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5 resultados encontrados para: AUTOR: Ayala Ayala, Amanda Pricila
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1.
Tesis - Doctorado
Resumen en español

El objetivo del presente trabajo fue determinar el comportamiento de búsqueda y aceptación de hospedero, ante la presencia del superparasitismo y su repercusión en la longevidad y fecundidad de tres especies de parasitoides de larva, nativos del género Anastrepha. Se observó el comportamiento de oviposición y aceptación de hospedero bajo condiciones de laboratorio, para lo cual ofrecimos simultáneamente larvas de tercer estadio de Anastrepha ludens previamente parasitadas por conespecíficos y larvas sin parasitar. Se construyó un etograma para cada especie. Las pruebas se realizaron bajo tres condiciones: a) autosuperparasitismo hembras actuando en solitario; b) superparasitismo conespecífico, grupos de cinco hembras de la misma especie, y c) multiparasitismo, grupos de tres hembras, una de cada especie. Las especies nativas invirtieron mayor tiempo en el proceso de oviposición comparado con el tiempo reportado para las especies introducidas Diachasmimorpha longicaudata y D. tryoni. La preferencia por ovipositar en hospederos sanos se presentó en las tres especies, lo cual sugiere que la capacidad de discriminación de hospedero es una característica común en las especies. Se observó que el autosuperparasitismo es prácticamente nulo, y que el superparasitismo conespecífico fue más frecuente en Utetes anastrephae. En las pruebas de multiparasitismo, no se encontró diferencia significativa en la cantidad de adultos emergidos de las tres especies de parasitoides, sin embargo, cuando se disectaron las pupas de moscas, se observó una mayor cantidad de estados inmaduros de U. anastrephae. Las tres especies inmovilizaron a sus hospederos durante el proceso de oviposición, fueron capaces de identificar hospederos previamente parasitados cuando habían sido atacados por conespecíficos y el superparasitismo fue poco frecuente, lo que sugiere que el no superparasitar es una adaptación de las especies nativas.

Índice

Resumen
Capítulo 1
1. Introducción
2. Objetivos
3. Marco teórico
Capítulo 2
Host acceptance by three native parasitoid species (Hymenoptera: Braconidae) attacking larvae of the Mexican fruit fly, Anastrepha ludens (Diptera: Tephritidae)
Capítulo 3
Superparasitism and fitness parameters in three native parasitoid species of the Mexican fruit fly Anastrepha ludens (Diptera: Tephritidae)
Capítulo 4
Discusión general y conclusiones
Referencias
Anexos


2.
- Artículo con arbitraje
Host acceptance by three native braconid parasitoid species attacking larvae of the Mexican fruit fly, Anastrepha ludens (Diptera, Tephritidae)
Ayala Ayala, Amanda Pricila ; Pérez Lachaud, Gabriela (coaut.) ; Toledo, Jorge (coaut.) ; Liedo Fernández, Pablo (coaut.) ; Montoya Gerardo, Pablo Jesús (coaut.) ;
Contenido en: Journal of Hymenoptera Research No. 63 (April 2018), p. 33-49 ISSN: 1070–9428
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Resumen en: Inglés |
Resumen en inglés

We studied the oviposition and host acceptance behavior of three braconid parasitoid species native to Mexico, Doryctobracon crawfordi (Viereck), Opius hirtus (Fischer), and Utetes anastrephae (Viereck), with potential to be considered as biocontrol agents against tephritid fruit fly pests in the Neotropics. Third instar larvae of Anastrepha ludens (Loew), with and without previous parasitization by conspecifics, were simultaneously offered to females of each species, and the individual behavior was video recorded to construct oviposition flow diagrams. The patterns of foraging and host acceptance were similar in the studied species; all rejected mostly parasitized hosts suggesting that this strategy is common in the guild of larval parasitoids attacking Anastrepha spp. The complete searching and host acceptance process took 2.2 ± 0.1 min (mean ± SE) in D. crawfordi, 1.7 ± 0.1 s in U. anastrephae and 1.5 ± 0.1 s in O. hirtus. Notably, because of toxins injected by parasitoid females during oviposition, the parasitized hosts experienced a transient paralysis of variable duration. Hosts attacked by U. anastrephae remained immobile for the shortest time (12.5 ± 1 min) (mean±SE), followed by D. crawfordi (20.5 ± 3.4 min) and O. hirtus (24.1 ± 2 min). Our data revealed a notable discrimination ability in all three species, and that behavioral differences lay mainly in the time of parasitization and in the duration of paralysis experienced by attacked hosts. This suggest that the three species could be valuable as biocontrol agents, but additional studies are necessary to better understand the advantages and limitations of each one as natural enemies of fruit fly pests.


Resumen en: Inglés |
Resumen en inglés

To determine the natural parasitism in fruit fly populations in disturbed areas adjacent to commercial mango orchards in the states of Chiapas and Veracruz, Mexico, we recorded over one year the fruit fly–host associations, fly infestation, and parasitism rates in backyard orchards and patches of native vegetation. We also investigated the relationship between fruit size, level of larval infestation, and percent of parasitism, and attempted to determine the presence of superparasitism. The most recurrent species in trap catches was Anastrepha obliqua (Macquart), followed by Anastrepha ludens (Loew), in both study zones. The fruit infestation rates were higher in Chiapas than in Veracruz, with A. obliqua again being the most conspicuous species emerging from collected fruits. The diversity of parasitoids species attacking fruit fly larvae was greater in Chiapas, with a predominance of Doryctobracon areolatus (Sze´ pligeti) in both sites, although the exotic Diachasmimorpha longicaudata (Ashmead) was well established in Chiapas. Fruit size was positively correlated with the number of larvae per fruit, but this relationship was not observed in the level of parasitism. The number of oviposition scars was not related to the number of immature parasitoids inside the pupa of D. areolatus emerging from plum fruits. Mass releases of Di. longicaudata seem not to affect the presence or prevalence of the native species. Our findings open new research scenarios on the role and impact of native parasitoid species attacking Anastrepha flies that can contribute to the development of sound strategies for using these species in projects for augmentative biological control.


4.
Artículo
Superparasitism strategies by a native and an exotic parasitoid species attacking the Mexican fruit fly, Anastrepha ludens (Diptera: Tephritidae)
Ayala Ayala, Amanda Pricila ; Figueroa, Isaac (coaut.) ; Pineda, Samuel (coaut.) ; Miranda, Mario (coaut.) ; Liedo Fernández, Pablo (coaut.) ; Montoya Gerardo, Pablo Jesús (coaut.) ;
Contenido en: Biocontrol Science and Technology DOI: 10.1080/09583157.2014.904503 (Apr 2014) ISSN: 0958-3157
Resumen en: Inglés |
Resumen en inglés

Superparasitism refers to the action of parasitoids ovipositing eggs in hosts that are already parasitized; this inevitably results in the elimination of supernumerary larvae in solitary parasitoids. Here, we investigated superparasitism performed by two species of solitary parasitoids on the larvae of Anastrepha ludens (Loew) (Diptera: Tephritidae): a native species, Doryctobracon crawfordi (Viereck) (Hymenoptera: Braconidae), and an exotic species, Diachasmimorpha tryoni (Cameron) (Hymenoptera: Braconidae). Tests were conducted under laboratory conditions evaluating the behavior of females acting alone (self-superparasitism) or in groups (conspecific superparasitism). Parasitism strategies were different between these two species. In D. crawfordi, the number of first instar larvae found in each dissected host pupa was never greater than two, regardless of the number of oviposition scars observed per pupa. In contrast, there was a positive correlation between the number of oviposition scars and the number of first instar larvae in D. tryoni. The survival and fecundity of D. crawfordi females emerging from pupae with one scar was higher than in females emerging from pupae with more scars. In D. tryoni, the number of oviposition scars did not show deleterious effects on life history traits and was positively correlated with the proportion of emerging females. An understanding of the superparasitism strategy adopted by parasitoid species could be of great interest to augmentative biological control programs because the mass rearing of natural enemies could be negatively or positively affected by this condition.


5.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Establecimiento y producción temprana de forraje de Ramón (Brosimum alicastrum swartz) en plantaciones a altas densidades en el norte de Yucatán, México
Ayala Ayala, Amanda Pricila ; Sandoval, S. M. (coaut.) ;
Contenido en: Agroforestería en las Américas Año 2, no. 7 (julio-septiembre 1995), p. 10-16 ISSN: 1022-7482
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
28919-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal