摘要
为评价吡虫啉对日本通草蛉Chrysoperla nipponensis（Okamoto）实验种群的亚致死效应,采用浸渍法处理日本通草蛉卵,测定了吡虫啉亚致死剂量LC_（10）、LC_（20）、LC_（30）对日本通草蛉生长发育、繁殖力和生命表参数的影响。结果表明,经吡虫啉亚致死剂量LC_（10）、LC_（20）、LC_（30）处理后,日本通草蛉幼虫发育历期和蛹期分别延长0.86~2.04 d和1.00~2.37 d,平均单头蛹重降低1.16~1.56 mg,羽化率降低6.13%~13.08%;雌虫产卵前期延长0.19~0.51 d,每雌平均产卵量减少17.75~51.64粒,寿命减少1.75~2.84 d;内禀增长力（r_m）、净繁殖率（R_0）和周限增长率（λ）均显著降低,平均世代历期（T）和种群加倍时间（D_t）均显著延长。研究表明,吡虫啉亚致死剂量对日本通草蛉种群的增长具有抑制作用。
To study the sublethal effects of imidacloprid on the experimental population of Chrysoperla nipponensis（Okamoto）,the eggs of C.nipponensis were treated with LC_（10）,LC_（20）,and LC_（30） of imidacloprid by dipping method and the lacewing＇ s development,fertility,and life-table were tested.The results showed that larval duration and pupal duration of C.nipponensis were prolonged by 0.86-2.04 d and 1.00-2.37 d after treated with imidacloprid,respectively.The average pupal weight and emergence rate decreased by 1.16- 1.56 mg and 6.13%- 13.08%,respectively.The pre-oviposition of C.nipponensis was prolonged by 0.19-0.51 d and the fecundity reduced by 17.75-51.64 eggs per female.The average longevity of female adults was shortened by 1.75-2.84 d.The intrinsic rate of increase（r_m）,net reproductive rate（R_0）,and finite rate of increase（λ） were all decreased significantly compared to the control.However,the mean generation time（T） and the population doubling time（D_t） were both prolonged significantly.The results indicated that the sublethal dosage of imidacloprid could decrease the development rate of laboratory populations of C.nipponensis.
出处
《植物保护学报》
CAS
CSCD
北大核心
2016年第6期1014-1019,共6页
Journal of Plant Protection
基金
山西省青年科技研究基金(201601D202074)
国家重点研发计划(2016YFD0201134)
山西省农业科学院博士研究基金(YBSJJ1206)
关键词
日本通草蛉
亚致死效应
吡虫啉
生命表
Chrysoperla nipponensis
sublethal effect
imidacloprid
life-table
