高效氯氰菊酯和啶虫脒对螟黄赤眼蜂繁殖的亚致死效应  

Sublethal effects ofacetamiprid and beta-cypermethrin on reproduction of Trichogramma chilonis

作　　者：王坤[1,2] 王甦[2] 宋丽芳[1] 张帆[2] 李永丹[1] 

机构地区：[1]中国农业大学农学与生物技术学院昆虫学系,北京100194 [2]北京市农林科学院植物保护环境保护研究所,北京100097

出　　处：《环境昆虫学报》2014年第6期933-938,共6页Journal of Environmental Entomology

基　　金：国家重点基础研究发展计划资助项目(2013CB127600);北京市农林科学院科技创新能力建设专项(KJCX20140101);北京市科技计划项目(D141100000914000)

摘　　要：螟黄赤眼蜂Trichogramma chilonis是害虫生物防治中一种重要的卵寄生蜂,其在防治害虫的同时,也会受到田间杀虫剂的影响。本研究选择高效氯氰菊酯和啶虫脒亚致死剂量,以两性生命表法计算种群参数,揭示了这两种药剂亚致死剂量对该种群生长、繁殖的影响。试验测定了高效氯氰菊酯和啶虫脒对螟黄赤眼蜂的亚致死剂量LC20值分别为0.119和1.091 mg/L。研究结果显示,经亚致死浓度LC20的啶虫脒处理后,螟黄赤眼蜂的寄生卵量显著低于对照(P<0.05),寿命(1.17 d)显著缩短,种群参数(内禀增长率rm、周限增长率λ、净生殖力R0和世代平均历期T)均低于对照,其中净生殖力R0(27.573)显著低于对照(P<0.05)。经亚致死剂量LC20的高效氯氰菊酯处理后,螟黄赤眼蜂的单雌产卵量显著高于对照(P<0.05)。试验结果表明高效氯氰菊酯的亚致死剂量对螟黄赤眼蜂的增殖有一定的刺激作用,而亚致死剂量的啶虫脒则会影响螟黄赤眼蜂的寄生能力,在螟黄赤眼蜂盛发期,田间施用啶虫脒时,应注意其残留量对螟黄赤眼蜂的影响。Trichogramma chilonis is an important egg parasitoid in pest biocontrol, the insecticide can effect the T. chilonis meanwhile control pest. In the study, the sublethal concentraion of beta - cypermethrin and acetamiprid were selected to reveal the effect on development and fecundity of T. chilonis by using two - sex life table. The results show that the sublethal concentration （LC20） of beta - cypermethrin and acetamiprid were 0. 119 and 1. 091 mg/L, respectively. The number of parasitic egg was significantly lower as compared with control （P 〈 0.05 ）, the lifespan of T. chilonis was significantly decreased than control. In addition, life table parameters （the intrinsic rate of increase rm, the finite rate of increase A, the net reproductive rate R0 and mean generation time T） were lower than their respective controls, furthermore, the R0 was significantly lower as compared with control. The number of eggs per female of T. chilonis was significantly higher than control after treated with sublethal concentration of beta - cypermethrin. The results demonstrated that sublethal concentration of beta - cypermethrin stimulatedthe reproduction of T. chilonis, however, sublethal concentration of acetamiprid effected the parasitic ability. Furthermore, the effect of residue acetamiprid on T. chilonis was considered when apply it in the field during the emergence period of this instect.

关 键 词：螟黄赤眼蜂 啶虫脒 高效氯氰菊酯 两性生命表 亚致死效应 

分 类 号：Q965.9[生物学—昆虫学] S476[农业科学—农业昆虫与害虫防治]