Data/hora: 26/07/2024 22:45:34

Provedor de dados: 	Revista Brasileira de Entomologia	
País: 	Brazil	
Título: 	Status and preliminary mechanism of resistance to insecticides in a field strain of housefly (Musca domestica, L)	
Autores: 	Li,Qingfeng; Huang,Jianbo; Yuan,Jianzhong.	
Data: 	2018-12-01	
Ano: 	2018	
Palavras-chave: 	Acetylcholinesterase activity; Insecticide resistance; Musca domestica; Resistance mechanism; Synergism.	
Resumo: 	ABSTRACT Resistance profiles of houseflies (Gol-RR) collected from a field in Golmud city, Qinghai province, China, were determined for seven insecticides using topical bioassays. Resistance ratios of &gt;1219.51, 153.17, &gt;35.43, 6.12, 3.24, 1.73, and 0.86-fold were obtained for propoxur, cypermethrin, imidacloprid, indoxacarb, chlorpyrifos, fipronil, and chlorfenapyr, respectively, relative to a laboratory susceptible strain (SS). Synergism experiments showed that piperonyl butoxide (PBO), triphenylphosphate (TPP), and diethyl maleate (DEM) increased propoxur toxicity by &gt;105.71, &gt;7.88, and &gt;5.15-fold in the Gol-RR strain, compared with 5.25, 2.00, and 1.39-fold in the SS strain, indicating the involvement of P450 monooxygenases, esterases, and glutathione-S-transferase in conferring resistance. Although cypermethrin resistance was significantly suppressed with PBO, TPP, and DEM in the Gol-RR strain, the synergistic potential of these agents to cypermethrin was similar in the SS strain, demonstrating that metabolism-mediated detoxification was not important for conferring resistance to cypermethrin in the Gol-RR strain. However, the three agents did not act synergistically with imidacloprid, indicating that other mechanisms may be responsible for the development of resistance to this insecticide. Acetylcholinesterase (AChE) activity was 13.70-fold higher in the Gol-RR than in the SS strain, suggesting the properties of the AChE enzyme were altered in the Gol-RR strain. Thus, rotation of chlorfenapyr insecticide with other agents acting through a different mode with minimal/no resistance could be an effective resistance management strategy for housefly.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000400311	
Editor: 	Sociedade Brasileira De Entomologia	
Relação: 	10.1016/j.rbe.2018.09.003	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Entomologia  v.62 n.4 2018	
Fonte: 	info:eu-repo/semantics/openAccess