交配持续时间对茄28星瓢虫生殖适应性的影响  

Effects of Copulation Duration on Fitness Consequences of Lady Beetles,Henosepilachna vigintloctopunctata Fabricius

作　　者：周康念[1] 张爵龙 邓礼[1] 孙计拓[1] 刘兴平[1] 

机构地区：[1]江西农业大学园林与艺术学院,江西南昌330045

出　　处：《生物灾害科学》2012年第1期40-44,共5页Biological Disaster Science

基　　金：国家自然科学基金项目(31000173);江西农业大学博士启动基金项目(3140)

摘　　要：茄28星瓢虫(Henosepilachna vigintloctopunctata Fabricius)的我国茄科植物上的重要的害虫种类。本文以此虫为材料,研究了该虫的交配起始时间与交配持续时间,以及不同的交配持续时间其产卵量和孵化率的影响。结果表明,该虫的交配起始时间和交配持续时间变化幅度较大,平均分别为(36.61±3.24)min和(49.87±1.06)min,且两者间并不存在明显的相关性。雌虫的产卵量和卵的孵化率与交配持续时间之间呈明显的正相关,表明延长交配时间与雌虫贮存的精子数量相适应。同时,结果还表明,该种类至少需要10 min以上的交配才能导致卵的孵化。The lady beetle,Henosepilachna vigintloctopunctata Fabricius,is a serious phytophagous pest of Solanaceae in China.This paper analyzed the mating latency,copulation duration and the effect of copulation duration on fitness consequences of the lady beetles.The results showed that the latency to copulation and the copulation duration changed to a larger extent and their average values were 36.61±3.24min and 49.87±1.06min,respectively.While there was no correlation between the latency to copulation and the copulation duration.The egg production and the hatching rate of eggs laid by females of H.vigintloctopunctata significantly increased with the increase in mating duration,suggesting prolonged mating duration in response to the volume of sperm stored by females.This result also suggested that a minimum duration of 10 min of mating was probably essential for the fertilization of the eggs of this species.

关 键 词：茄28星瓢虫 交配起始时间 交配持续时间 产卵量 孵化率 

分 类 号：S436.36[农业科学—农业昆虫与害虫防治]