Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (20): 108-112.doi: 10.11924/j.issn.1000-6850.casb2020-0541

Special Issue: 植物保护 马铃薯

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The Sublethal Effects of Avermectin and Avermectin·imidacloprid on Myzus persicae (Sulzer) in Potato

Zhang Yanlei(), Song Weihu, Lin Chunyan, Liu Changzhong()   

  1. College of Plant Protection, Gansu Agricultural University/Gansu Provincial Crop and Pest Bioengineering Laboratory, Lanzhou 730070
  • Received:2020-10-12 Revised:2021-01-18 Online:2021-07-15 Published:2021-08-06
  • Contact: Liu Changzhong E-mail:486897723@qq.com;liuchzh@gsau.edu.cn

Abstract:

To clarify the interference effects of abamectin and avermectin·imidacloprid at different sublethal doses on the F0 adult and F1 generation of Myzus persicae (Sulzer) in potato, the life tables of their populations at the LC10, LC25, LC40 doses were constructed in the laboratory, and the effects of different sublethal doses on the fecundity, growth, development and population parameter of M. persicae were analyzed. The results showed that after treated with abamectin and avermectin·imidacloprid LC10, LC25 and LC40, the mean fecundity of aphids was significantly less than the control, and the mean longevity was also significantly shorter than the control. The mean fecundity of aphids and the mean longevity with avermectin·imidacloprid LC40 group were the lowest (9.52) and the shortest (8.07 days). Compared with the control, the nymph period of F1 generation was significantly prolonged and the adult aphid stage was significantly shortened. The effects on population parameters of F1 generation were as follows: the net reproductive rate (Ro), intrinsic rate of increase (rm) and finite rate of increase (λ) were all significantly reduced, and the doubling time (Dt) was significantly prolonged. These results suggests that avermectin and avermectin·imidacloprid at different sublethal doses could significantly inhibit the mean longevity and mean fecundity per female of parental generation adult aphid and effectively control F1 generation pest resurgence simultaneously.

Key words: avermectin, avermectin·imidacloprid, Myzus persicae (Sulzer) in potato, sublethal effect, life table parameters

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