摘要
１９８８—１９９０年抗性监测表明，河南棉区棉蚜Ａｐｈｉｓ ｇｏｓｓｙｐｉｉＧｌｏｖｅｒ对杀灭菊酯、氧化乐果和久效磷的抗性水平明显增长，特别是对杀灭菊酯的抗性已达较高水平。使用杀灭菊酯对敏感棉蚜连续选择百次，棉蚜对杀灭菊酯抗性上升１３９２．６７倍（浸渍法测定），并表现对久效磷和氧化乐果有３—４倍的正交互抗性。对４个不同抗性品系棉蚜的实验种群生命表分析表明，杀灭菊酯抗性棉蚜的适合度并不降低，抗性棉蚜的繁殖力不表现降低趋势。利用棉田常用８种有机磷、菊酯类和脒类农药的单剂及混剂测定了对高抗棉蚜的毒力水平，ＤＤＶＰ表现对高抗杀灭菊酯棉蚜有较强毒力；脒类和菊酯类农药混配有显著的增效作用，但与ＤＤＶＰ混用则有拮抗作用。
he resistance level of cotton aphid Aphis gossypii to fenvalerate, omethoateand monocrotophos in Henan cotton growing areas was investigated during 1988 to1990 and the result showed that there was a rapid increase of resistance to thesethree pesticides, especially to fenvalerate. A susceptible strain of the aphid wastreated for eight times with fenvalerate in the laboratory, the selection resulted inthe increase of resistance level to 1393 fold and there was cross resistance of 2 to 4fold to monocrotophos and omethoate. The life tables of experimental populationsof four strains of different resistance levels were analyzed and the result indicatedthat there was no disadvantageous influence for resistance level of fenvalerate to thefitness of cotton aphids. Bioassays were carried out on the aphids resistant to fenvalerate with pyrethroids, organophosphates and amidines. The result showed thatDDVP had a high toxicity, the mixtures of amidines and pyrethroids could have sig-nificant synergism, but antogonism was found with the mixture containing DDVP.
出处
《昆虫学报》
CAS
CSCD
北大核心
1994年第2期137-144,共8页
Acta Entomologica Sinica
关键词
棉蚜
杀灭菊酯
抗药性
抗性品系
Aphis gossypii-fenvalerate-intrinsic rate of natural increase-insecticide resistance -synergism
