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Intrinsic competition between resident and invasive parasitoids (Hymenoptera: Braconidae) that attack the West Indian fruit fly Anastrepha obliqua under field conditions

Murillo Cuevas, Félix David | Cabrera Mireles, Héctor [autor/a] | Barrera, Juan F [autor/a] | Liedo Fernández, Pablo [autor/a] | Montoya Gerardo, Pablo Jesús [autor/a].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Anastrepha obliqua | Moscas de la fruta | Parasitoides | Diachasmimorpha longicaudata | Doryctobracon areolatus | Utetes anastrephae | Competencia interespecífica | Control biológico de plagasTema(s) en inglés: Anastrepha obliqua | Fruit flies | Parasitoids | Diachasmimorpha longicaudata | Doryctobracon areolatus | Utetes anastrephae | Interspecific competition | Pest control biologicalDescriptor(es) geográficos: Medellín (Veracruz de Ignacio de la Llave, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Biocontrol Science and Technology. volumen 29, número 3 (2019), páginas 252-262. --ISSN: 1360-0478Número de sistema: 59481Resumen:
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We evaluated under semi-field conditions the intrinsic competition between Diachasmimorpha longicaudata (Ashmead), as an invasive parasitoid, and Doryctobracon areolatus (Szépligeti) and Utetes anastrephae (Viereck) (all Hymenoptera: Braconidae) as resident parasitoids, as well as that between U. anastrephae as an invader and D. areolatus as a resident. The percentage of live D. areolatus larvae decreased by 39.8% and 29.4% following attack by D. longicaudata and U. anastrephae as invasive parasitoids, respectively. Likewise, the parasitism percentage of D. areolatus decreased by 31.5% and 60.8% under competition with the invasive parasitoids D. longicaudata and U. anastrephae, respectively. Parasitism by D. longicaudata decreased by 44.6% and 41.6% in the presence of the residents D. areolatus and U. anastrephae, respectively, while parasitism of U. anastrephae was only affected when this species was a resident. We concluded that D. areolatus is an inferior intrinsic competitor and that U. anastrephae resists the competitive presence of D. longicaudata.

Recurso en línea: https://www.tandfonline.com/doi/full/10.1080/09583157.2018.1548573?af=R
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We evaluated under semi-field conditions the intrinsic competition between Diachasmimorpha longicaudata (Ashmead), as an invasive parasitoid, and Doryctobracon areolatus (Szépligeti) and Utetes anastrephae (Viereck) (all Hymenoptera: Braconidae) as resident parasitoids, as well as that between U. anastrephae as an invader and D. areolatus as a resident. The percentage of live D. areolatus larvae decreased by 39.8% and 29.4% following attack by D. longicaudata and U. anastrephae as invasive parasitoids, respectively. Likewise, the parasitism percentage of D. areolatus decreased by 31.5% and 60.8% under competition with the invasive parasitoids D. longicaudata and U. anastrephae, respectively. Parasitism by D. longicaudata decreased by 44.6% and 41.6% in the presence of the residents D. areolatus and U. anastrephae, respectively, while parasitism of U. anastrephae was only affected when this species was a resident. We concluded that D. areolatus is an inferior intrinsic competitor and that U. anastrephae resists the competitive presence of D. longicaudata. eng

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