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30 resultados encontrados para: TEMA: Competencia (Biología)
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1.
- 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.


2.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Intrinsic competition between Diachasmimorpha longicaudata and three native species of parasitoids (Hymenoptera: Braconidae: Opiinae) of Anastrepha (Diptera: Tephritidae) fruit flies under laboratory conditions
Murillo Cuevas, Félix David (autor) ; Montoya Gerardo, Pablo Jesús (autor) ; Cabrera Mireles, Héctor (autor) ; Barrera, Juan F. (autor) ; Liedo Fernández, Pablo (autor) ;
Contenido en: Biocontrol Science and Technology Vol. 29, no. 8 (2019), p. 757-772 ISSN: 0958-3157
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Resumen en: Inglés |
Resumen en inglés

The effect of intrinsic competition between the exotic parasitoid Diachasmimorpha longicaudata (Ashmead) and the native species Doryctobracon crawfordi (Viereck), Utetes anastrephae (Viereck) and Opius hirtus (Fischer) (all Braconidae: Opiinae) was studied under laboratory conditions. Each native species and D. longicaudata acted as both a resident and an invader, and all species were introduced to the host simultaneously. Diachasmimorpha longicaudata was found to be the most competitive species because it achieved the highest parasitism percentage under all the experimental conditions, but it was also negatively affected by the presence and parasitic activity of the native parasitoids. Utetes anastrephae was the only species that maintained its parasitic rate when all species attacked the available hosts simultaneously. The emergence probability of a female D. longicaudata was positively associated with the increase in the number of scars on the cuticle of the host pupa, but this association was not observed for the native species. It was concluded that D. longicaudata is an intrinsic competitor that is superior to D. crawfordi, U. anastrephae and O. hirtus, whether acting as a resident or an invader, producing a female-biased sex ratio in all the evaluation conditions. Utetes anastrephae was the native species that was least affected by the competitive presence of D. longicaudata, which suggests that it could be used as a complementary biological control agent for Anastrepha fruit flies.


3.
Tesis - Doctorado
Patrones espaciales y estacionales de las comunidades de arañas del bosque mesófilo de montaña en el sureste mexicano / Emmanuel Franco Campuzano Granados
Campuzano Granados, Emmanuel Franco (autor) ; Ibarra Núñez, Guillermo (director) ; Jiménez Jiménez, María Luisa (asesora) ; Machkour M'Rabet, Salima (asesora) ;
Tapachula, Chiapas, México : El Colegio de la Frontera Sur , 2019
Clasificación: TE/595.44097275 / C35
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
ECO020013782 (Disponible)
Disponibles para prestamo: 1
Resumen en español

En México, el bosque mesófilo de montaña (BMM) es considerado como uno de los ecosistemas con alto riesgo de desaparecer y los esfuerzos para su conservación destacan la importancia de incrementar el conocimiento sobre taxa claves (como las arañas) que puedan servir de base para la planeación de futuras estrategias de manejo. En la presente tesis se realizaron muestreos intensivos en tres localidades dentro del área más grande y continua de BMM en México, la Sierra Madre de Chiapas (SMCh), para estudiar la diversidad y dinámica espacio-temporal de sus comunidades de arañas. En el capítulo II, se comparó la composición de especies recolectadas en la localidad de El Triunfo respecto a la de un estudio previo realizado en la misma region. Se observó un elevado recambio de especies e importantes afinidades a nivel de familias, géneros y proporción de especies no descritas. En el capítulo III, se investigó la respuesta espacio-temporal de las arañas asociadas a los estratos de suelo y sotobosque de la misma localidad. Se demostró una marcada estratificación vertical acompañada de diferentes patrones estacionales en las especies de cada estrato. En el capítulo IV, se describe una nueva especie del género Wirada, una de las especies con distribución compartida en todo el estudio y cuyo género ha sido escasamente estudiado. Se incluye una nueva diagnosis para el género, se homologan estructuras genitales respecto a la hipótesis evolutiva más reciente de la familia, se discute su estatus taxonómico y se incluye información de su biología. En conclusión, el BMM del la SMCh alberga una gran cantidad de especies no descritas y hasta ahora endémicas del hábitat. Además, muestra una dinámica espacio-temporal compleja sobre la estructura de sus comunidades, misma que es influenciada por sus especies dominantes, siendo de utilidad potencial como bioindicadores para este tipo de bosque.

Índice

Resumen
Palabras clave
Capítulo I. Introducción
Capítulo II. Spiders (Arachnida: Araneae) of the tropical mountain cloud forest from El Triunfo Biosphere Reserve, Mexico
Introduction
Materials and methods
Results
Discussion
Acknowledgments
Literature cited
Tables
Figure captions
Capítulo III. Diversity and seasonal variation of floor and understory spiders from a tropical mountain cloud forest
Abstract
Introduction
Materials and methods
Results
Discussion
Acknowledgments
References
Appendix and tables
Figure captions
Capítulo IV. A new species of the spider genus Wirada (Araneae, Theridiidae) from Mexico with taxonomic notes on the genus and a key to the species
Capítulo V. Conclusiones generales
Literatura Citada
Anexo. Lista de especies y morfoespecies recolectadas en el bosque mesófilo de montaña de la Sierra Madre de Chiapas


4.
Tesis - Doctorado
*En proceso técnico. Solicítelo con el bibliotecario(a) de SIBE-Chetumal
Reclutamiento de corales pétreos y su relación con algas sobre placas de carbonato de calcio en el Parque Nacional Arrecifes de Xcalak / Oscar Ariel Angulo Oliva
Angulo Oliva, Oscar Ariel ; Medina Quej, Alejandro (director) ; Ruíz Zárate, Miguel Ángel (director) ;
Chetumal, Quintana Roo, México : Instituto Tecnológico de Chetumal , 2019
Clasificación: TE/577.789097267 / A5
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008779 (Disponible)
Disponibles para prestamo: 1
Nota: En proceso técnico. Solicítelo con el bibliotecario(a) de SIBE-Chetumal

Resumen en: Inglés |
Resumen en inglés

Marine protected areas (MPAs) conserve diversity and abundance of fish communities. According to the biotic resistance hypothesis, communities with higher diversity and abundance should resist invasions better. To test this idea, the presence of lionfish in two Caribbean MPAs was studied: Parque Nacional Guanahacabibes (PNG) in Cuba and Parque Nacional Arrecifes de Xcalak (PNAX) in Mexico. Selection of these MPAs was based on both their different levels of success with enforcement and different abundances of native fish, with a more abundant native fish fauna at PNG. Underwater visual censuses were used to evaluate both the native fish structure and composition and at the same time distribution and abundance of lionfish. The abundance of potential predators on lionfish was also measured to determine possible effects of lionfish on both the abundance and the size of its prey and competitors. Lionfish showed higher abundance and larger size in PNG compared to PNAX, even though its probable competitors and predators were also more abundant and larger in PNG. Prey abundance and size decreased after the invasion. No correlation was detected between potential predators and lionfish, which might indicate natural predation is not substantial. In PNAX, lower abundance of prey, potential competitors and predators can also be attributed to historical overfishing, but this did not provide an advantage to lionfish. Lionfish were less abundant and reached smaller sizes in PNAX compared to PNG. This work confirms the effectiveness of lionfish culling at PNAX, but does not support the biotic resistence hypothesis that native fish might have controlled this invasive species.


6.
Artículo
*Solicítelo con su bibliotecario/a
Have native Hymenoptera or Africanized bees become aggressive foragers due to resource competition?
Roubik, David Ward (1951-) ; Villanueva Gutiérrez, Rogel (coaut.) ;
Contenido en: Trends in Entomology Vol. 13 (2017), p. 95-102 ISSN: 0972-4761
Nota: Solicítelo con su bibliotecario/a

7.
Tesis - Doctorado
Competencia interespecífica asociada al control biológico por aumento de moscas del género Anastrepha (Diptera: Tephritidae) / Félix David Murillo Cuevas
Murillo Cuevas, Félix David ; Liedo Fernández, Pablo (director) ; Montoya Gerardo, Pablo Jesús (co-director) ; Barrera, Juan F. (asesor) ; Cabrera Mireles, Héctor (asesor) ;
Tapachula, Chiapas, México : El Colegio de la Frontera Sur , 2016
Clasificación: TE/632.774097262 / M8
Cerrar
SIBE Campeche
ECO040006283 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030008484 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010005335 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020013429 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050006047 (Disponible)
Disponibles para prestamo: 1
PDF
Índice | Resumen en: Español |
Resumen en español

La presente investigación tuvo como objetivo determinar si el control biológico por aumento genera competencia interespecífica con parasitoides nativos residentes en las áreas de liberación y su impacto. Se plantearon dos objetivos particulares: 1) determinar el efecto de atributos intrínsecos en las interacciones entre cuatro especies de parasitoides nativos y Diachasmimorpha longicaudata, y 2) determinar el efecto de las liberaciones aumentativas de D. longicaudata sobre el parasitismo natural. Para el primer objetivo se presentan cuatro capítulos: I) competencia intrínseca entre D. longicaudata y tres especies de parasitoides nativos en laboratorio; II) comparación de la morfología de larvas de primer instar de cuatro especies de parasitoides nativos y D. longicaudata; III) determinación de la capacidad de Doryctobracon areolatus para parasitar huevos y larvas recién eclosionadas de Anastrepha obliqua; y IV) competencia intrínseca entre D. longicaudata como invasor y dos especies nativas como residentes en frutos infestados expuestos en jaulas de campo. Los resultados demostraron que la morfología de la larva de Utetes anastrephae compensa la competencia con D. longicaudata, y que la especie Doryctobracon areolatus tiene la capacidad de parasitar embriones en el interior de huevos y larvas recién eclosionadas de A. obliqua, lo cual puede representar una ventaja al competir con D. longicaudata. Se confirmó que las especies nativas cuando son residentes defienden su recurso satisfactoriamente contra D. longicaudata. Para el segundo objetivo particular se determinó del efecto de las liberaciones por aumento de D. longicaudata sobre Anastrepha spp. y sobre el parasitismo natural (capítulo V), cuyo resultado permitió comprobar que las liberaciones por aumento de D. longicaudata complementan el parasitismo natural y reducen de manera significativa la infestación de frutos por A. obliqua.

Índice

Resumen
Introducción
Capítulo I
Competencia intrínseca entre Diachasmimorpha longicaudata y tres especies de parasitoides nativos (Hymenoptera: Braconidae: Opiinae) de moscas de la fruta Anastrepha (Diptera: Tephritidae)
Capítulo II
First instar larvae morphology of Opiinae (Hymenoptera: Braconidae) parasitoids of Anastrepha (Diptera: Tephritidae) fruit flies. Implications for interspecific competition
Capítulo III
Doryctobracon areolatus (Hymenoptera, Braconidae) a parasitoid of early developmental stages of Anastrepha obliqua (Diptera, Tephritidae)
Capítulo IV
Competencia intrínseca entre parasitoides residentes e invasores que atacan a la mosca de la fruta de las Indias Occidentales Anastrepha obliqua (Diptera: Tephritidae)
Capítulo V
Liberaciones por aumento de Diachasmimorpha longicaudata (Hymenoptera: Braconidae): efecto sobre las poblaciones de Anastrepha spp. (Diptera: Tephritidae) y su parasitismo natural
Conclusiones Finales
Literatura Citada
Anexos


8.
- Artículo con arbitraje
Resumen en: Inglés |
Resumen en inglés

The morphology of the first instars of the Opiinae braconids Diachasmimorpha longicaudata, Doryctobracon areolatus, Doryctobracon crawfordi, Utetes anastrephae and Opius hirtus (the first is exotic, and the others are natives to Mexico), parasitoids of Anastrepha fruit flies, are described and compared. The possible implications on interspecific competition among these species are discussed. The most significant adaptations found were: (1) the mouth apparatus, where the large mandibles and fang-shaped maxillary lobes present in D. longicaudata and U. anastrephae larvae were absent in O. hirtus, D. areolatus and D. crawfordi larvae, and (2) the degree of mobility for exploration and escape, such as the lateral and caudal appendages that were only present in D. longicaudata (ventrolateral appendages in the base of the head capsule), U. anastrephae (caudal lobe with two appendages) and D. areolatus (caudal lobe with a round apex with a globular shape). The first instar larvae of the species D. longicaudata show morphological adaptations that apparently confer competitive advantages against the larvae of D. areolatus, D. crawfordi and O. hirtus. However, the first instar larvae of U. anastrephae show larger mandibles, an adaptation that could enable this species to resist competition from D. longicaudata.


9.
- Capítulo de libro con arbitraje
Bee–plant interactions: competition and phenology of flowers visited by bees
Villanueva Gutiérrez, Rogel ; Roubik, David Ward (coaut.) (1951-) ; Porter Bolland, Luciana (coaut.) ;
Contenido en: Biodiversity and conservation of the Yucatan Peninsula New York : Springer International Publishing Switzerland, 2015 p. 131-152 ISBN:978-3-319-06528-1
Resumen en: Inglés |
Resumen en inglés

We present results of the flowering phenology of most plant species visited by European and Africanized honey bee (Apis mellifera ligustica and A. mellifera scutellata, respectively) in the Yucatán Peninsula. Colonies from both bee types visited the largest number of plant species at the end of the wet season (September and October) and the beginning of the dry season (November). A calendar is presented to indicate the community phenology of the floral resources of Apis mellifera. Comparisons were made in order to assess potential competition between both honey bee groups and between honey bees and native bees in relation to their food resources. Trees were also a constant pollen resource for Apis mellifera and Melipona beecheii, a native stingless bee. Solitary bees and M. beecheii bee seemed to change their floral resource use, both show ‘resource partitioning’ to avoid competition. For example, two important plant families, Anacardiaceae and Euphorbiaceae, were lost to competing honey bees, but compensated for by greater use of Fabaceae, Rubiaceae, and Sapotaceae among solitary bees. Invasive generalist pollinators may, however, cause specialized competitors to fail, especially in less biodiverse environments. Deforestation, hurricanes, and fires are three factors that affect the habitat and food resources for bee colonies. Within agricultural areas, having large areas of natural vegetation, corridors, or strips of vegetation between the crop fields is important to favor adequate diversity of natural pollinators for pollination of crop plants.


10.
- Artículo con arbitraje
Resumen en: Inglés |
Resumen en inglés

We evaluated the species composition, richness, and total abundance of the endolithic community in the skeleton of Orbicella faveolata under coral tissue and under turf algae using cores that were extracted at different distances (0.5, 2.5, and 7.0 cm) from both sides of the external coral tissue–turf algae competitive boundary. We found high endolith richness as never before reported for Orbicella species. Nineteen endolith taxa were found within the O. faveolata skeleton, seven below the coral tissue zone, and twelve exclusively below the turf algae zone. Significant differences existed in the community composition, species richness, and the total abundance of endoliths in the cores that were extracted from the turf algae zone compared with those of the coral tissue zone. The endolithic community composition and species richness changed abruptly across the coral–turf algae interface, forming a clear boundary between different endolithic communities just underneath the interface between the coral tissue and turf algae zones.