尼氏钝绥螨抗有机磷自然种群的研究  

STUDY ON NATIVE ORGANOPHOSPHORUS-RESISTANT POPULATION OF AMBLYSEIUS NICHOLSI EHARA ET LEE

作　　者：杜桐源[1] 田肇东[1] 熊锦君[1] 卢知平 

机构地区：[1]广东省昆虫研究所 [2]江西省赣洲市农业技术中心

出　　处：《昆虫天敌》1991年第2期61-65,共5页Natural Enemies of Insects

基　　金：3870435号国家自然科学基金资助。

摘　　要：我们从1989年以来调查柑园中植绥螨自然种群抗药性,一年来调查研究三个地方的四个种群,发现江西赣州的尼氏钝绥螨自然种群对亚胺硫磷、水胺硫磷和乐果的 LC50分别达1299.6ppm、875.3ppm 和529.2ppm,比尼氏钝绥螨敏感种群分别高59.1倍,31.3倍和21.3倍。赣州种群的酯酶同工酶电泳分析发现抗药性的 E_2带特别宽且色深,与毒性测定结果相应。且在赣州当地果园的虫口密度相当高,平均达0.36头/叶,比同期桔全爪螨的0.28头/叶还高。赣州种群与广州种群能自然交配繁殖后代,说明尚未达到种和亚种级分化,可用助迁手段来使其他地方尼氏钝绥螨提高抗药性。An organ ophosphorus-resistant strain of native Amblyseius nicholsi was disc- overed.The LC_(50) values of Ganzhou strain of Amblyseius nicholsi(from Jiangxi Province)are 1299.6,875.3 and 529.2 ppm to Phosmet,Optunal and Dimethoate respeetively.And compared with the LC_(50) of susceptible strain,the resistant le- vel are 59.3,31.3 and 21.3 fold to these insecticides respectively.The results of esterase isocnzymie electrophoresis showed that E_2 esterase band which is respo- nsible for the OP-resistance is wider and darker in Ganzhou strain of A.nicholsi than in other strains,This result is parallel to the results of toxicological assay. The population density of A.nicholsi is higher than that of citrus red mite Panonychus cirri in the local orchard.

关 键 词：尼氏钝绥螨 有机磷 抗性种群 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]