成虫期温度对稻纵卷叶螟生殖特性的影响  

Effects of temperature on reproduction in the rice leaf roller

作　　者：孙贝贝[1] 张蕾[1] 江幸福[1] 罗礼智[1] 

机构地区：[1]中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京100193

出　　处：《应用昆虫学报》2013年第3期622-628,共7页Chinese Journal of Applied Entomology

基　　金：公益性行业(农业)科研专项(200903051)

摘　　要：温度是影响昆虫生殖的重要环境因子,本文通过成虫期不同日龄低温处理研究了温度对稻纵卷叶螟Cnaphalocrocis medinalis Guenée成虫生殖和寿命的影响。结果表明:羽化后1日龄15℃处理对稻纵卷叶螟雌蛾生殖有显著的促进作用,体现在成虫产卵显著提前,产卵量显著增加,首次产卵历期显著缩短,交配次数显著增加,交配率明显上升,而在其他日龄处理仅导致首次产卵历期显著缩短,对成虫其他生殖指标无显著影响。1日龄10℃处理对稻纵卷叶螟成虫生殖并没有显著影响,但显著缩短成虫的寿命。这些结果表明,1日龄是低温调控稻纵卷叶螟生殖的敏感时期,此时期15℃刺激能显著促进成虫生殖。Temperature is an important factor in insect reproduction. The influence of low temperature on the reproduction and longevity of the rice leaf roller, Cnaphalocrocis medinalis Guen6e was investigated by exposing adults to cold on different days after emergence. The results indicate that only exposure to cold （15℃） a day after emergence significantly accelerated female reproduction and increased the synchrony of first egg-laying, shortened the preoviposition period and the period of first oviposition, and increased total fecundity, mating frequency and mating percentage. However exposure to cold on other days had no significant effect on reproduction except for significantly shortening the period of first oviposition. Furthermore, exposing adults to 10~C for 24 h on the day after emergence had no significant effect on reproduction, but significantly shortened adult longevity. These results suggest that the first day after emergence is a sensitive stage with regard to cold in C. medinalis and that cold stress during this period can be accelerate reproduction.

关 键 词：稻纵卷叶螟 温度 关键时期 产卵前期 产卵量 首次产卵历期 交配 

分 类 号：S435.112.1[农业科学—农业昆虫与害虫防治]