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Effect of Beauveria bassiana on the ovarian development and reproductive potential of Anastrepha ludens (Diptera: Tephritidae)

Sánchez Roblero, David | Huerta Palacios, Graciela [autor/a] | Valle Mora, Javier Francisco [autor/a] | Gómez Ruiz, Jaime, 1961-2021 [autor/a] | Toledo, Jorge [autor/a].
Tipo de material: Artículo ArtículoTema(s): Moscas de la fruta | Beauveria bassiana | Agentes biológicos para el control de plagasTema(s) en inglés: Fruit flies | Beauveria tenella | Biological pest control agentsDescriptor(es) geográficos: Región Soconusco (Chiapas, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Biocontrol Science and Technology. volumen 22, número 9 (September 2012), páginas 1075-1091. --ISSN: 0958-3157Número de sistema: 51445Resumen:
Inglés

We investigated the virulence of a native strain of Beauveria bassiana on the mortality, ovarian development, oogenesis, survival, fecundity and fertility of 4-, 8- and 12-day-old Anastrepha ludens females. In the first study, this strain caused 85% mortality in 8-day-old treated females, with a median lethal concentration (LC50) of 3.1 108 (2.1 108 4.7 108) conidia/mL and a median lethal time (LT50) of 6.5 days. In the second study, the ovarian development and oogenesis of A. ludens females treated with 1 109 conidia/mL were monitored daily in sacrificed flies. The fungus infection did not significantly affect ovarian development of the treated females, although there was a delay in vitellogenesis and a reduction in the quantity of mature basal oocytes and oviposition index in these flies. Moreover, the lowest net fecundity was found in 4-, 8- and 12-day-old treated females, and reduced fertility was observed in 4-day-old treated females. An application to test the potential use of this strain under field conditions is discussed.
Lista(s) en las que aparece este ítem: Graciela Huerta Palacios | Dr. Jaime Gómez Ruíz | Bibliografía DEAMP
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Disponible para usuarios de ECOSUR con su clave de acceso

We investigated the virulence of a native strain of Beauveria bassiana on the mortality, ovarian development, oogenesis, survival, fecundity and fertility of 4-, 8- and 12-day-old Anastrepha ludens females. In the first study, this strain caused 85% mortality in 8-day-old treated females, with a median lethal concentration (LC50) of 3.1 108 (2.1 108 4.7 108) conidia/mL and a median lethal time (LT50) of 6.5 days. In the second study, the ovarian development and oogenesis of A. ludens females treated with 1 109 conidia/mL were monitored daily in sacrificed flies. The fungus infection did not significantly affect ovarian development of the treated females, although there was a delay in vitellogenesis and a reduction in the quantity of mature basal oocytes and oviposition index in these flies. Moreover, the lowest net fecundity was found in 4-, 8- and 12-day-old treated females, and reduced fertility was observed in 4-day-old treated females. An application to test the potential use of this strain under field conditions is discussed. eng

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