| Literature DB >> 17387711 |
Feng Cui1, Yi Tan, Chuan-Ling Qiao.
Abstract
Seven field populations of mosquito Culex pipiens complex (Diptera: Culicidae) were collected from four provinces of China. The resistance status of larvae to dichlorvos, parathion, chlorpyrifos, fenobucarb (BPMC) and propoxur were determined by bioassays, disclosing that they were more resistant to organophosphate (moderate or low resistance) than to carbamate (low or no significant resistance) insecticides. Starch gel electrophoresis confirmed the presence and distribution of overproduced esterases B1, A2-B2, A8-B8 and A9-B9, the frequencies of which varied according to their regional origins. Electrophoretic polymorphism at four putatively neutral loci (got-1, got-2, pgi and pgm) showed that the overall genetic differentiation found across all populations was significantly large (Fst = 0.28, P < 10(-4)), and genetic exchange was slightly restricted by distance isolation (P = 0.018).Entities:
Mesh:
Substances:
Year: 2007 PMID: 17387711 DOI: 10.1002/ps.1356
Source DB: PubMed Journal: Pest Manag Sci ISSN: 1526-498X Impact factor: 4.845