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403 resultados encontrados para: TEMA: Parásitos
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1.
Tesis
A longuitudinal field study of the epidemiology of intestinal helminthoses in relation to the dieatry and therapeutic ingestion of chenopodium spp. among the maya of Chiapas state, México / Michael Mckinnon Kliks
Kliks, Michael Mckinnon (autor) ;
San Diego, California, United States : University of California , s.f.
Clasificación: CH/614.553 / K5
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
SFA000453 (Disponible)
Disponibles para prestamo: 1

2.
Artículo
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The oceanographic conditions of the Pacific Ocean are largely modified by El Niño (EN), affecting several ecological processes. Parasites and other marine organisms respond to environmental variation, but the influence of the EN cycle on the seasonal variation of parasitic copepods has not been yet evaluated. We analysed the relation between infection parameters (prevalence and mean intensity) of the widespread parasitic copepods Caligus bonito and Charopinopsis quaternia in the dolphinfish Coryphaena hippurus and oceanography during the strong 2015–16 EN. Fish were collected from capture fisheries on the Ecuadorian coast (Tropical Eastern Pacific) over a 2-year period. Variations of sea surface temperature (SST), salinity, chlorophyll a (Chl-a), Oceanic Niño Index (ONI), total host length (TL) and monthly infection parameters of both copepod species were analysed using time series and cross-correlations.

We used the generalised additive models for determine the relationship between environmental variables and infection parameters. The total body length of the ovigerous females and the length of the eggs of C. bonito were measured in both periods. Infection parameters of both C. bonito and Ch. quaternia showed seasonal and annual patterns associated with the variation of environmental variables examined (SST, salinity, Chl-a and ONI 1+2). Infection parameters of both copepod species were significantly correlated with ONI 1+2, SST, TL and Chl-a throughout the GAMLSS model, and the explained deviance contribution ranged from 16%-36%. Our results suggest than an anomaly higher than +0.5°C triggers a risen in infection parameters of both parasitic copepods. This risen could be related to increases in egg length, female numbers and the total length of the ovigerous females in EN period. This study provides the first evidence showing that tropical parasitic copepods are sensitive to the influence of EN event, especially from SST variations. The observed behaviour of parasitic copepods likely affects the host populations and structure of the marine ecosystem at different scales.


3.
Artículo
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This study was aimed at evaluating thein vitroeffect of the edible mushroom (EM) Pleurotus eryngiiagainst the eggs and larvae (L3) of Haemonchus contortus. The evaluation included acetone (AE) and hydroalcoholic (HA) extracts of the following strains: ECS-1138, ECS-1156, ECS-1255, ECS-1258, ECS-1261, ECS-1282, and ECS-1292. The HA extract of the ECS-1255 strain showed thehighest effect on mortality rates of L3 (18.83%) at 20 μg/mL. After subjecting this HA extract to a normal phase chromatography column, five fractions were obtained; fraction F5 (100% MeOH) was the most effective against eggs, with hatching inhibition percentages of 88.77 and 91.87% at 20 and 40 mg/mL, respectively. Gas chromatography-mass spectrometry (GC-MS) subjected this fraction to an acetylation reaction to determine the content of the secondary metabolites. The GC-MSanalysis showed that the F5 fraction was composed of trehalose CAS: 6138-23-4, polyols (L-iditol CAS: 488-45-9, galactitol CAS:608-66-2, D-mannitol CAS: 69-65-8, D-glucitol CAS: 50-70-4, and myoinositol CAS: 87-89-8), adipic acid CAS: 124-04-9, stearic acid CAS: 57-11-4, squalene CAS: 111-02-4, and β-sitosterol CAS: 83-46-5.


4.
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5.
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In vitro nematocidal activity of commercial fatty acids and β-sitosterol against Haemonchus contortus
Pineda Alegría, Jesús Antonio (autor) ; Sánchez, José E. (autor) ; González Cortázar, Manáses (autor) ; Von Son de Fernex, Elke (autora) ; González Garduño, Roberto (autor) ; Mendoza de Gives, Pedro (autor) ; Zamilpa, Alejandro (autor) ; Aguilar Marcelino, Liliana (autora) ;
Contenido en: Journal of Helminthology Vol. 94, e135 (2020), p. 1-4 ISSN: 1475-2697
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Haemonchus contortusis a haematophagous gastrointestinal nematode (GIN) that causes severe anaemia and even death in small ruminants, negatively impacting the economic viability of farms. Traditionally, this parasite has been controlled with chemical compounds; however, inadequate use of these types of products has favoured the emergence of anthelmintic resistance. Therefore, it is necessary to search for alternatives for GIN control. Previous studies have reported the anthelmintic activity of edible mushroom extracts against H. contortus. A recent study reported that a fraction constituted of different fatty acids and β-sitosterol isolated from the basidiomata of the edible mushroom Pleurotus djamor ECS-123 has ovicidal and larvicidal activity against H. contortus. Thus, this study aimed to assess the anthelmintic activity of the pure molecules: pentadecanoic acid, palmitic acid, β-sitosterol, stearic acid and linoleic acid. For this purpose, an egg-hatching inhibition test was carried out in which the compounds were evaluated individually and in combination at a final concentration of 20 mg mL−¹. Furthermore, larval mortality was assessed using a combination of the five commercial compounds previously mentioned at different concentrations (1.25–20 mg mL−¹). Palmitic acid and stearic acid, in some combinations, inhibited H. contortus egg hatching by 100%. On the other hand, in the larval mortality test, the combination of the five compounds showed dose-dependent behaviour, and 100% mortality was obtained 24 h post-incubation. Pure molecules and their combinations have anthelmintic-like activity against the eggs and larvae of H. contortus.


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7.
- Artículo con arbitraje
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A comparison of sexual competitiveness and demographic traits of Anastrepha obliqua (Macquart) (Diptera: Tephritidae) among fruit-associated populations
Hernández Ortiz, Emilio (autor) ; Ruiz Montoya, Lorena (autora) (1964-) ; Toledo, Jorge (autor) ; Montoya Gerardo, Pablo Jesús (autor) ; Montoya Gerardo, Pablo Jesús (autor) ; Liedo Fernández, Pablo (autor) ; Aceituno Medina, Marysol (autora) ; Perales Rivera, Hugo Rafael (autor) ;
Disponible en línea
Contenido en: Bulletin of Entomological Research Vol. 109, no. 3 (June 2019), p. 333-341 ISSN: 1475-2670
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The control of Anastrepha obliqua includes the sterilization of mass-reared insects grown in isolation in a constantly controlled environment. Through time, laboratory mass-reared colonies may produce flies with lower field performance. To recover the genetic variation and aptitude of mass-reared populations, wild insects are introduced into mass-reared colonies. Our aim in this study was to determine whether the host species from two localities influence the life history traits of A. obliqua. We collected flies as larvae from infested fruits of Spondias purpurea, S. mombin, Mangifera indica cv. 'piña', and M. indica cv. 'coche' from two localities in Chiapas, Mexico. There were significant differences in the mating competitiveness of males collected from mango cv. 'coche' compared with mass-reared males. There were no differences in the mating propensity between flies from the two localities, even in the number of matings, when weight was considered as a covariable. The mass-reared strain showed the earliest age at first oviposition. The locality affected the longevity and oviposition period, and these influenced the birth rate, intrinsic rate of increase, finite rate of population increase, mean generation time, and doubling time. According to the demographic parameters, the population of S. mombin would allow artificial colonization in less time, considering that it has a high reproduction rate starting at an early age. Even in the propensity test, it had the highest number of matings. However, males with greater sexual competitiveness and longevity for colonization corresponded to those collected from S. purpurea.


8.
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First description of the male and subgravid female of Philometra serranellicabrillae Janiszewska, 1949 (Nematoda: Philometridae), a gonad-infecting parasite of the comber Serranus cabrilla (Linnaeus) (Serranidae) off Tunisia
Ghanmi, Nessrine (autora) ; González Solís, David (autor) ; Gargouri, Lamia (autora) ;
Contenido en: Systematic Parasitology Vol. 96, no. 8 (2019), p. 673–679 ISSN: 0165-5752
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The male and subgravid female of Philometra serranellicabrillae Janiszewska, 1949 (Philometridae) collected from the gonads of Serranus cabrilla (Linnaeus) (Serranidae) off Tunisia are described for the first time based on light and scanning electron microscopical studies. The male of this nematode can be separated from other congeneric gonad-infecting nominal species in the structure and shape of the gubernaculum (e.g. absence of a dorsal protuberance and a median smooth field). The shape ofthe male posterior region is unique in that it bears apair of big circular papillae posterior to the cloacal opening, which is also present in other Philometra spp. from serranids, i.e. P. indica Moravec & Manoharan, 2014, P. inexpectata Moravec, Chaabane, Justine & Neifar, 2016 and P. jordanoi (López-Neyra, 1951) Yamaguti, 1961. Moreover, P. serranellicabrillae differs from its congeners in other fish families from the Mediterranean Sea, in the length of spicules and gubernaculum.


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Background: We assessed metrics of the metazoan parasite infracommunities of the dusky founder (Syacium papillosum) as indicators of aquatic environmental health of the Yucatan Shelf (YS) prior to oil extraction. We sampled the dusky founder and its parasites along the YS, mostly during the 2015 north wind season (November–April). Our aims were: (i) to determine whether the parasite infracommunity metrics of S. papillosum exhibit signifcant diferences among YS subregions; (ii) to determine whether the probability of the occurrence of its parasite species and individu‑ als were afected by environmental variables, nutrients, heavy metals and hydrocarbons at the seascape level; and (iii) to determine whether there were statistical diferences between the parasite infracommunity metrics of S. papillosum from YS and those of Syacium gunteri from the Campeche Sound. Multivariate statistical analyses and generalised additive models (GAMs) were used to examine the potential statistical associations between the contaminants, environmental variables and parasite community metrics, and the maximum entropy algorithm (MaxEnt) was used to characterise the habitat’s suitability for the parasite’s probability of occurrence. Results: We recovered 48 metazoan parasite species from 127 S. papillosum, with larval cestodes and digeneans being the most numerically-dominant. Multivariate analyses showed signifcant diferences in parasite infracommu‑ nity metrics among Western YS, Mid YS and Caribbean subregions, with the latter being the richest in species but not in individuals. The GAM and MaxEnt results indicated a negative efect of top predators (e.g. sharks and rays) removal on parasite metrics. The parasite infracommunities of S. papillosum were twice as rich in the number of species and individuals as those reported for S. gunteri from the Campeche Sound.

Conclusions: The significant differences among subregions in parasite metrics were apparently due to the interruption of the Yucatan current during the north wind season. The fishing of top predators in combination with an influx of nutrients and hydrocarbons in low concentrations coincides with an increase in larval cestodes and digeneans in S. papillosum. The dusky founder inhabits a region (YS) with a larger number of metazoan parasite species compared with those available for S. gunteri in the Campeche Sound, suggesting better environmental conditions for transmis‑ sion in the YS.


10.
Artículo
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The parasitic nematode Metaparasitylenchus hypothenemi interferes with the endoparasitoid Phymastichus coffea, in the biological control of the coffee berry borer
Castillo Vera, Alfredo (autor) ; Infante, Francisco (autor) ;
Contenido en: Biocontrol Science and Technology Vol. 29, no. 4 (2019), p. 388-392 ISSN: 1360-0478
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We studied the interaction of Metaparasitylenchus hypothenemi with the exotic parasitoid Phymastichus coffea, when both natural enemies, co-ocurred inside the coffee berry borer adult. The nematode affects larvae and pupae ofP. coffea, reducing by ten times the parasitoid’s adult progeny. We concluded that the negative effect caused by M. hypothenemi on the survival and development of juvenile stages of P. coffea could affect the action of this parasitoid as a natural enemy of this pest.


11.
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Parasitic nematodes in Snappers (Perciformes: Lutjanidae) from the Southern Gulf of Mexico and Mexican Caribbean
Hernández Olascoaga, Arturo (autor) ; González Solís, David (autor) ;
Contenido en: Journal of Parasitology Volumen 105, número 5 (October 2019), páginas 697-703 ISSN: 0022-3395
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Snappers from the southern Gulf of Mexico (SGM) and Mexican Caribbean (CAR) were examined for parasitic nematodes to determine their richness, composition, and infection parameters (prevalence and mean intensity). From February 2016 to March 2018, 431 individuals of 8 snapper species were collected in 6 localities. In all, these fishes were parasitized by 2,275 individual nematodes belonging to 13 taxa: Terranova sp. was found in 7 of 8 host species and showed the highest prevalence (23%), while the rest had lower values (<10%). Lutjanus griseus (Linnaeus) harbored the highest species richness (10 species), followed by Lutjanus apodus (Walbaum) (8 species). Most localities were similar in terms of species richness but differed in the specific composition. Eight nematode taxa represent new host records for the family Lutjanidae (Gill), thus increasing to 22 the nematode taxa in the SGM and CAR. There is a potential risk to public health due to the presence of nematodes with zoonotic potential (as Anisakis sp.) and the habit in the region of eating raw fish (cebiche).


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Here, we present the results of a taxonomic survey of the nematodes parasitizing fishes from the lagoon flats of Palmyra Atoll, Eastern Indo-Pacific. We performed quantitative parasitological surveys of 653 individual fish from each of the 44 species using the intertidal sand flats that border the atoll’s lagoon. We provide morphological descriptions, prevalence, and mean intensities of the recovered seven species of adult nematode (Pulchrascaris chiloscyllii, Capillariidae gen. sp., Cucullanus bourdini, Cucullanus oceaniensis, Pseudascarophis sp., Spinitectus (Paraspinitectus) palmyraensis sp. nov., Philometra pellucida) and three larval stages (Pulchrascaris sp., Hysterothylacium sp., Cucullanus sp.). We recorded: Pulchrascaris chiloscyllii from Carcharhinus melanopterus; Capillariidae gen. sp. from Chaetodon lunula, Lutjanus fulvus, and Ellochelon vaigiensis; Cucullanus bourdini from Arothron hispidus; Cucullanus oceaniensis from Abudefduf sordidus; Pseudascarophis sp. from Chaetodon auriga, Chaetodon lunula, and Mulloidichthys flavolineatus; Spinitectus (Paraspinitectus) palmyraensis sp. nov. from Albula glossodonta; Philometra pellucida from Arothron hispidus; and three larval forms, Pulchrascaris sp. from Acanthurus triostegus, Acanthurus xanthopterus, Rhinecanthus aculeatus, Platybelone argalus, Carangoides ferdau, Carangoides orthogrammus, Caranx ignobilis, Caranx melampygus, Caranx papuensis, Chaetodon auriga, Chanos chanos, Amblygobius phalaena, Asterropteryx semipunctata, Valencienea sexguttata,

Kyphosus cinerascens, Lutjanus fulvus, Lutjanus monostigma, Ellochelon vaigiensis, Mulloidichthys flavolineatus, Upeneus taeniopterus, Gymnothorax pictus, Abudefduf septemfasciatus, Abudefduf sordidus, and Stegastes nigricans; Hysterothylacium sp. type MD from Acanthurus triostegus, Carangoides ferdau, Chaetodon lunula, Chanos chanos, Kyphosus cinerascens, Abudefduf sordidus, and Arothron hispidus; and Cucullanus sp. from Caranx ignobilis. Spinitectus (Paraspinitectus) palmyraensis sp. nov. (Cystidicolidae) is described from the intestine of roundjaw bonefish Albula glossodonta. All the nematode species reported in this study represent new geographical records. We discuss how our survey findings compare to other areas of the Indo-Pacific, and the way the relatively numerical dominance of trophically transmitted larval stages likely reflect the intact food web of Palmyra Atoll, which includes a large biomass of large-bodied top predator sharks and ray-finned fishes.


13.
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Redescription of three species of nematodes (Nematoda) parasitising fishes in the USA, with a key to the species of Dichelyne Jägerskiöld, 1902 parasitic in freshwater and brackish-water fishes of North America
Moravec, František (autor) ; de Buron, Isaure (autora) ; González Solís, David (autor) ;
Contenido en: Systematic Parasitology Vol. 96, no. 1 (January 2019), p. 79-94 ISSN: 0165-5752
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Resumen en: Inglés |
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Three species of parasitic nematodes are redescribed based on light and scanning electron microscopical (SEM) examinations of newly collected specimens in fishes of South Carolina, USA: Dichelyne (Cucullanellus) bullocki Stromberg & Crites, 1972 from Fundulus heteroclitus (Linnaeus) (Fundulidae); Dichelyne (Dichelyne) diplocaecum Chandler, 1935 from Ictalurus furcatus (Valenciennes) (Ictaluridae); and Hysterothylacium pelagicum Deardorff & Overstreet, 1982 from Coryphaena hippurus Linnaeus (Coryphaenidae). For the first time, intraspecific variations in the number of intestinal caeca were observed in D. bullocki, as well as previously unknown males and gravid females of D. diplocaecum are described; this enabled to synonymise D. mexicanus Caspeta-Mandujano, Moravec & Salgado-Maldonado, 1999 with D. diplocaecum. Unlike most congeneric species, H. pelagicum has no double postanal papillae, as confirmed by SEM. A key to the species of Dichelyne Jägerskiöld, 1902 parasitic in freshwater and brackish-water fishes in North America is provided.


14.
Tesis - Doctorado
Ecología y estructura genética de la interacción de Arsenura armida (Cramer 1779) (Lepidoptera: Saturniidae) con sus plantas huésped / Mayra Carolina Molina Nery
Molina Nery, Mayra Carolina ; Ruiz Montoya, Lorena (directora) (1964-) ; Castro Ramírez, Adriana Elena (asesora) (1961-2019) ; Caballero Roque, Adriana (asesora) ; González Díaz, Alfonso Ángel (asesor) ;
San Cristóbal de Las Casas, Chiapas, México : El Colegio de la Frontera Sur , 2018
Clasificación: TE/595.78097275 / M6
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010019412 (Disponible)
Disponibles para prestamo: 1
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Índice | Resumen en: Español |
Resumen en español

Arsenura armida pertenece al orden Lepidoptera, es un insecto fitófago y se encuentra distribuido desde el Centro de México hasta América del Sur. Sus plantas hospederas son 15 especies pertenecientes a dos familias. La distribución y abundancia de las poblaciones de A. armida son altamente dependientes de la disponibilidad de sus hospederos, por lo que, los cambios genéticos y bioquímicos en ellas pueden llegar a tener impacto en la presencia, abundancia, contenido nutrimental (humedad, cenizas, proteínas, grasas, carbohidratos, kcalorías, kjoules y relación C/N) y en la diversidad genética del insecto. Este estudio se guió con las siguientes preguntas: ¿Arsenura armida responde ecológica y genéticamente, así como en contenido nutrimental de manera diferente según las plantas hospederas?, ¿Se relacionan los niveles de diversidad genética de las plantas hospederas con los de A. armida? Que derivaron en los objetivos siguientes: 1) determinar la presencia y abundancia de A. armida en función de la identidad y abundancia de plantas hospederas, 2) relacionar la concentración de los metabolitos secundarios y el contenido nutrimental de los árboles hospederos con el contenido nutrimental de A. armida, y 3) determinar si la estructura genética de las plantas hospederas se correlaciona con la del insecto. El área de estudio se ubicó en los municipios de Chiapas: Ocozocoautla, en la Reserva de la Biosfera Selva El Ocote, Simojovel y Huitiupán. Se registraron diversos datos para A. armida: 1) presencia y abundancia por planta hospedera, 2) análisis del contenido nutrimental, y 3) diversidad genética. De las plantas hospederas: 1) abundancia, distribución y DAP (diámetro a la altura del pecho), 2) análisis fitoquímico y nutrimental, y 3) diversidad genética. Se reportan dos nuevas especies hospederas de A. armida: Heliocarpus americanus y Rollinia mucosa.

A nivel ecológico se encontraron indicios de preferencia de A. armida por las especies hospederas R. mucosa y Heliocarpus appendiculatus, ya que presentaron mayor porcentaje de ocupación de larvas; se observó que el manejo agropecuario de las especies hospederas no afecta la abundancia y presencia de A. armida, aunque se debe considerar que en los árboles con DAP> 20 cm se observó mayor presencia. A nivel nutrimental, A. armida mostró diferencias entre localidades y especies hospederas en humedad y cenizas respectivamente. La especie R. mucosa y la localidad La Pimienta contribuyeron a la nutrición de las larvas. Las especies hospederas sí presentaron diferencias significativas en contenido nutrimental y de metabolitos secundarios; A. armida ocupó árboles con mayor contenido nutrimental y energético, y se observó correlación negativa de las saponinas sobre algunas variables nutrimentales del insecto. Con respecto a la estructura genética del insecto, las especies hospedaras asociadas a las localidades explicaron el 1.92 % de la variación genética de las larvas; las poblaciones del insecto más diferenciadas se encontraron en H. donnell-smithii y R. mucosa; y la mayor diversidad genética en ésta última. La relación entre la diversidad genética del insecto y de sus hospederos no fue significativa. Se concluye que A. armida tiene poblaciones diferenciadas genéticamente en relación con sus hospederos, lo cual pude estar contribuyendo a un proceso de adaptación local.

Índice

Resumen
Capítulo I. Efecto del manejo agropecuario sobre la distribución y abundancia local de Arsenura armida (Cramer 1779) (Lepidoptera: Saturniidae) en Chiapas, México
Resumen
Introducción
Materiales y Métodos
Resultados
Discusión
Agradecimientos
Literatura citada
Capítulo II. Relación del contenido nutrimental de Arsenura armida (Lepidoptera: Saturniidae) con la composición fitoquímica de sus árboles hospederos en Chiapas, México
Resumen
Introducción
Método
Resultados
Discusión
Agradecimientos
Literatura citada
Capítulo III. Ausencia de pareo entre la diversidad genética de Arsenura armida (Lepidoptera: Saturniidae) y la de sus plantas hospederas
Resumen
Introducción
Método
Resultados
Discusión
Literatura citada


15.
Artículo
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Endoparasites of Crotalus tzabcan (Serpentes: Viperidae), with a checklist in rattlesnakes
Carbajal Márquez, Rubén Alonso (autor) ; González Solís, David (autor) ; Cedeño-Vázquez, J.R. (autor) ;
Contenido en: Journal of Parasitic Diseases Vol. 42, no. 2 (June 2018), p. 303–314 ISSN: 0971-7196
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Resumen en: Inglés |
Resumen en inglés

The helminth and pentastomid fauna of 50 specimens of Crotalus tzabcan from the Yucatán Peninsula, Mexico is documented. The examination revealed the presence of three nematode species (Hastospiculum onchocercum, Hexametra boddaertii, and Travassosascaris araujoi), and one pentastomid (Porocephalus crotali). The threee nematode species had the same prevalence (2%), while the pentastomid had a higher prevalence (8%). The pentastomid P. crotali was the most abundant and intense parasite, although it was only found in four snake hosts. Crotalus tzabcan acts as definitive host for the adult helminths and pentastomids, with rodents as the probable intermediate hosts. This work represents the first systematic survey on the parasitic helminth and pentastomid fauna of C. tzabcan, and includes four new geographical records. Additionally, a checklist of helminths and pentastomids reported for Crotalus and Sistrurus is provided. To date, a total of 32 helminth and 7 pentastomid species have been recorded as parasites of rattlesnakes. Nematoda possessed the highest species richness. The genera with the highest number of host species were Mesocestoides and Hexametra, followed by Kalicephalus. The rattlesnake species with the highest number of reported parasites was C. durissus (18 nematodes and 2 pentastomids).


16.
- Artículo con arbitraje
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First record of the bathypelagic chaetognath Heterokrohnia involucrum Dawson, 1968 in the Gulf of California and its association with a parasitic nematode
González Solís, David ; Gasca, Rebeca (coaut.) ;
Contenido en: Thalassas: An International Journal of Marine Sciences Vol. 34, no. 1 (April 2018), p. 227–232 ISSN: 0212-5919
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Resumen en: Inglés |
Resumen en inglés

During a plankton survey of shallow and deep waters in the Gulf of California carried out with the aid of an unmanned submersible by the Monterey Bay Aquarium Research Institute (MBARI), a specimen of the deep-living epibenthic chaetognath Heterokrohnia involucrum Dawson, 1968 was collected at a depth of 2670 m in the Alarcon Mount region. This species was originally described from the Arctic Ocean and it is now recorded for the first time in Mexican waters, thus representing a new geographical record and expanding its geographical range. The chaetognath was parasitized in the coelom with a larval stage of the nematode Hysterothylacium sp. that is probably assignable to H. aduncum (Rudolphi, 1802) and frequently found in zooplankton organisms, which act as intermediate hosts. There are no previous records of nematodes parasitizing deep-living chaetognaths, so this finding also represents a new host record.


17.
Artículo - Nota científica con arbitraje
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Jatropha curcas L., una nueva planta hospedera de Lycomorpha pholus (Drury) en el sureste de Chiapas, México
López Guillén, Guillermo (autor) ; Hernández Baz, Fernando (autor) ; Gómez Ruiz, Jaime (autor) ; Barrera, Juan F. (autor) ;
Disponible en línea
Contenido en: Southwestern Entomologist Vol. 43, no. 4 (Dec. 2018), p. 1051-1054 ISSN: 0147-1724
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Resumen en español

La polilla negra y amarilla de líquenes, Lycomorpha pholus (Drury), pertenece a la familia Erebidae, la cual en estado de larva se alimenta típicamente de líquenes, sin reportarse hasta ahora hábitos fitófagos. En este trabajo se reporta por primera vez a larvas de L. pholus alimentándose de hojas y frutos de Jatropha curcas L. (Euphorbiaceae).

Resumen en inglés

The black and yellow lichen moth, Lycomorpha pholus (Drury), it belongs to the family Erebidae that in a larval stage typically eats lichens, without previously reporting phytophagous habits. In this work, larvae of L. pholus feeding on leaves and fruits of Jatropha curcas L. (Euphorbiaceae) are reported for the first time.


18.
- Artículo de divulgación
*En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
Manglares entre el mar y la tierra prometida
Cunill Flores, José María ; Nettel Hernanz, Alejandro (coaut.) ; Tovilla Hernández, Cristian (coaut.) ;
Contenido en: ECOfronteras Vol. 22, no. 63 (mayo/agosto 2018), p. 22-25 ISSN: 2007-4549
Cerrar
SIBE Campeche
39591-50 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
39591-40 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
39591-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
39591-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
39591-60 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
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Resumen en: Español |
Resumen en español

Los manglares son ecosistemas costeros de “naturaleza protectora”: constituyen una barrera ante oleaje y vientos, lo que es vital en tormentas tropicales o huracanes, son refugio de una gran biodiversidad, regulan inundaciones y ofrecen muchos otros servicios ambientales. Pero los bosques de mangle se están perdiendo a causa de actividades humanas, ¿qué hacer?


19.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal
New ecological and taxonomic remarks on Sabinella troglodytes and Nanobalcis worsfoldi (Gastropoda: Eulimidae) living on the slate-pencil sea urchin from the Mexican Caribbean region
González Vallejo, Norma Emilia ; León González, Jesús Ángel de (coaut.) ;
Contenido en: Revista Mexicana de Biodiversidad Vol. 89, no. 1 (marzo 2018), p. 123-133 ISSN: 1870-3453
Nota: En hemeroteca, SIBE-San Cristóbal
PDF
Resumen en: Español | Inglés |
Resumen en español

Eulimidae es una de las familias más diversificadas entre los gasterópodos marinos parásitos. Por lo general, se reportan asociados con equinodermos, pero para la mayoría de las especies descritas, el huésped es desconocido y pocos aspectos biológicos de la simbiosis son conocidos. Como parte de un estudio más amplio sobre eulímidos, se recogieron 300 erizos de mar en lagunas arrecifales de aguas poco profundas, algunos se mantuvieron vivos en el laboratorio durante una semana y fueron fotografiados y filmados bajo el microscopio estereoscópico. Nanobalcis worsfoldi vive alrededor y en la base de las espinas primarias del erizo de mar Eucidaris tribuloides y es muy abundante, mientras que Sabinella troglodytes, vive adherido dentro de una agalla que construye en las espinas primarias y es poco común. Se incluye una caracterización completa de los datos de conchas y morfología para ambos eulímidos. La comparación de nuestros especímenes con material tipo y no-tipo, reveló varias características notables. Encontramos la vuelta principal del cuerpo más alta y más anchas, variación en la posición de las cicatrices de crecimiento y el número total de vueltas. Sugerimos que existe un complejo de especies para Sabinella troglodytes. Los patrones de pigmentación del manto, el modo de adherirse, desplazamiento en vivo y otras observaciones ecológicas en el huésped se presentan por primera vez para ambas especies del mar Caribe mexicano.

Resumen en inglés

Eulimidae is one of the most diversified families among marine parasitic gastropods. They are usually reported associated with echinoderms, but for most described species the host is unknown, and few biological aspects of the symbiosis are known. As part of a larger study on eulimids, 300 sea urchins were collected in shallow water reef lagoons. Some were kept alive in the laboratory for 1 week and photographed and filmed under stereomicroscopes. Nanobalcis worsfoldi lives around and at the base of primary spines of the sea urchin Eucidaris tribuloides and is very abundant, whereas Sabinella troglodytes lives attached inside a gall that it builds from primary spines, and is uncommon. A complete characterization of the shells and morphology data for both eulimids are included. The comparison of our specimens with type and non-type material indicates several noteworthy features. We found higher and wider whorls, variation in position of growth scars and total number of whorls. We suggest that there is a species complex for Sabinella troglodytes. Mantle pigmentation patterns, mode of attachment, live displacement, and other ecological observations on the host are presented for the first time for both species from the Mexican Caribbean Sea.


20.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Oviposition preference and larval performance and behavior of Trichoplusia ni (Lepidoptera: Noctuidae) on host and nonhost plants
García Coapio, Guadalupe (autora) ; Cruz López, Leopoldo Caridad (autor) ; Guerenstein, Pablo G. (autor) ; Malo Rivera, Edi Álvaro (autor) ; Rojas, Julio C. (autor) ;
Contenido en: Arthropod-Plant Interactions Vol. 12, no. 2 (April 2018), p. 267–276 ISSN: 1872-8855
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

We investigated the female oviposition preference and larval performance and behavior of Trichoplusia ni (Hubner) on cabbage, tomato, soybean (host plants), and wormseed (nonhost plant) in laboratory experiments. In addition, we investigated the role of trichomes in the oviposition of females. Females oviposited more often on cabbage than on tomato, soybean, or wormseed plants. Tomato was the second most preferred plant, followed by soybean and wormseed. Neonate larvae gained more weight on cabbage and tomato than on soybean or wormseed, while second-instar larvae grew better on cabbage than on tomato, soybean, or wormseed. The least growth of neonate larvae occurred on wormseed plants. The orientation of neonate and second-instar larvae to cabbage, tomato, soybean, and wormseed did not differ significantly. Neonate larvae settled equally on leaf discs of cabbage, tomato, soybean, and wormseed, while most second-instar larvae settled on leaf discs of cabbage in comparison with the other plants after 24 h of release. The foliar area consumed by neonate larvae was quite similar among plants, but second-instar larvae consumed more cabbage than tomato, soybean, or wormseed. Comparing different types of leaves, females oviposited more often on mature than young leaves of tomato, soybean, and wormseed. In contrast, females did not show any preference for ovipositing on young or mature leaves of cabbage. In general, we found that the density or length of nonglandular and glandular trichomes of tomato, soybean, and wormseed plants negatively affected oviposition of T. ni females.


21.
- Artículo con arbitraje
Philometra barbata n. sp. (Nematoda: Philometridae) from the red mullet Mullus barbatus (Perciformes, Mullidae) off Tunisia
Ghanmi, Nessrine ; González Solís, David (coaut.) ; Gargouri, Lamia (coaut.) ;
Contenido en: Acta Parasitologica Vol. 63, no. 4 (octubre 2018), p. 766–771 ISSN: 1230-2821
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Resumen en: Inglés |
Resumen en inglés

Helminthological examinations of the red mullet Mullus barbatus (Linnaeus) (Mullidae) from the Gulf of Hammamet, off Tunisia, revealed the presence of one undescribed gonad-infecting nematode species, Philometra barbata n. sp. (Philometridae). The new species as other congeneric species is mainly characterized by the shape of the caudal mound, the distribution of the caudal papillae and the shape of the gubernaculum with the presence of a dorsal protuberance consisting of two dorsolateral lamellar parts separated from each other by a smooth median field in the male. The new species differs from its gonadinfecting congeners in the body length of male, the length of spicules and gubernaculum. This is the second nominal species of Philometra reported from fishes of the family Mullidae and the 14th from the Mediterranean Sea.


22.
- Capítulo de libro con arbitraje
PDF
Resumen en: Inglés |
Resumen en inglés

Gastrointestinal parasitic nematodes cause important economic harm to animal health, seriously affecting the livestock industry. Worldwide, economic losses from nematodiasis is reported at more than USD 10 billion a year in anthelmintic treatments alone in 2013. In Mexico, the livestock industry has reported losses of about $8.902 million Mexican pesos in the zootechnical potential of ruminants that interfere in the profitability of livestock farms. So far, these diseases have been controlled by use of anthelmintic products (AH). In addition, improper use of AH contributes to the imbalance of the environment, as well as an ecotoxicological risk to soil, plants, aquifers and beneficial organisms. In this context, the search for alternative and sustainable complementary methods that reduce the need for use of synthetic products of chemical origin, for example natural derivatives of edible fungi with a nematicidal effect, is evident. The edible fungi Pleurotus spp. possesses nutraceutical and therapeutic properties including their use as anti-parasitic. In the present investigation, in vitro effects of compounds derived from Pleurotus spp. were assessed against various stages of the parasitic nematode Haemonchus contortus. Pleurotus ostreatus had higher nematicidal activity than P. eryngii. The "F" fraction of hydroalcoholic extract of P. ostreatus mycelium showed the highest nematicidal activity (25.29%) with respect to other fractions.

FpMeOH and FMeOH fractions had the highest L4 mortality rate of 84.8 and 100, respectively at 24 and 72 h. The spent mushroom substrates (SMS) of P. djamor had biological activity against H. contortus in its egg stages and L3. Furthermore, such activity is possibly influenced by the composition and/or the type of substrate. EHA-SA11 was lethal against L3 exsheathed with a 45% mortality at 20 mg/ml at 72 h postexposure, but did not affect nematode eggs. In contrast, EHA-SA13 was the most effective against parasite eggs with 100% inhibition starting at 2.5 mg/ml that was determined at CL90= 625 μg/ml. The use of a "nutraceutical" food based on SMS of edible mushroom culture represents a potential method of prevention of nematode infections.


23.
Tesis - Maestría
Preferencia de oviposición de hembras de Trichoplusia ni y desarrollo larval en tres variedades de jitomate / María Guadalupe Meneses Arias
Meneses Arias, María Guadalupe (autora) ; Rojas, Julio C. (director) ; Solís Montero, Lislie (asesora) ; Malo Rivera, Edi Álvaro (asesora) ;
Tapachula, Chiapas, México : El Colegio de la Frontera Sur , 2018
Disponible en línea
Clasificación: TE/595.78 / M4
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
ECO020013720 (Disponible)
Disponibles para prestamo: 1
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Índice | Resumen en: Español |
Resumen en español

El proceso de domesticación puede modificar algunos rasgos de las plantas, incluyendo sus defensas químicas y físicas contra los insectos herbívoros. En este estudio, se investigó si las hembras de la palomilla generalista Trichoplusia ni Hübner son capaces de discriminar entre tres tipos de plantas de tomate, Solanum lycopersicum L., con diferente grado de domesticación y si su elección afecta el desempeño de su progenie. Además, se identificaron los compuestos volátiles, se registró la densidad de tricomas glandulares y la concentración de proteínas totales, fenoles totales, polifenol oxidasa e inhibidores de proteinasas en los tres tipos de tomate. Las hembras de T. ni no mostraron preferencia por plantas de tomates silvestres, locales y comerciales. Sin embargo, ovipositaron más a menudo en la superficie adaxial de las plantas comerciales y en la superficie abaxial de las plantas silvestres. La preferencia de las hembras por la superficie adaxial de las plantas comerciales, posiblemente se deba a que este tipo de plantas tenía una menor densidad de tricomas glandulares en comparación con las silvestres. El perfil de los compuestos volátiles fue cuantitativamente diferente entre los tres tipos de plantas de tomate. Larvas neonatas tuvieron una mayor mortalidad cuando se alimentaron de plantas silvestres y de variedades locales que cuando se alimentaron de plantas comerciales. Las plantas locales y silvestres aumentaron la concentración de inhibidores de proteinasas cuando fueron dañadas por las larvas de T. ni. Los resultados obtenidos sugieren que la mayor mortalidad de larvas de T. ni ocurrió cuando éstas se alimentaron de variedades locales y silvestres, lo cual pueda estar correlacionada con que dichas plantas tengan una mayor densidad de tricomas glandulares y una mayor concentración de inhibidores de proteinasas que las plantas comerciales.

Índice

Resumen y palabras clave
I. Introducción
II. Tomato domestication affects larval survival but not female preference of the generalist moth Trichoplusia ni (Lepidoptera: Noctuidae) (artículo enviado)
III. Conclusiones
IV. Literatura citada


24.
Tesis - Doctorado
Relación entre caracteres de historia de vida y competitividad sexual de Anastrepha obliqua seleccionados durante la cría masiva / Emilio Hernández Ortiz
Hernández Ortiz, Emilio ; Ruiz Montoya, Lorena (directora) (1964-) ; Liedo Fernández, Pablo (asesor) ; Toledo, Jorge (asesor) ; Montoya Gerardo, Pablo Jesús (asesor) ; Perales Rivera, Hugo Rafael (asesor) ;
San Cristóbal de Las Casas, Chiapas, México : El Colegio de la Frontera Sur , 2018
Clasificación: TE/632.774097275 / H4
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010019573 (Disponible)
Disponibles para prestamo: 1

25.
Tesis - Doctorado
Revisión y aspectos ecológicos de la familia Eulimidae Philippi 1853 (Gasteropoda) de las costas del Pacífico oriental tropical y el Atlántico mexicano / Norma Emilia González Vallejo
González Vallejo, Norma Emilia (autora) ; León González, Jesús Ángel de (director) ; García Garza, María Elena (secretaria) ; Rodríguez Almaraz, Gabino Adrián (vocal) ;
San Nicolás de los Garza, Nuevo León, México : Universidad Autónoma de Nuevo León. Facultad de Ciencias Biológicas. Subdirección de estudios de Posgrado , 2018
Clasificación: TE/594.301209726 / G6
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008731 (Disponible)
Disponibles para prestamo: 1
PDF
Índice | Resumen en: Español | Inglés |
Resumen en español

Los caracoles agrupados en la familia Eulimidae Philippi, 1853 son en su mayoría ectoparásitos de casi todos los grupos de equinodermos (crinoideos, erizos, estrellas, ofiuros y pepinos de mar); pocas especies son endoparásitos, completando su desarrollo en el interior del hospedero. La lista preliminar en molluscabase.org incluye unas 1,000 especies de eulimidos comprendidas en 105 géneros válidos. Las conchas en su mayoría son blancas o transparentes y lisas, se consideran micro moluscos porque su longitud es menos de 5 mm. El dimorfismo sexual ha sido confirmado en algunos géneros, con machos enanos que son 1- 7 veces menores que las hembras. En México los estudios sobre taxonomía de eulimidos se restringen a listas de especies, algunas se refieren a estudios de aspectos ecológicos de las asociaciones simbióticas. El objetivo del presente trabajo fue revisar los eulimidos presentes a lo largo de las costas mexicanas, estandarizar las diagnosis de los géneros mejor definidos, para la elaboración de una clave, preparar un catálogo de las especies y estudiar algunos aspectos ecológicos de relaciones simbióticas con erizos y pepinos de mar en el Caribe mexicano. Se visitaron 13 museos nacionales y del extranjero para revisar materiales tipo y no tipo. Para la recolecta de ejemplares vivos, se visitaron las siguientes playas en el Pacífico, Pichilingue, y La Paz, BCS, Los Pinitos, Mazatlán, Sinaloa y La Tijera y San Rafaelito, Oaxaca, en el Golfo de México Isla Verde, playa del acuario Veracruz; Lerma, Campeche; En el Caribe mexicano Isla Mujeres, Cozumel, Majahual y Xahuayxol, QR, adicionalmente se revisaron colecciones con organismos preservados en alcohol. La revisión taxonómica de la familia Eulimidae, resultó en un catálogo que inlcuye 14 géneros y 45 especies, se describen tres nuevas especies.

Las descripciones y redescripciones en algunos casos, fueron por comparación con los 25 holotipos, 6 sintipos y 5 paratipos, depositados en los distintos museos, que sirvió para elaborar una lista sistemática y una clave dicotómica para los géneros presentes de ambas costas mexicanas. De los estudios sobre aspectos ecológicos, se reporta la relación de Melanella eburnea y el pepino de mar Actinopyga agassizii por primera vez para el Caribe mexicano. La especie Melanella conoidea, está asociado a tres especies de pepinos de mar H. floridana, H. grisea, y H. glaberrima, en algunos solo está adherido por la probóscis a un tubo pedal, en otros está inmerso en la piel de su huésped. Se reporta por primera vez la simbiosis del ectoparásito Vitreolina cf. colini sobre el ofiuro Ophiothrix suensonii en Cozumel, QR. Monogamus minibulla y Monogamus sp. son ectoparásitos del erizo rojo Echinometra lucunter, ambos despliegan estrategias distintas de adhesión al huésped y un patrón de color del manto variable, número de larvas y movimiento de las mismas diferentes, la concha no sirvió para separar las especies y un análisis molecular podría confirmar sus diferencias ecológicas. Sabinella troglodytes y Nanobalcis worsfoldi son ectoparásitos del erizo espinas de lápiz Eucidaris tribuloides, el primero modifica la espina formando una agalla para vivir en el interior, y el otro es un comensal de la base de las espinas. La taxonomía y la amplia distribución de S. troglodytes es analizada y discutida. De acuerdo con este estudio, la taxonomía y la ecología presentan un panorama aún incompleto, el interés a nivel internacional para resolver la taxonomía de la familia está en curso, nuevas publicaciones e información relacionada con la taxonomía y preferencias de asociaciones ecológicas están siendo generadas, estos estudios podrían ayudar mejorar el conocimiento del grupo.

Resumen en inglés

The snails grouped in the family Eulimidae Philippi, 1853 are mostly ectoparasites of almost all groups of echinoderms (crinoids, sea urchins, stars, ophiurids and sea cucumbers); few species are endoparasites, completing their whole development inside their host. The preliminary list on molluscabase.org includes some 1,000 eulimid species comprised in 105 valid genera. Shells are mostly white or transparent, and smooth, they are regarded as micro mollusks because their length is less than 5 mm. Sexual dimorphism has been confirmed for some genera, with dwarf males being 1-7 times smaller than females. In Mexico studies on the taxonomy of eulimids are restricted to a few lists of species, some publications refer to studies of ecological aspects of their symbiotic associations. The objective of this work was to review the eulimids present along Mexican coasts, to standardize the diagnoses of the best defined genera, for the elaboration of a key, to prepare a catalog of the species, and to study some ecological aspects of symbiotic relationships with sea urchins and holoturians from the Mexican Caribbean. Thirteen national or foreing museums were visited to review type and non-type materials. For the collection of live specimens, the following beaches were visited in the Pacific, Pichilingue, La Paz, BCS, Los Pinitos, Mazatlan, Sinaloa and La Tijera and San Rafaelito, Oaxaca, in Gulf of Mexico; Verde Island, Veracruz aquarium; Lerma, Campeche. For the Mexican Caribbean Isla Mujeres, Majahual and Xahuayxol, QR, additionally some collections with organisms preserved in alcohol were reviewed. The taxonomic revision of the Eulimidae family resulted in a catalog that includes 14 genera and 45 species, 3 new species are reported.

The descriptions and redescriptions in some cases, were by comparison with the 25 holotypes, 6 syntypes and 5 paratypes, deposited in the different museums, which served to develop a systematic list and a dichotomous key for genera present in Mexican coasts. From studies on ecological aspects, the relationship of Melanella eburnea and the holothuriancucumber Actinopyga agassizii is reported for the first time in the Mexican Caribbean. The species Melanella conoidea, is associated with three species of holothurians (H. floridana, H. grisea, and H. glaberrima), in some it is only attached by the proboscis to a pedal tube, in others it is immersed in the skin of its host. The symbiosis of the ectoparasite Vitreolina cf colini is reported for the first time on the brittle starfish Ophiothrix suensonii in Cozumel. Monogamus minibulla and Monogamus sp. are ectoparasites of the red sea urchin Echinometra lucunter, both deploy different strategies for attachching themselves to the host, and a variable mantle color pattern, number of larvae and movement of the same, the shell did not serve to separate the species, a molecular analysis could confirm their ecological differences. Sabinella troglodytes and Nanobalcis worsfoldi are ectoparasites of the spiny pencil sea urchin Eucidaris tribuloides, the former modifies the spine by forming a gall to live inside it, and the other is a commensal of the base of the spines. The taxonomy and wide distribution of S. troglodytes is analyzed and discussed. According to this study, the taxonomic and ecological panorama are still incomplete, the interest at the international level to improve the taxonomy of the family is ongoing, new publications and information related to taxonomy and ecological association preferences are being generated, these studies will improve the knowledge of the group.

Índice

Índice de Figuras
Resumen
Abstract
Introducción
Justificación
Hipótesis
Objetivos
6.1 Objetivo General
6.2 Objetivos Particulares
Antecedentes
7.1 Taxonomía
7.2 Morfología
Área De Estudio
Material Y Métodos
Resultados
10.1 Taxonomía. Lista sistemática
10.2 Clave para la identificación a género
10.3 Catálogo de las especies (POT
10.4 Catálogo de las especies (GMyC)
10.5 Aspectos ecológicos
10.5.1. Pepinos de mar
10.5.2 Simbiosis Melanella eburnea y Actinopyga agassizii
10.5.3 Melanella conoidea (Kurtz y Stimpson)
10.5.4 Simbiosis de Vitreolina cf. colini y el ofiuro Ophiothrix suensonii
10.5.5 Monogamus minibulla ectoparásito de Echinometra lucunter
10.5.6 Monogamus sp.
10.5.7 Simbiosis de Sabinella troglodytes
10.5.8 Simbiosis de Nanobalcis worsfoldi
Discusión
Conclusiones
Bibliografía
Resumen Biográfico
Anexo I
Anexo II


26.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Two new gonad-infecting species of Philometra Costa, 1845 (Nematoda: Philometridae) from Trachinus spp. (Osteichthyes: Trachinidae) in the Gulf of Hammamet, Tunisia
Ghanmi, Nessrine ; González Solís, David (coaut.) ; Gargouri, Lamia (coaut.) ;
Contenido en: Systematic Parasitology Vol. 95, no. 2-3 (March 2018), p. 223–234 ISSN: 0165-5752
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Based on light and scanning electron microscopical studies, two new gonad-infecting species of Philometra Costa, 1845, P. draco n. sp. and P. radiata n. sp. (Nematoda: Philometridae), are described from the marine perciform fishes Trachinus draco (Linnaeus) and T. radiatus (Linnaeus) (both Trachinidae), respectively, in the Gulf of Hammamet, off the northeastern coast of Tunisia. Philometra draco n. sp. and P. radiata n. sp. can be separated from other gonad-infecting species of this genus by the structures associated to the gubernaculum (e.g. dorsal protuberance, smooth field separating the dorsolateral longitudinal parts), as well as by the length of the body, spicules and gubernaculum. Philometra radiata n. sp. can be distinguished from P. draco n. sp. in having the dorsal side of the gubernaculum distal end provided with a median longitudinal smooth field demarcated by two dorsolateral lamellate parts. These two new species are the first philometrid species described from fishes of the family Trachinidae.


27.
- Artículo con arbitraje
PDF
Resumen en: Inglés |
Resumen en inglés

A new genus and species of nematode, Tziminema unachi n. gen., n. sp. is described from the caecum and colon of Baird ’ s tapir Tapirus bairdii (Gill, 1865), found dead in the Reserva de la Biósfera El Triunfo, Chiapas State, in the Neotropical realm of Mexico. Tziminema n. gen. differs from the other nine genera included in the Strongylinae by two main characteristics: having 7 – 9 posteriorly directed tooth-like structures at the anterior end of the buccal capsule, and the external surface of the buccal capsule being heavily striated. Phylogenetic analyses of the DNA sequences of the mitochondrial cytochrome c oxidase and nuclear DNA, including a partial sequence of the internal transcribed spacer 1, 5.8S and a partial sequence of the internal transcribed spacer 2 of the new taxon, confirmed its inclusion in Strongylinae and its rank as a new genus.


28.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Complementary description of Ergasilus arthrosis Roberts, 1969 (Copepoda: Poecilostomatoida: Ergasilidae), a new parasite of cichlid teleosts in southeast Mexico
Jiménez García, María Isabel ; Suárez Morales, Eduardo (coaut.) ;
Contenido en: Systematic Parasitology Vol. 94, no. 1 (January 2017), p. 81–90 ISBN:1573-5192
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

During a parasitological survey of the ichthyofauna of Lake Catemaco, a freshwater system in the Mexican State of Veracruz, the widespread copepod Ergasilus arthrosis Roberts, 1969 was recovered from two cichlid teleosts, Mayaheros urophthalmus (Günther) and Oreochromis sp. This is the first confirmed record of this copepod species outside of the United States and from Mexico; its finding as a parasite of cichlids represents an expansion of the known host range for this copepod. The local prevalence and intensity of infection of E. arthrosis was highest in M. urophthalmus. The infection prevalence of E. arthrosis on M. urophthalmus (60%) was higher than that known for other ergasilids on cichlids. Ergasilus arthrosis can be distinguished from its closest congener E. lizae Krøyer, 1863 by the morphometry of the antennary segments, the ventral ornamentation of the thoracic sclerites and by details of the antennulary setation, but also by its habitat and host preferences. Taxonomic illustrations and morphological details of the specimens examined are also provided together with comments on the variability of this species.


29.
- Artículo con arbitraje
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The effect of agricultural management on the distribution and abundance of arsenura armida (Lepidoptera: Saturniidae) in Chiapas, Mexico
Molina Nery, Mayra Carolina (autor) ; Ruiz Montoya, Lorena (coaut.) (1964-) ; Castro Ramírez, Adriana Elena (coaut.) (1961-2019) ; González Díaz, Alfonso Ángel (coaut.) ; Caballero Roque, Adriana (coaut.) ;
Contenido en: The Journal of the Lepidopterists' Society Vol. 71, no. 4 (November 2017), p. 236-248 ISSN: 0024-0966
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Resumen en: Inglés |
Resumen en inglés

Arsenura armida plays an important ecological role in the development of woods and forests throughout Latin America. It is also consumed in several rural communities of Mexico. At present, there is no information on the host preferences of this species of moth, habitat type or the effects of human consumption on population numbers. This paper determines the effect of agricultural management on the distribution, occupation and abundance of larvae of A. armida in order to promote strategies for its sustainable exploitation. Six observation plots, each with an area of 4 km², were established in three localities of the state of Chiapas, Mexico. Three plots were subject to agricultural management (La Pimienta, La Ilusion and La Loma) and three without management (Carrizal, Huachinadero and Mirador). All host plants together with their diameter at breast height (DBH) were quantified. In order to estimate host preference, occupation, distribution and abundance, the number of larvae per tree were recorded over two consecutive years (between March and October). The occupation and abundance of A. armida varied among plots and the six tree species observed. Both variables presented a relationship with the mean DBH of the host species. A preference for the host species Heliocarpus appendiculatus and Rollinia mucosa was observed. The greatest abundance of larvae and host occupation was found in plots subject to agricultural management during the first year. Abundance decreased during the second year due to tree mortality. The insect presented a clustered distribution that depended on the distribution and development of host trees (highest DBH). It is suggested that host management is considered for the control of populations of A. armida in agricultural areas and its sustainable exploitation for human consumption.


30.
- Artículo con arbitraje
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Resumen en: Español | Inglés |
Resumen en español

Antecedentes. En el manatí del Caribe (Trichechus manatus) se reporta baja diversidad de helmintos y la mayoría de los estudios se han realizado en la subespecie de Florida (T. m. latirostris ) en ambientes subtropicales, por lo que existe poca información para la subespecie Antillana (T. m. manatus). En México, al parecer existen dos unidades poblacionales de manatí Antillano. Objetivos. El objetivo de este estudio fue determinar la presencia y prevalencia de huevos de helmintos parásitos en heces de T. m. manatus del Golfo de México (GM) y la costa del Caribe Mexicano (CAR). Métodos. Se utilizaron muestras de heces de 31 manatíes, tanto de GM (n = 22) como del CAR (n = 9), de 2005 a 2008. Las heces se fijaron y preservaron en alcohol etílico al 70% hasta su análisis. Las técnicas utilizadas fueron de flotación y sedimentación. Los huevos de helmintos se identificaron apoyándose en literatura especializada y catálogos gráficos. Resultados. En el 61.2% de las heces analizadas se encontraron parásitos, todas las muestras de CAR contenían parásitos. Se registraron huevos de cinco especies de helmintos: tres digéneos (Chiorchis fabaceus, C. groschafti y Pulmonicola cochleotrema ) y dos nemátodos (Heterocheilus tunicatus y Ascarididae gen. sp.). Dos especies fueron exclusivas para GM, una para CAR y dos fueron comunes para ambas áreas. Conclusiones. La diversidad fue consistentemente baja en las muestras. Cuatro especies fueron comunes con Florida y las islas del Caribe y una es nuevo registro para este hospedero. Futuros estudios parasitológicos en cadáveres frescos confirmarán la existencia de helmintos adultos para los nuevos registros en este hospedero.

Resumen en inglés

Background. Low helminth diversity has been reported in West Indian manatees (Trichechus manatus ). Most studies were conducted on the Florida sub species T. m. latirostris in subtropical environments, therefore limited information is available for the tropical Antillean subspecies T. m. manatus. In Mexico, there are apparently two population units of T. m. manatus. Goals. The objective of this study was to survey the presence and prevalence of helminth parasite eggs in the feces of T. m. manatus from the Gulf of Mexico (GM) and Caribbean coasts (CAR) of Mexico. Methods. We used 31 fecal samples collected from GM (n = 22) and CAR (n = 9), from 2005 to 2008. Feces were fixed and preserved in 70% ethanol until analysis. Both floatation and sedimentation techniques were used. Helminth eggs were identified using specialized literature and graphic catalogs. Results. We found parasite eggs in 61.2% of feces; all samples from CAR had helminths. We documented eggs from five helminths: three digenetic (Chiorchis fabaceus, C. groschafti, and Pulmonicola cochleotrema) and two Nematoda (Heterocheilus tunicatus and Ascarididae gen. sp.). Two species were found exclusively from GM, one exclusively from CAR, and two species were common to both locales. Conclusions. Diversity was consistently low in the samples. Four of the species found are common to Florida and Caribbean islands and one is a new registry for this host. Future examination of manatee carcasses could confirm the presence of adult helminth species for new registries for this host.


31.
Tesis - Maestría
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Para los insectos, el proceso de búsqueda de una planta hospedera es crucial para asegurar su supervivencia y la de su progenie, ya que la planta es empleada como sitio de refugio, de reproducción o alimentación. En un estudio previo se reportó que ambos sexos de Anastrepha obliqua (Macquart) fueron más atraídos a frutos maduros y sazones de carambola del cultivar “Maha” que a los del cultivar “Golden Star”. El objetivo del presente estudio fue identificar los compuestos volátiles que mediatizan la atracción de A. obliqua entre ambos cultivares de carambola. Los volátiles emitidos por los frutos fueron capturados con adsorbente Super Q, y los extractos fueron evaluados en jaulas de campo. Los extractos fueron analizados por cromatografía de gases acoplada a electroantenografía (CG-EAD). Los compuestos que fueron antenalmente activos se identificaron por cromatografía de gases acoplada a espectrometría de masas (GC-MS). En los extractos de ambos cultivares se encontraron cinco compuestos antenalmente activos, los cuales fueron identificados como butirato de etilo, hexanoato de etilo, (E)-β-ocimeno, un isómero del perilleno y octanoato de etilo. Con los compuestos identificados se preparó una mezcla utilizando 3 de los compuestos en la concentración natural en que fueron encontrados en cada cultivar y fue evaluada en jaulas de campo, encontrándose que no existen diferencias entre los extractos y las mezclas preparadas de cada cultivar, y que la mezcla de Maha capturó mayor cantidad de moscas que la mezcla de Golden Star. En este estudio se demostró que A. obliqua puede discriminar olfativamente entre cultivares usando la concentración de los volátiles del hospedero.

Índice

Resumen y palabras clave
I. Introducción
II. Anastrepha obliqua usa la concentración específica de compuestos ubicuos para la discriminación olfativa de dos cultivares de carambola (artículo enviado)
III. Conclusiones
IV. Literatura citada


32.
- Artículo con arbitraje
Orientatractis brycini sp. nov. (Nematoda: Atractidae) from characiform freshwater fishes in Gabon, Africa
González Solís, David ; Mariaux, Jean (coaut.) ;
Contenido en: Revue suisse de Zoologie Vol. 124, no. 1 (March 2017), p. 1-8 ISSN: 0035-418X
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Resumen en inglés

The nematode Orientatractis brycini sp. nov. (Atractidae) is described from the intestine of Brycinus macrolepidotus Valenciennes (Alestidae) and Xenocharax spilurus Günther (Distichodontidae) collected in two localities from Gabon, Africa. The new species is characterized by the presence of four submedian lips with well-sclerotized pieces armed with two recurved pointed spines and one median large spine on their distal part, along with two smaller spines posterior to amphidial pores. It differs from its congeners mainly in the length of both spicules, gubernaculum, presence of two lateral spines posterior to amphids, distribution and number of caudal papillae. An emended generic diagnosis is provided. This is the eighth species in the genus Orientatractis, the fourth from fish hosts and the first from Africa, which expands its geographical distribution.


33.
Tesis - Doctorado
El papel de la olfacción en la selección del hospedante por Trichoplusia ni (Hübner) / Guadalupe García Coapio
García Coapio, Guadalupe ; Rojas, Julio C. (director) ; Malo Rivera, Edi Álvaro (asesor) ; Cruz López, Leopoldo Caridad (asesor) ; Guerenstein, Pablo G. (asesor) ;
Tapachula, Chiapas, México : El Colegio de la Frontera Sur , 2017
Clasificación: TE/595.78 / G3
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
ECO020013588 (Disponible)
Disponibles para prestamo: 1
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Resumen en español

El comportamiento de selección de plantas hospedantes por hembras de insectos holometábolos es crucial para la supervivencia de su progenie. La olfacción es el sentido más importante durante el proceso de búsqueda de hospedantes, pero al parecer los insectos generalistas están más limitados neuronalmente que los insectos especialistas para procesar los compuestos provenientes de sus plantas hospedantes. En esta tesis se investigó algunos aspectos del comportamiento de búsqueda de plantas hospedantes por Trichoplusia ni (Hübner), una especie de palomilla generalista. Particularmente, se estudió si la preferencia de las hembras durante la oviposición se correlaciona con el mejor desempeño larval. Adicionalmente, se investigó si las hembras fueron capaces de discriminar plantas de diferente calidad. Finalmente, se identificaron los compuestos volátiles involucrados en el comportamiento de búsqueda de hospedantes de T. ni. Los resultados mostraron que existe una concordancia parcial entre la oviposición de las hembras y el desempeño larval de T. ni; las hembras prefirieron ovipositar en repollo y su progenie tuvo una mayor ganancia de peso en esta planta y en tomate, con diferencias significativas en la ganancia de peso a la soya, y epazote. Las hembras prefirieron ovipositar en hojas maduras de tomate, soya, y epazote, las cuales tienen menos tricomas que las hojas jóvenes. Se encontró que en cada planta hay un número diferente de compuestos que son activos antenalmente. Una evaluación comportamental de una mezcla de cinco compuestos identificados en los extractos de soya mostró que, de 30 hembras grávidas evaluadas, 85% levantaron vuelo y 73% aterrizaron en el cebo. Los resultados sugieren que las hembras usan los volátiles de las plantas para discriminar entre plantas de diferente calidad.

Índice

Resumen
Capítulo I.
1.1. Olfacción en lepidópteros
1.2. Búsqueda de hospedantes
1.3. Relación preferencia de oviposición y desempeño larval
1.4. Defensa de la planta
1.5. Modelo de estudio
1.6. Biología e Importancia económica de Trichoplusia ni
1.7. Búsqueda de hospedante por hembras de T. ni
Literatura citada
Capítulo II.
Oviposition preference and larval behavior and performance of Trichoplusia ni (Lepidoptera: Noctuidae) on host and non-host plants
Capítulo III.
Herbivore Damage and Prior Egg Deposition on Host Plants Influence the Oviposition of the Generalist Moth Trichoplusia ni (Lepidoptera: Noctuidae)
Capítulo IV.
Respuestas electrofisiológica y comportamental de hembras de Trichoplusia ni a volátiles de plantas hospedantes y no hospedantes
Capítulo V.
Conclusiones
Literatura citada


34.
Artículo
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Skin parasitism by Paratrichosoma recurvum in wild American crocodiles and its relation to environmental and biological factors
Charruau, Pierre Alexandre Rémy Robert (autor) ; Pérez Flores, Jonathan Sechaly (autor) ; Labarre, Didier (autor) ;
Contenido en: Vol. 122, no. 3 (January 2017), p. 205-211 ISSN: 0177-5103
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Resumen en: Inglés |
Resumen en inglés

Paratrichosma spp. are capillarid worms that parasitize the abdominal skin of crocodiles. They are likely not a threat to crocodiles' health, but they affect the skins' commercial value. No successful treatment exists against this parasite, and present knowledge of its life cycle is limited. Herein we report new information on Paratrichosoma recurvum occurrence in wild American crocodiles Crocodylus acutus from Mexican Caribbean islands and its relation to environmental (water salinity, temperature, climatic events) and biological (body condition) factors. The percentage of parasitized crocodiles (30.3%) is among the highest recorded in wild crocodilian populations. Small (<40.8 cm total length [TL]) and large (>270 cm TL) crocodiles are less parasitized, probably due to the characteristics of their skin or of the parasite life cycle. Two individuals appeared to have eliminated worms naturally between their capture and recapture. The thorax-abdomen is the most parasitized area of the body of crocodiles. The risk of infection is not associated with the sex of the crocodile, but there was a difference in the proportion of parasitized crocodiles between sites, which could be related to different environmental conditions. The body condition of a crocodile does not seem to be affected by the parasite. Climatic events and water temperature show no effect on the parasitism of crocodiles, but salinity could have an effect. The infection of crocodiles by P. recurvum could depend more on an individual's behavior than on environmental conditions.


35.
Artículo
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Resumen en inglés

Background Rural communities in the Amazonian southern border of Ecuador have benefited from governmental social programmes over the past 9 years, which have addressed, among other things, diseases associated with poverty, such as soil transmitted helminth infections. The aim of this study was to explore the prevalence of geohelminth infection and several factors associated with it in these communities. Methods This was a cross sectional study in two indigenous communities of the Amazonian southern border of Ecuador. The data were analysed at both the household and individual levels. Results At the individual level, the prevalence of geohelminth infection reached 46.9% (95% CI 39.5% to 54.2%), with no differences in terms of gender, age, temporary migration movements or previous chemoprophylaxis. In 72.9% of households, one or more members were infected. Receiving subsidies and overcrowding were associated with the presence of helminths. Conclusions The prevalence of geohelminth infection was high. Our study suggests that it is necessary to conduct studies focusing on communities, and not simply on captive groups, such as schoolchildren, with the object of proposing more suitable and effective strategies to control this problem.


36.
- Artículo con arbitraje
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Spinitectus aguapeiensis n. sp. (Nematoda: Cystidicolidae) from Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) in the River Aguapeí, Upper Paraná River Basin, Brazil
Acosta, Aline Angelina ; González Solís, David (coaut.) ; Da Silva, Reinaldo José (coaut.) ;
Contenido en: Systematic Parasitology Vol. 94, no. 6 (July 2017), p. 649–656 ISSN: 1573-5192
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Resumen en: Inglés |
Resumen en inglés

Nematodes belonging to Spinitectus Fourment, 1883 (Nematoda: Cystidicolidae) were found in the intestine of Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) from the Aguapeí River, Brazil. They represent a new species, Spinitectus aguapeiensis n. sp., which differs morphologically from its congeners in the body length, the number of spinose rings, the location of the excretory pore, the number of precloacal papillae and the length of the spicules. The new species is the first South American species within the genus with a remarkably spirally coiled posterior extremity in males and the largest spicules. It is also the second species with the highest number of precloacal papillae and has unique shape of the small spicule. Spinitectus aguapeiensis n. sp. is the first helminth species found in P. avanhandavae, the fourth species of this genus recorded in the River Paraná Basin and the sixth species of Spinitectus in South America.


37.
Artículo
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Using duddingtonia flagrans in calves under an organic milk farm production system in the Mexican tropics
Ortiz Pérez, Diego Otoniel (coaut.) ; Sánchez Muñoz, José Bernardo (coaut.) ; Nahed Toral, José (coaut.) ; Orantes Zebadúa, Miguel Ángel (coaut.) ; Cruz López, José Luis (coaut.) ; Reyes García, María Eréndira (coaut.) ; Mendoza de Gives, Pedro (coaut.) ;
Contenido en: Experimental Parasitology Vol. 175, (April 2017), p. 74–78 ISSN: 0014-4894
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Resumen en: Inglés |
Resumen en inglés

The reduction of the gastrointestinal nematode (GIN) larvae population in faeces of cattle treated with Duddingtonia flagrans chlamydospores on a farm under an organic production system in Chiapas, Mexico, was assessed. Seventeen Cebu/Swiss crossbreed grazing calves naturally infected with GIN, were randomly distributed into two groups and treated as follows: Group 1, an oral administration of 2 × 10 6 D. flagrans chlamydospores/kg BW, every two days for 30 days; group 2, Control, without any treatment. Results indicated that the epg values in both groups remained similar (p > 0.05). The average number of (L3) from coprocultures from the group treated with D. flagrans had an important reduction (53.8%) with respect to the control group and it reached 75.3% maximum larval reduction at the 14th sampling; although, no statistic significance was observed (p > 0.05). Likewise, the average of larvae (L3) recovered from grass corresponding to the animals treated with D. flagrans diminished at 25.1% with respect to the control group (p > 0.05). A mixture of GIN genera including Strongyloides sp., Haemonchus sp., Cooperia sp., Trichostrongylus sp., Oesophagostomum sp. and Mecistocirrus sp., were identified from coprocultures. It was concluded that treatment with D. flagrans chlamydospores reduces the GIN larvae population in grass and in faeces of calves maintained under an organic milk production system.


38.
- Artículo con arbitraje
Evaluation of the pathogenicity of isolates of beauveria bassiana against rhyssomatus nigerrimus
Mejía Ortiz, Sergio Alberto ; Gómez Ruiz, Jaime (coaut.) ; López Guillén, Guillermo (coaut.) ; Cruz López, Leopoldo Caridad (coaut.) ; Valle Mora, Javier Francisco (coaut.) ;
Contenido en: Southwestern Entomologist Vol. 41, no. 1 (Mar. 2016), p. 41-50 ISSN: 2162-2647
Resumen en español

El picudo de la soya, Rhyssomatus nigerrimus Fahraeus, es una plaga que daña seriamente el estado vegetativo y reproductivo de cultivos de soya en México. Actualmente, el picudo se controla por medio de insecticidas convencionales, por lo que resulta necesario generar medidas de control eficaces y sustentables que reduzcan el impacto negativo de esta nueva plaga. El hongo, Beauveria bassiana (Balsamo) Vuillemin, ha mostrado un gran potencial de manejo para algunas especies de insectos plaga del orden Coleoptera. El objetivo de este trabajo fue evaluar la virulencia de ocho cepas del hongo B. bassiana contra el picudo de la soya, R. nigerrimus, en condiciones de laboratorio. Los resultados muestran que B. bassiana es un agente potencial microbiano para incorporar en un programa de control dirigido contra R. nigerrimus. Todas las cepas B. bassiana redujeron la sobrevivencia de los adultos del picudo con respecto al control. Las cepas más agresivas fueron Bb-Hy, Bb-Rhy, Bb-13, con CL50 de 1.07 x 107, 1.55 x 107, y 1.31 x 10¹º conidios por mL de suspensión, respectivamente. Las medias del tiempo letal (TL50) tuvieron valores entre 7.5 y 14.5 días. Se discuten las implicaciones de los resultados obtenidos con las cepas evaluadas.

Resumen en inglés

The soybean weevil, Rhyssomatus nigerrimus Fahraeus, seriously damages vegetative and reproductive stages of soybean, Glycine max (L.) Merr., in Mexico. The weevil is currently controlled with conventional insecticide, and it is necessary to generate effective, sustainable control measures to reduce the negative impact of this new pest. The fungus Beauveria bassiana (Balsamo) Vuillemin has shown potential for management of some coleopteran pest species. The objective of this study was to assess the virulence of eight strains of B. bassiana against R. nigerrimus under laboratory conditions. Results showed that B. bassiana is a microbial agent that can potentially be incorporated into a program to control R. nigerrimus. All of the B. bassiana strains reduced survival of adult weevils, relative to the check. The most aggressive strains were Bb-Hy, Bb-Rhy, and Bb-13, with LC50 of 1.07 x 107, 1.55 x 107, and 1.31 x 10¹º conidia per milliliter of suspension, respectively. Lethal time means (LT50) were between 7.5 and 14.5 days. We discuss implications of the results obtained with the evaluated strains.


39.
- Artículo con arbitraje
External injuries of Morelet’s crocodile Crocodylus moreletii in Campeche, Mexico
Padilla Paz, Sergio Eduardo ; Weber, Manuel (coaut.) ;
Contenido en: Diseases of Aquatic Organisms Vol. 120, no. 2 (July 2016), p. 151–158 ISSN: 1616-1580
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Resumen en inglés

Analysis of external injuries in captive and free-ranging Morelet's crocodiles Crocodylus moreletii was performed in the northern wetlands of Campeche, Mexico. From March to September of 2007, a total of 52 free-ranging and 51 captive Morelet's crocodiles were studied. Captive crocodiles presented significantly more injuries. Sixteen free-ranging crocodiles presented some type of lesion, mostly superficial abrasions. Nineteen captive crocodiles presented lesions, mostly incisions from agonistic interactions. Overall, the injuries with highest prevalence were the incisions. The tail was the most frequently injured body region. Injuries were more common in adults than in other size classes. Conversely, the presence of lesions caused by the parasite Paratrichosoma spp. was greater in crocodiles captured in the coastal channels (mangrove habitat). The information presented here is important to understand some of the effects of individual interactions and to foresee and manage the consequences of conservation and management activities of crocodile populations.


40.
- Artículo con arbitraje
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From the worm in a bottle of Mezcal: iDNA confirmation of a leech parasitizing the Antillean manatee
Pérez Flores, Jonathan Sechaly ; Rueda Calderon, H. (coaut.) ; Kvist, S. (coaut.) ; Siddall, M.E. (coaut.) ; Oceguera Figueroa, Alejandro (coaut.) ;
Contenido en: Journal of Parasitology Vol. 102, no. 5 (Oct. 2016), p. 553-555 ISSN: 1937-2345
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Resumen en: Inglés |
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Invertebrate-derived ingested DNA (iDNA) is quickly proving to be a valuable, non-invasive tool for monitoring vertebrate species of conservation concern. Using the DNA barcoding locus, we successfully identified both the blood-feeding leech Haementeria acuecueyetzin and its blood meal-the latter is shown to be derived from the Caribbean manatee, Trichechus manatus . DNA amplification was successful despite the fact that the specimen was fixed in Mezcal (a beverage distilled from agave). We report the first confirmed case of a leech feeding on a manatee, the first record of H. acuecueyetzin for the State of Chiapas and, to our knowledge, the first case of successful DNA amplification of a biological sample fixed in Mezcal other than the caterpillar "worms" more commonly found in that beverage.


41.
- Tesis
Helmintos parásitos del pez león, Pterois volitans, en la Reserva de la Biosfera Banco Chinchorro y Xcalak, Quintana Roo, México / Gloria Eliane Gil Gutiérrez
Gil Gutiérrez, Gloria Eliane ; González Solís, David (director) ;
Chetumal, Quintana Roo, México : Secretaría de Educación Pública. Instituto Tecnológico de Chetumal , 2016
Clasificación: TE/597.68097267 / G5
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008603 (Disponible)
Disponibles para prestamo: 1
Índice

I. Dedicatoria
II. Agradecimientos
III. índice
IV. Índice de tablas y figuras
V. Resumen
Introducción
Antecedentes
Diagnosis del pez león
Descripción
Alimentación
Hábitat y distribución
Reproducción
Especie invasora
Justificación
Objetivos
Materiales y Métodos
Resultados
Discusión
Conclusiones
Recomendaciones
Bibliografía
Anexos


42.
- Tesis
Helmintos parásitos en tres especies de peces de la sabana Payo Obispo, Chetumal, Quintana Roo / Judith Acosta Carrillo
Acosta Carrillo, Judith ; González Solís, David (director) ;
Chetumal, Quintana Roo, México : Secretaría de Educación Pública. Instituto Tecnológico de Chetumal , 2016
Clasificación: TE/597.74097267 / A3
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008605 (Disponible)
Disponibles para prestamo: 1

43.
- Artículo con arbitraje
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Herbivore damage and prior egg deposition on host plants influence the oviposition of the generalist moth trichoplusia ni (Lepidoptera: Noctuidae)
García Coapio, Guadalupe (coaut.) ; Cruz López, Leopoldo Caridad (coaut.) ; Guerenstein, Pablo G. (coaut.) ; Malo Rivera, Edi Álvaro (coaut.) ; Rojas, Julio C. (coaut.) ;
Contenido en: Journal of Economic Entomology Vol. 109, no. 6 (September 2016), p. 2364–2372 ISSN: 1938-291X
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Resumen en: Inglés |
Resumen en inglés

Female insects have the difficult task of locating host plants that maximize the survival and success of their offspring. In this study, the oviposition preferences of the cabbage looper moth, Trichoplusia ni (Hubner), for soybean plants, Glycine max (L.), under various treatments—undamaged, mechanically damaged, damaged by T. ni or Spodoptera frugiperda (Smith) larvae or by Bemisia tabaci (Gennadius) adults, egg-free plants, and plants previously oviposited by conspecific or heterospecific females (S. frugiperda )—were investigated using two-choice tests. Additionally, the volatile compounds emitted by the plants under the different treatments were identified by gas chromatography–mass spectrometry. Our results showed that females showed no preferences for undamaged or mechanically damaged plants. However, they oviposited more often on undamaged plants than on those previously damaged by T. ni, S. frugiperda ,or B. tabaci. In contrast, females preferred to oviposit on plants previously oviposited by conspecific and heterospecific females than on egg-free plants. Plants damaged by conspecific or heterospecific larvae emitted methyl salicylate, indole, and octyl butyrate, compounds not released by undamaged or mechanically damaged plants. Whitefly damage induced the release of higher quantities of Z(3)-hexenyl acetate, (R)-(+)-limonene, and (E)-β-ocimene compared to plants damaged by larvae and suppressed the emission of linalool. Egg deposition by conspecific and heterospecific moths induced the emission of (R)-(+)-limonene, octyl butyrate, and geranyl acetone but suppressed the release of linalool. This study showed that a generalist moth species can discriminate between plants of different quality, and suggests that females use volatile compounds as cues during this process.


44.
- Artículo con arbitraje
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Infestation of Raoiella indica hirst (Trombidiformes: Tenuipalpidae) on host plants of high socio-economic importance for tropical America
Otero Colina, Gabriel (coaut.) ; González Gómez, Rebeca (coaut.) ; Martínez Bolaños, L. (coaut.) ; Otero Prevost, L. G. (coaut.) ; López Buenfil, J. A. (coaut.) ; Escobedo Graciamedrano, R. M. (coaut.) ;
Contenido en: Neotropical Entomology Vol. 45, no. 3 (June 2016), p. 300–309 ISSN: 1678-8052
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Resumen en: Inglés |
Resumen en inglés

The mite Raoiella indica Hirst was recently introduced into America, where it has shown amazing ability to disseminate and broaden its range of hosts. An experiment was conducted in Cancún, Mexico, to determine infestation levels of this mite on plants recorded as hosts: coconut palm (Cocos nucifera) of cultivars Pacific Tall and Malayan Dwarf, oil palm (Elaeis guineensis) hybrids Deli x Ghana and Deli x Nigeria, Dwarf Giant banana (Musa acuminata, AAA subgroup Cavendish), Horn plantain (M. acuminata x Musa balbisiana, AAB subgroup Plantain), lobster claw (Heliconia bihai), and red ginger (Alpinia purpurata). Nursery plants of these host species or cultivars were artificially infested with R. indica in February 2011. In the four replications of 10 plants, each plant was infested with 200 R. indica specimens, and the numbers of infesting mites were recorded for 6 months. A maximum of 18,000 specimens per plant were observed on coconut Pacific Tall and Malayan Dwarf, followed by lobster claw, with a maximum of 1000 specimens per plant. Infestations were minimal for the remaining plants. Mite numbers on all plants declined naturally during the rainy season. All plant materials sustained overlapping mite generations, indicating that they are true hosts. Complementarily, infestation level was determined in backyard bananas and plantains. Correlations of infestation with plant height, distance from coconuts, and exposure to direct sunlight were estimated. Both bananas and plantains were infested by R. indica even when situated far from infested coconut palms. A Spearman correlation was found between infestation and plant height, although it was significant only for Silk plantain.


45.
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Large scale patterns of abundance and distribution of parasites in Mexican bumblebees
Gallot Lavallée, Marie ; Schmid Hempel, Regula (coaut.) ; Vandame, Rémy (coaut.) ; Vergar, Carlos H. (coaut.) ; Schmid Hempel, Paul (coaut.) ;
Contenido en: Journal of Invertebrate Pathology Vol. 133 (January 2016), p. 73–82 ISSN: 0022-2011
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Bumblebees are highly valued for their pollination services in natural ecosystems as well as for agricultural crops. These precious pollinators are known to be declining worldwide, and one major factor contributing to this decline are infections by parasites. Knowledge about parasites in wild bumblebee populations is thus of paramount importance for conservation purposes. We here report the geographical distribution of Crithidia and Nosema, two common parasites of bumblebees, in a yet poorly investigated country: Mexico. Based on sequence divergence of the Cytochrome b and Glycosomal glyceraldehyde phosphate deshydrogenase (gGPDAH) genes, we discovered the presence of a new Crithidia species, which is mainly distributed in the southern half of the country. It is placed by Bayesian inference as a sister species to C. bombi. We suggest the name Crithidia mexicana for this newly discovered organism. A population of C. expoeki was encountered concentrated on the flanks of the dormant volcanic mountain, Iztaccihuatl, and microsatellite data showed evidence of a bottleneck in this population. This study is the first to provide a large-scale insight into the health status of endemic bumblebees in Mexico, based on a large sample size (n = 3,285 bees examined) over a variety of host species and habitats.


46.
Libro
Life in the dark: illuminating biodiversity in the shadowy haunts of planet earth / Danté Fenolio
Fenolio, Danté Bruce ;
Baltimore, Maryland : Johns Hopkins University Press , 2016
Clasificación: 578.779 / F4
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008522 (Disponible)
Disponibles para prestamo: 1
Resumen en: Inglés |
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Deep inside caves, at the bottoms of oceans and lakes, beneath the ground: these concealed habitats are absent of sunlight. This strange and fascinating world of complete darkness is not a solitary place―it is inhabited by millions of life forms. Yet most humans―creatures of daylight―have never seen any of them. Until now. In this fascinating―sometimes eerie―book, extreme wildlife photographer and scientist Danté Fenolio brings the denizens of these shadowy haunts into focus. Life in the Dark shows us the many ways in which life forms have adapted to lightless environments, including refinements of senses, evolution of unique body parts, and illumination using "biological flashlights." With more than 200 mesmerizing color photographs, Life in the Dark unveils bizarre creatures like the firefly squid, the giant Amazonian catfish, the Chinese cavefish, and even the human bot fly, which lives in the darkness beneath its host’s skin. Fenolio’s rich and vibrant images shed new light on the world’s fascinating creatures of darkness.


47.
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Mealybugs (Hemiptera: Pseudococcidae) associated with rambutan (Nephelium lappaceum L.) in Chiapas, Mexico
Villatoro Moreno, Hernán (coaut.) ; Cisneros Hernández, Juan (coaut.) ; Gómez Ruiz, Jaime (coaut.) ; Infante, Francisco (coaut.) ; Castillo Vera, Alfredo (coaut.) ;
Contenido en: Journal of the Kansas Entomological Society Vol. 89, no. 4 (October 2016), p. 289-296 ISSN: 0022-8567
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Rambutan is an important cash crop in the Mexican State of Chiapas. In the last few years this crop has been expanded to other agricultural areas of Mexico, and mealybugs (Hemiptera: Pseudococcidae) represent a potential phytosanitary risk for this crop. The present study was performed with the objectives to identify the mealybug species associated with rambutan, and determine their altitudinal distribution in the Soconusco region of Chiapas. A total of six orchards were sampled for mealybugs, two at each altitudinal level: the low zone, i.e., 60–70 meters above sea level (masl); middle zone, 240–315 masl; and high zone, 475–590 masl. In each orchard, we randomly selected 28 trees that were sampled for fruits infested with mealybugs three times between May and August of 2015. Results showed that the abundance of immature stages and adults was higher in orchards located at the low zone. A total of 1236 adult female mealybugs were identified, namely, Ferrisia virgata (Cockerell) (57%), Dysmicoccus brevipes (Cockerell) (24.9%), Maconellicoccus hirsutus (Green) (15.7%) and Nipaecoccus nipae (Maskell) (2.4%). The latter three species have not been previously recorded in association with rambutan trees in Mexico. All species were infesting rambutan fruits in orchards located at the medium zone, being F. virgata the dominant species. The mealybug M. hirsutus was not detected in high altitude orchard, and N. nipae was not present in low altitude orchards. In contrast, F. virgata and D. brevipes were detected in all three altitudes, being more abundant in the low zone. Mealybug species and its altitudinal distribution reported here are a preliminary assessment of these insects in rambutan orchards, and it is expected to be used as a background for further studies.


48.
- Artículo con arbitraje
More than protein? Bee–flower interactions and effects of disturbance regimes revealed by rare pollen in bee nests
Villanueva Gutiérrez, Rogel ; Roubik, David Ward (coaut.) (1951-) ;
Contenido en: Arthropod-Plant Interactions Vol. 10, no. 1 (February 2016), p. 9-20 ISSN: 1872-8847
Resumen en: Inglés |
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Bees and their host flower populations were studied by identifying pollen to species or genus, from trap nests where bees were reared. Rare plant species in bee diets, and disturbance regimes, have not previously been researched and are emphasized here. Two focal bee groups with one species each (Megachilidae and Apidae) were studied in a 500,000-ha tropical reserve in the Yucatán Peninsula nine complete years. The number of rare or major pollen species in nests had no statistical correlation; thus, rare pollen analysis complements study of major brood provisions. We found most nests (87 % Megachile zaptlana, 93 % Centris analis) contained rare pollen; only 12 % of the 438 nests contained major pollen alone. Rare pollen sometimes indicated an energy source rather than a scarce protein resource. Trichome nectar |of Cydista, along with Ipomoea and Caesalpinia, were nectar sources. Malpighiaceae, despite lacking nectar, often provided the complete Centris diet. Considering rare pollen, only Centris responded to drought, or competition from immigrant honeybees. Neither bee responded to hurricanes. Drought years coincided with low bee populations; Centris nests contained more rare species then. After feral Africanized honeybees colonized, Centris had more major species and fewer rare. Some herbarium vouchers from the study area contained exotic pollen, demonstrating in situ floral contamination and ecological generalization by bees, but this rarely occurred in plants found among the bee diets. Megachile and Centris responded differently to competition and resource scarcity, and plausibly evolved under different disturbance regimes, yet appeared well adapted to hurricane disturbance.


49.
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On the occurrence of caligids (Copepoda: Siphonostomatoida) in the marine plankton: a review and checklist
Venmathi Maran, Balu Alagar ; Suárez Morales, Eduardo ; Ohtsuka, Susumu (coaut.) ; Soh, Ho Young (coaut.) ; Hwang, Ui Wook (coaut.) ;
Contenido en: Zootaxa Vol. 4174, no. 1 (Oct. 2016), p. 437–447 ISSN: 1175-5334
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Members of the copepod genus Caligus Müller, 1785 (Siphonostomatoida: Caligidae) are commonly referred to as sea lice. Virtually all of the more than 450 species utilize marine fishes as hosts, however, an increasing number of records from marine plankton samples shows that at least some species reside in the water column during their adult phase. Members of three different genera, Caligus, Lepeophtheirus von Nordmann, 1832, and Metacaligus Thomsen, 1949 have been reported from plankton samples off eastern Asia and in the north-western Atlantic. Thirteen species have so far been consistently reported from the plankton only with no information on their hosts. Here we review the various hypotheses previously proposed to explain the presence of caligids in the water column, i.e. accidental occurrence, behavioral detachment from the host during mate location, and host-switching. The discovery of adults of two species of Caligus with no other developmental stages on their teleost hosts, suggests an ontogenetic host-switching after the final molt since both species also occurred in plankton samples. A checklist of all caligid records from the marine plankton, including known host data, is presented.


50.
Artículo
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Resumen en: Español | Inglés |
Resumen en español

Actualmente muchas especies de peces conocidos como plecos o peces diablo (Loricariidae) han sido introducidas en ambientes silvestres fuera de su área de distribución natural. Sin embargo, hay poco conocimiento acerca de su papel como vectores de parásitos que puedan infectar a los peces nativos o incluso los seres humanos a través de su consumo. El objetivo del presente estudio fue determinar la fauna parasitaria de las especies de plecos Pterygoplichthys pardalis (pleco leopardo) y P. disjunctivus (pleco vermiculado) en sistemas de agua dulce del sureste de México. Fueron encontradas cuatro especies de ectoparásitos en P. pardalis (1 protozoario: Ichthyophthirius multifiliis ; 2 monogeneos: Urocleidoides vaginoclastrum y Heteropriapulus heterotylus ; 1 digeneo: Clinostomum sp.) y una en P. disjunctivus (H. heterotylus ). No se encontraron endoparásitos. Ichthyophthirius multifiliis, U. vaginoclaustrum y Clinostomum sp. fueron consideradas como especies raras (prevalencia <5%), ya que estuvieron en un solo individuo de P. pardalis . Heteropriapulus heterotylus fue la única especie compartida entre ambas especies de peces y que estuvo presente durante todo el año, y representó el 96% del total de parásitos registrados en P. pardalis y el 100% en P. disjunctivus. La prevalencia, intensidad media y abundancia media de H. heterotylus mostraron importantes variaciones intra-anuales en ambas especies de peces, pero no difirió significativamente entre ambos hospederos.

Resumen en inglés

Currently many species of Amazon sailfin catfishes (Loricariidae) have been introduced to wild environments outside their native range. There is, however, little knowledge about their role as vectors of parasites that can infect native fish or even humans through its consumption. The aim of the present study was to determine the parasitic fauna of the invasive sailfin catfish species Pterygoplichthys pardalis (leopard pleco) and P. disjunctivus (vermiculated pleco) from freshwater systems in the southeast of Mexico. Four ectoparasite species were found in P. pardalis (1 protozoan: Ichthyophthirius multifiliis ; 2 monogeneans: Urocleidoides vaginoclastrum and Heteropriapulus heterotylus ; 1 digenean: Clinostomum sp.), and only one in Heteropriapulus disjunctivus (H. heterotylus ). No endoparasites were found. Ichthyophthirius multifiliis , U. vaginoclaustrum and Clinostomum sp. , were considered as rare species (prevalence <5%) since they were found in a single individual of P. pardalis . H. heterotylus was the only species shared among both host species and it occurs throughout the year. This monogenean species represents 96% of total parasites recorded in P. pardalis and 100% in P. disjunctivus. Monthly values of prevalence, intensity and abundance of H. heterotylus in both host species showed important intra-annual variations, but not differ significantly between both hosts.