MECHANISM OF RESISTANCE TO INSECTICIDE IN HOUSEFLIES
MECHANISM OF RESISTANCE TO INSECTICIDE IN HOUSEFLIES
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DOI:
10.1038/168193a0
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发表时间:
1951-01-01
期刊:
影响因子:
64.8
通讯作者:
BUSVINE, JR
中科院分区:
文献类型:
--
作者:
BUSVINE, JR
Minute drops of DDT in oil (acetone is too volatile) gave similar results externally or injected; thus, resistance is not due to the cuticle. The Sardinian resistant strain was relatively less resistant than the Italian resistant strain to analogs of DDT like methyoxychlor which are stable to dehydrochlorination in vitro; both strains were resistant to the labile analogs. In knock-down tests with residual DDT the Italian strain was resistant; the Sardinian flies were quickly paralyzed, but recovered after removal from the film. The Italian strain was resistant to DDT and pyrethrins, but not to 7 other insecticides. The Sardinian strain was resistant to DDT and 5 others (including 3 not used in Sardinia) but not to pyrethrins. Dehydrochlorination may account for resistance in the Sardinian strain, but another mechanism must be postulated for the Italian strain.