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Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Print version ISSN 0102-0935


ZIMMER, C.R.; CARCAMO, M.C.; RIBEIRO, P.B.  and  NASCIMENTO, J.S.. Action of Metarhizium anisopliae fungi over the development of Muscina stabulans dipteran in laboratory. Arq. Bras. Med. Vet. Zootec. [online]. 2010, vol.62, n.5, pp.1142-1147. ISSN 0102-0935.

The development of Muscina stabulans (Diptera, Muscidae) after exposure to Metarhizium anisopliae (CG34 isolated) fungi under laboratory conditions was evaluated. Suspensions of spores were prepared in concentrations of 105, 106, 107, and 108conidia/mL-1. Ninety postfeeding larvae per treatment, divided into five treatments and three repetitions, were dived for one second in the respective suspensions, and transferred to Petri dishes with humidified filter paper and maintained in BOD at 25 ºC with 80% relative humidity and a 12:12h photoperiod, until the emergency of adults. The rate of pupal mortality and the period of pupal development were evaluated. The larvae showed susceptibility to the action of M. anisopliae in different levels of concentration. The pupal mortality increased accordingly to the increase in the conidia concentration (from zero to 47%), as well as prolonged the time of development of the pupae (from 8.8 to 10 days). The application of M. anisopliae in this phase of the biological cycle compromised the development of M. stabulans and interfered in the natural control of pests that develop in the same environment.

Keywords : sinanthropic fly; biological control; microbial control.

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