MECHANISMS OF INSECTICIDE RESISTANCE IN AEDES-AEGYPTI (L) (DIPTERA, CULICIDAE) FROM PUERTO-RICO
MECHANISMS OF INSECTICIDE RESISTANCE IN AEDES-AEGYPTI (L) (DIPTERA, CULICIDAE) FROM PUERTO-RICO
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DOI：
10.1017/s0007485300018630
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发表时间：
1989-03-01
影响因子：
1.9
通讯作者：
DUNBAR, SJ
中科院分区：
文献类型：
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作者：
HEMINGWAY, J;BODDINGTON, RG;DUNBAR, SJ
埃及伊蚊(Aedes Aegypti(L.)1987年在波多黎各的里约皮德拉斯采集，并传给F2代。该菌株对一系列拟除虫菊酯具有杂合性抗性，但没有证据表明对有机磷和氨基甲酸酯具有抗性。生化研究表明，拟除虫菊酯抗性不是以代谢为基础的。抗性昆虫神经肌肉接头处的电生理研究表明，该品系存在神经不敏感(Kdr)类型的机制。目前尚不清楚这一机制是由较早的DDT暴露还是最近超低剂量的拟除虫菊酯应用所选择的。
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.