益達胺（Imidacloprid）對豌豆蚜（Acyrthosiphon pisum）之亞致死效應的研究

Research for Sublethal Effect of Imidacloprid on Pea Aphid Acrythosiphon pisum

陳明昭(M. Z. Chen) ； 洪荔湄(L. M. Hung) ； 楊永裕(Y. Y. Yang)

《植物保護學會會刊》 54卷4期 (2012/12) Pp. 103-112

https://doi.org/10.6715/PPB.201212_54(4).0002

並列摘要

Use of insecticides not only directly kill pest insects through acute toxicity, but also has sublethal effects on pest behavior or physiology. Therefore, understanding the sublethal effect of insecticides is important for rational application of insecticides. The effects of imidacloprid on development, reproduction, longevity, and wing formation of pea aphid Acyrthosiphon pisum were analyzed in this study. Firstly, the toxicity of imidacloprid against A. pisum was tested to evaluate LC50 and three sublethal concentrations (LC15, LC30, LC40). When pea aphids were exposed to leaves dipped in four concentrations of imidacloprid, we did not find effects on fecundity of P and F1 adults. In addition, only exposure to imidacloprid at LC50 significantly shortens the developmental time of F1 nymphs. LC50 could induce more alate aphids than that of control in the P generation. In order to compare the response of alate and apterous aphids to imidacloprid, we analyze the sublethal effect of LC50 on developmental time, longevity and fecundity of offspring in these two types aphid. The results showed the developmental time of the F1 nymph of apterous aphids were significantly longer than that of alate aphids. On the other hand, LC50 application resulted in markedly lower average fecundity of F1 in apterous female compared with alate female, but there were no differences in the longevity of F1 adult between alate and apterous aphids.

並列關鍵字

sublethal effect ； pea aphid ； imidacloprid