Términos relacionados

403 resultados encontrados para: TEMA: Parásitos
  • «
  • 1 de 17
  • »
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
PDF
Resumen en: Inglés |
Resumen en inglés

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
PDF
Resumen en: Inglés |
Resumen en inglés

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.
Artículo
PDF

5.
Artículo
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

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.


PDF

7.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

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.
Artículo
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

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.


PDF PDF
Resumen en: Inglés |
Resumen en inglés

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
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

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.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

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).


PDF
Resumen en: Inglés |
Resumen en inglés

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.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

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
PDF
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
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
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
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
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
*Solicítelo con su bibliotecario/a
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
Nota: Solicítelo con su bibliotecario/a
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
PDF PDF
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
PDF
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
PDF
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