TESTING ANOPHELES-ALBIMANUS FOR GENETIC-LINKAGE OF INSECTICIDE RESISTANCE GENES BY COMBINING INSECTICIDE BIOASSAY AND BIOCHEMICAL METHODS

被引:5
作者
LINES, JD
FFRENCHCONSTANT, RH
KASIM, SH
机构
关键词
acetyl‐cholinesterase; Anopheles albimanus; bioassay; biochemical assay; dieldrin; insecticide resistance; propoxur;
D O I
10.1111/j.1365-2915.1990.tb00464.x
中图分类号
Q96 [昆虫学];
学科分类号
摘要
Abstract. A microtitre‐plate assay which distinguishes propoxur‐resistant from susceptible Anopheles albimanus Weidemann was used to test for linkage between the genes for propoxur‐ and dieldrin‐resistance. The adult progeny of a backcross between a doubly‐resistant colony and a fully susceptible colony were exposed in conventional test kits to the standard discriminating dose of dieldrin, and kept in the insectary overnight. Both live and dead insects were then assayed individually for propoxur‐resistance. The results showed that heterozygotes for propoxur‐resistance could be reliably distinguished from susceptibles whether or not they had been killed up to 24 h previously by dieldrin treatment. In this way all the backcross progeny could be scored at both resistance loci, and all four genotypic classes identified. Resistant and susceptible alleles at the two loci were inherited independently, demonstrating the absence of linkage. The usual method of testing for linkage between resistance genes is inefficient and open to bias, because insects have to be exposed to each insecticide in turn, and only half of them can be scored at both loci. The method shown here avoids these drawbacks. Copyright © 1990, Wiley Blackwell. All rights reserved
引用
收藏
页码:445 / 450
页数:6
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