Título

Host acceptance by three native braconid parasitoid species attacking larvae of the Mexican fruit fly, Anastrepha ludens (Diptera, Tephritidae)

Autor

Amanda Pricila Ayala Ayala

Gabriela Pérez Lachaud

Jorge Toledo

Pablo Liedo

Pablo Montoya

Nivel de Acceso

Acceso Abierto

Resumen o descripción

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. "

Fecha de publicación

2018

Tipo de publicación

Artículo

Formato

application/pdf

Fuente

Journal of Hymenoptera Research. No. 63 (April 2018), p. 33-49. ISSN: 1070–9428

Idioma

Inglés

Audiencia

Público en general

Repositorio Orígen

Repositorio Institucional de ECOSUR

Descargas

290

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