短时高温暴露对莲草直胸跳甲生殖特性的影响  

Effects of brief high temperature exposure on reproductive characteristics of Agasicles hygrophila (Coleoptera:Chrysomelidae)

作　　者：赵鑫[1,2] 傅建炜[1,3] 万方浩[1] 郭建英[1] 王进军 

机构地区：[1]中国农业科学院植物保护研究所农业植物病虫害生物学国家重点实验室,北京100094 [2]西南大学植物保护学院,重庆400715 [3]福建省农业科学院植物保护研究所,福州350013

出　　处：《昆虫学报》2009年第10期1110-1114,共5页Acta Entomologica Sinica

基　　金：国家"973"计划项目(2009CB119200);国家科技部支撑计划项目(2006BAD08A18)

摘　　要：以莲草直胸跳甲Agasicles hygrophila Selman & Vogt为对象,测定了在不同高温(37,39,41,43,45±0.5℃)下暴露1h后,莲草直胸跳甲成虫寿命、产卵前期、产卵量及后代存活力等生殖适应性指标的差异。结果表明:(1)莲草直胸跳甲成虫寿命随暴露温度的升高而降低,25℃恒温条件下,雌成虫寿命平均为37.4d,而45℃高温暴露1h后,雌虫寿命仅为20.0d;(2)莲草直胸跳甲雌虫的产卵前期随暴露温度升高而显著延长,25℃恒温条件下雌虫产卵前期平均为4.1d;39℃高温暴露1h后产卵前期延长至4.8d,45℃高温暴露1h后延长至7.3d;(3)短时高温暴露显著降低莲草直胸跳甲的单雌产卵量,25℃恒温条件下单雌产卵量平均为965.1粒,39℃暴露1h后,其产卵量为638.7粒,45℃暴露1h后低于260粒;(4)短时高温暴露对莲草直胸跳甲后代存活能力有显著的影响,随着温度的升高,F1代卵的孵化率从95.4%降低至89.2%,F1代成虫的羽化率从87.0%下降到71.3%。以上结果表明,短时高温暴露导致莲草直胸跳甲生殖适应性下降。In this study,the longevity,reproduction and survival rate of Agasicles hygrophila adults under different high temperatures (37,39,41,43 and 45±0.5℃) for 1 h were studied. The results showed that: (1) Adult longevity of A. hygrophila species was decreased with the temperature increasing. It was 37.4 d on average at 25℃ (control). However,it dropped to 20.0 d after exposure at 45℃ for 1 h. (2) Pre-oviposition period of female A. hygrophila prolonged significantly after exposure to high temperatures over 39℃ ...

关 键 词：莲草直胸跳甲 空心莲子草 高温暴露 生殖力 寿命 羽化率 生物防治 

分 类 号：S451[农业科学—植物保护]