Resistance of Musca domestica L. populations to cyromazine (insect growth regulator) in Brazil

Memórias do Instituto Oswaldo Cruz

Mara Cristina Pinto¹  Angelo Pires Do Prado¹ 

[1] ,Universidade Estadual de Campinas Instituto de Biologia Departamento de ParasitologiaCampinas SP ,Brasil

关键词: Musca domestica;    larvicide;    resistance;    insect growth regulator;    cyromazine;    poultry farms;   

DOI  :  10.1590/S0074-02762001000500027

来源: SciELO

【 摘 要 】

Five field populations of Musca domestica L. collected in poultry farms were bioassayed in order to detect possible resistance to the larvicide cyromazine in Brazil. The concentrations used were 0, 0.5, 0.1, 0.2, 0.4, 1, 2, 4 and 8 ppm. Three populations (Petrópolis, RJ, Montes Claros, MG and Promissão, SP) were resistant, while the other two populations (Ibiuna, SP and Monte Mor, SP) were more susceptible than the reference pathern used by the World Health Organization. The presence of three resistant house fly populations to cyromazine in Brazilian poultry farms strongly suggests that the operational aspects of larvicide use are important for the resistance development. Cyromazine is applied as a feed-through, both in Brazil and in the USA, where resistance has already been documented. However, in Denmark, where it was approved only as a topical manure spray, no case of resistance has yet been detected.

【 授权许可】

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