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si nong du lv chong ben jia zuo an ke jiang di ya zhou yu mi ming de zhong qun zeng chang ( ying wen )
Author(s): 
Pages: 446-451
Year: Issue:  4
Journal: Acta Entomologica Sinica

Keyword:  亚洲玉米螟氯虫苯甲酰胺亚致死效应生命表参数毒性;
Abstract: 为了探讨氯虫苯甲酰胺对亚洲玉米螟Ostrinia furnacalis(Guenée)的抗性风险评估,为科学使用氯虫苯甲酰胺防治亚洲玉米螟提供理论基础,本研究在实验室条件下采用饲料混毒法测定了新型杀虫剂氯虫苯甲酰胺对亚洲玉米螟的毒力,利用生命表技术研究了氯虫苯甲酰胺对亚洲玉米螟3龄幼虫的亚致死效应。结果表明:氯虫苯甲酰胺对亚洲玉米螟3龄幼虫的LC10,LC40和LC50分别为0.038,0.098和0.123mga.i./L。以氯虫苯甲酰胺LC10和LC40剂量分别处理亚州玉米螟3龄幼虫后,幼虫和蛹的发育历期明显延长,成虫寿命缩短,产卵量也显著降低,但对蛹重(雌:P=0.337,雄:P=0.121)、卵孵化率(P=0.087)和性比(P=0.379)无显著影响。处理种群的净增值率(R0)、内禀增长率(rm)和周限增长率(λ)显著低于对照种群(P<0.0001)。结果提示,氯虫苯甲酰胺的亚致死浓度可降低亚洲玉米螟的种群增长。
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