TY - JOUR

T1 - Autodissemination of Metarhizium anisopliae and Beauveria bassiana in Musca domestica L. results in less oviposition and short gonotrophic cycle

AU - García-Munguía, C. A.

AU - Reyes-Villanueva, F.

AU - Rodriguez-Perez, M. A.

AU - Cortez-Madrigal, H.

AU - Acosta-Ramos, M.

AU - Ibarra-Juárez, L. A.

AU - Velázquez-Machuca, M. A.

AU - Silva-García, J. T.

AU - Rebollar-Plata, M.

AU - Garcia-Munguia, A. M.

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Beauveria bassiana (Bals.-Criv.) Vuill. and Metarhizium anisopliae (Metchnikoff) Sorokin were autodisseminated in the house fly, Musca domestica L., when one, five, and 10 virgin, 3-day old males exposed to 6 × 108 conidia ml-1 per fungus were confined with 30 females of the same age. Fungal treatments with one or five males killed few, with LT50 of 7 and 5 days, respectively, but when 10 funguscontaminated males were placed with 30 flies, LT50 was 3 days with a sporulation rate of 94% and 66% less oviposition. Moreover, confinement of one, five, or 10 fungal-infected males caused an incremental increase in virulence, reducing the LT50. The regression of the mean of eggs, first-instar larvae, and days of gonotrophic cycle on the LT50 values of nine treatments (six fungal groups and three checks) showed that the three variables decreased about 3-4 units per unit of LT50. Likewise, when the gonotrophic cycle time was regressed on mean oviposition, a linear equation demonstrated that for each decrease of 15 eggs, the gonotrophic cycle was 1 day shorter, which was shortened from 7 days in healthy flies to 2 in females of the fungal treatment with 10 males. Ten virgin males impregnated with spores of either fungus infected and killed 50% of the exposed females in 3 days. This autodissemination could be used to improve integrated control of M. domestica in the field and human environments.

AB - Beauveria bassiana (Bals.-Criv.) Vuill. and Metarhizium anisopliae (Metchnikoff) Sorokin were autodisseminated in the house fly, Musca domestica L., when one, five, and 10 virgin, 3-day old males exposed to 6 × 108 conidia ml-1 per fungus were confined with 30 females of the same age. Fungal treatments with one or five males killed few, with LT50 of 7 and 5 days, respectively, but when 10 funguscontaminated males were placed with 30 flies, LT50 was 3 days with a sporulation rate of 94% and 66% less oviposition. Moreover, confinement of one, five, or 10 fungal-infected males caused an incremental increase in virulence, reducing the LT50. The regression of the mean of eggs, first-instar larvae, and days of gonotrophic cycle on the LT50 values of nine treatments (six fungal groups and three checks) showed that the three variables decreased about 3-4 units per unit of LT50. Likewise, when the gonotrophic cycle time was regressed on mean oviposition, a linear equation demonstrated that for each decrease of 15 eggs, the gonotrophic cycle was 1 day shorter, which was shortened from 7 days in healthy flies to 2 in females of the fungal treatment with 10 males. Ten virgin males impregnated with spores of either fungus infected and killed 50% of the exposed females in 3 days. This autodissemination could be used to improve integrated control of M. domestica in the field and human environments.

UR - http://www.scopus.com/inward/record.url?scp=84942804679&partnerID=8YFLogxK

U2 - 10.3958/059.040.0310

DO - 10.3958/059.040.0310

M3 - Artículo

VL - 40

SP - 519

EP - 529

JO - Southwestern Entomologist

JF - Southwestern Entomologist

SN - 0147-1724

IS - 3

ER -