温度对草地贪夜蛾生长发育及繁殖的影响  

Effects of temperatures on the development and reproduction of fall armyworm (Spodoptera frugiperda Smith)

作　　者：鲁智慧 和淑琪[1] 严乃胜[1] 赵文杰 姚万福 陈亚平 杨通 姜玉英[3] 桂富荣[1,4] LU Zhihui;HE Shuqi;YAN Naisheng;ZHAO Wenjie;YAO Wanfu;CHEN Yaping;YANG Tong;JIANG Yuying;GUI Furong(State Key Laboratory of Conservation and Utilization of Biological Resources of Yunnan,College of Plant Protection,Yunnan Agricultural University,Kunming 650201,China;Yuanjiang County Plant Protection and plant QuarantineStation,Yuanjiang 653300,China;National Agro-Tech Extension and Service Center,Beijing 100125,China;Yunnan Plateau Characteristic Agricultural Industry Research Institute,Kunming 650201,China)

机构地区：[1]云南农业大学植物保护学院,云南省生物资源保护与利用国家重点实验室,昆明650201 [2]云南省元江县植保植检站,元江653300 [3]全国农业技术推广服务中心,北京100125 [4]云南省高原特色农业产业研究院,昆明650201

出　　处：《植物保护》2019年第5期27-31,53,共6页Plant Protection

基　　金：农业农村部种植业管理司和全国农业技术推广服务中心草地贪夜蛾应急调研指导项目;中央财政2019年外来入侵物种防控项目

摘　　要：草地贪夜蛾是新近入侵我国的重大农业害虫,为了弄清其入侵生物学特性,为草地贪夜蛾的监测预警及综合治理提供理论依据,本研究在光照培养箱内设置6个温度(17、22、27、32、37、42℃)饲养草地贪夜蛾,测定其不同阶段的存活率、发育历期、体重及繁殖力等,探究温度对草地贪夜蛾生长发育及繁殖的影响。结果表明,草地贪夜蛾在42℃条件下仅能短暂存活,在17~32℃范围内可正常生长发育,其幼虫期、蛹期及世代历期均随着温度的升高而缩短,17℃条件下世代历期和幼虫期分别为(58.73±1.46)d和(21.79±1.03)d,37℃条件下则分别仅为(22.57±0.84)d和(11.12±0.31)d。成虫寿命在17~27℃范围内差异不大,之后随温度升高而缩短,37℃下成虫寿命仅为27℃下的1/4左右,且在该温度下成虫无法正常羽化,雌成虫不产卵。17~32℃下雌成虫产卵前期随温度的升高而缩短,产卵期则随温度升高而有所延长,平均单雌产卵量在27℃下最高,为(565.50±143.40)粒。说明温度升高会导致草地贪夜蛾发育历期缩短,年发生世代数增加,幼虫取食量增大,对作物的为害加重。To clarify the biological characteristics and provide theoretical evidence for monitoring,early warning and comprehensive management of Spodoptera frugiperda,a new invasive species in China,the species was reared at six different temperatures(17,22,27,32,37,42℃)in artificial climate incubators,and their survival rate,developmental duration and body weight at different stages,as well as the female adult fecundity were recorded and analyzed.The results showed that the larvae of S.frugiperda could develop a complete generation from 17℃to 32℃.The developmental duration of larvae,pupae and the whole generation period was shortened with the increase of temperature,which were(58.73±1.46)d and(21.79±1.03)d,respectively at 17℃,and only(22.57±0.84)d and(11.12±0.31)d respectively at 37℃.The adult longevities reared at temperatures from 17℃to 27℃showed no significant difference,however,it was decreased significantly with the increase of temperatures from 32℃to 42℃.The adult longevity at 37℃was only about 1/4 of that at 27℃,and the pupae at 37℃could not emerge normally into adults,and the female adults did not lay eggs.The pre-oviposition period of female adults shortened with the increase of temperature,while the oviposition period prolonged with the increase of temperature at 17-32℃.The average fecundity was the highest at 27℃as(565.50±143.40)eggs per female.The results indicated that with the increase of temperature at certain range,the developmental period of S.frugiperda shortened,and the annual generation number increased,which would result in aggravation of crop damage by the invasive species.

关 键 词：草地贪夜蛾 温度 发育历期 产卵量 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治]