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Beauveria bassiana as a pathogen of the mexican fruit fly (Diptera: tephritidae) under laboratory conditions

Por: De la Rosa Reyes, William. Doctor [autor/a].
López, F. L [autor/a] | Liedo Fernández, Pablo [autor/a].
Tipo de material: Artículo impreso(a) Artículo impreso(a) Tema(s): Beauveria bassiana | Entomopatógenos | Moscas de la fruta | Control biológico de plagasClasificación: AR/632.774 / D4 Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Journal of Economic Entomology. volumen 95, número 1 (February 2002), páginas 36-43. --ISSN: 0022-0493Número de sistema: 32271Resumen:
Inglés

Bioassays were carried out under controlled conditions (27 +/- 2 degrees C, 80 +/- 5% RH, and a photoperiod of 12:12 [L:D] h) to evaluate the effect of eight strains of the entomopathogenic fungus Beauveria bassiana upon larvae, pupae, and adult females of the Mexican fruit fly, Anastrepha ludens (Loew). Mortality of the immature stages was low, 2-8% in larvae and 0% in pupae. However, very high levels of mortality were obtained for adult flies, with values of 100, 98, and 98% for the strains Bb16, Bb24, and Bb26, respectively. LC50 values for these three strains ranged from 3.12 x 10(6) to 9.07 x 10(6) conidia/ml. Lethal time 50 (LT50) was 2.8, 3.7, and 4.2 d for Bb16, Bb26, and Bb24 strains, respectively, with an average LT50 of 4.4 d across all strains. The fungal mycelium emerged through the soft parts of the exoskeleton, such as the wing bases, mouth, intersegmental regions of the legs, and membranous regions of the abdomen, coxae, and neck. Maximum percentage sporulation ranged from 66.4 to 74.7% for the three most virulent strains.
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Artículos (AR) 		ECOSUR AR 632.774 D4 003 Disponible ECO040003407
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Bioassays were carried out under controlled conditions (27 +/- 2 degrees C, 80 +/- 5% RH, and a photoperiod of 12:12 [L:D] h) to evaluate the effect of eight strains of the entomopathogenic fungus Beauveria bassiana upon larvae, pupae, and adult females of the Mexican fruit fly, Anastrepha ludens (Loew). Mortality of the immature stages was low, 2-8% in larvae and 0% in pupae. However, very high levels of mortality were obtained for adult flies, with values of 100, 98, and 98% for the strains Bb16, Bb24, and Bb26, respectively. LC50 values for these three strains ranged from 3.12 x 10(6) to 9.07 x 10(6) conidia/ml. Lethal time 50 (LT50) was 2.8, 3.7, and 4.2 d for Bb16, Bb26, and Bb24 strains, respectively, with an average LT50 of 4.4 d across all strains. The fungal mycelium emerged through the soft parts of the exoskeleton, such as the wing bases, mouth, intersegmental regions of the legs, and membranous regions of the abdomen, coxae, and neck. Maximum percentage sporulation ranged from 66.4 to 74.7% for the three most virulent strains. eng

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