消息
loading
Mechanisms of insecticide resistance in Aedes aegypti (L.) (Diptera: Culicidae) from Puerto Rico

Publisher: Cambridge University Press

E-ISSN: 1475-2670|79|1|123-130

ISSN: 0007-4853

Source: Bulletin of Entomological Research, Vol.79, Iss.1, 1989-03, pp. : 123-130

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

A strain of Aedes aegypti (L.) was collected in Rio Piedras, Puerto Rico, in 1987 and reared through to the F2 generation. The strain was shown to be heterozygous for resistance to a range of pyrethroids, but there was no evidence of organophosphate and carbamate resistance. Biochemical studies indicated that the pyrethroid resistance was not metabolically based. Electrophysiological studies at the neuromuscular junction of resistant insects indicated that a kdr (nerve insensitivity) type mechanism was operating in this strain. It is not known whether this mechanism was selected by earlier DDT exposure or by the recent ultra-low-volume applications of pyrethroids.