温度对棉大卷叶螟生长发育和繁殖的影响  

Effects of temperature on development and reproduction of Sylepta derogata Fabricius(Lepidoptera:Pyralidae).

作　　者：吴建辉[1] 黄振[1] 任顺祥[1] 周慧平[1] 

机构地区：[1]华南农业大学生物防治教育部工程研究中心

出　　处：《应用生态学报》2008年第6期1325-1330,共6页Chinese Journal of Applied Ecology

基　　金：国家重点基础研究发展规划项目(2006CB102005);国家“十五”科技攻关项目(2004BA509B0604);广东省自然科学基金资助项目(010312)

摘　　要：本文利用生命表方法评价了温度对棉大卷叶螟生长发育和繁殖的影响．结果表明：在17℃-26℃温度范围内，棉大卷叶螟的发育历期随温度升高而显著缩短；当温度超过32℃时。其发育历期延长．棉大卷叶螟的世代起点发育温度为12．08℃，有效积温为436．2日·度．在17℃～35℃温度范围内，棉大卷叶螟的存活率在26℃下最高，其他温度下的存活率随温度的升高或降低而降低．在17℃～35℃之间，棉大卷叶螟实验种群的内禀增长率、世代净增殖率、周限增长率分别在29、26和32℃下最大，其值分别为0．1268、415．65和1．185．世代平均历期随着温度的升高而缩短，在17℃下最长，为89．11d；在35℃下最短，为28．68d．By using life table parameters, the effects of seven constant temperature regimes （17, 20, 23, 26, 29, 32 and 35 ℃ ） on the development and reproduction of Sylepta derogata was investigated. The results indicated that the durations of egg-laying, larval, pupal, and adult stages of S. derogata shortened significantly when the temperature increased from 17 ℃ to 26 ℃, but prolonged at 32 ℃ and 35 ℃. The lower development threshold temperature of S. derogata at its all development stages was 12. 08 ℃, and the effective accumulative temperature was 436. 2 degreedays. The survival rates of all immature stages were the highest at 26 ℃, and would be decreased when the temperature was above or under 26 ℃. The innate capacity to increase （ rm ） , net reproductive rate （R0）, and finite rate of increase （ λ ） reached the maximum at 29, 26 and 32 ℃, with the values being 0. 1268, 415.65 and 1. 185, respectively. The mean generation time （T） shortened with increasing temperature, with the maximum and minimum values of 89. 11 and 28.68 days at 17 ℃ and 35 ℃, respectively.

关 键 词：生长发育 生命表 棉大卷叶螟 繁殖 温度 

分 类 号：S433[农业科学—农业昆虫与害虫防治]