中国农业科学2009，Vol.42Issue(12)：4242-4247,6.DOI:10.3864/j.issn.0578-1752.2009.12.015
亚致死剂量杀螨剂对刺足根螨休眠体形成与解除的影响
Effects of Acaricides at Sublethal Dose on Formation and Completion of Hypopi of Rhizoglyphus echinopus
摘要
Abstract
[Objective] Hypopus of Rhizoglyphus echinopus has good resistance to the adverse environmental conditions and acaricide.In order to understand the effects of acaricides at sublethal dose on hypopus formation and completion,a series of experiments were conducted.[Method] The dry residual film method was applied to test the toxicity of six acaricides to protonymphs and hypopi of Rhizoglyphus echinopus.The effects of sublethal doses (LC_(20)) of abamectin and hexythiazox on hypopus formation and completion were also studied.[Result]The toxity line of abamectin EC and hexythiazox EC on protonymphs were y=1.2986+0.7549x and y=1.2866+1.1189x,the toxity line of abamectin EC and hexythiazox EC on hypopus were y=1.2986+0.7549xand y=-2.3442+1.3936x .The hypopus formation was not significantly affected by 1.8% abamectin EC and 5% hexythiazox EC (P＞0.05),however,only a few hypopi treated by two acaricides could reach the tritonymph stage in 49 days,13.44% and 3.11%,respectively.[Conclusion]Sublethal doses (LC_(20)) of abamectin and hexythiazox have a little influce on formation of hypopi of Rhizoglyphus echinopus,but have a great influnce on its completion.关键词
杀螨剂/刺足根螨/毒力/亚致死剂量/休眠体Key words
acaricide/Rhizoglyphus echinopus/toxicity/sub-lethal dose/hypopus分类
农业科技引用本文复制引用
张曼丽,张善学,蔡德江,范青海..亚致死剂量杀螨剂对刺足根螨休眠体形成与解除的影响[J].中国农业科学,2009,42(12):4242-4247,6.基金项目
国家自然科学基金项目(30570220) （30570220）
