不同光周期下草地贪夜蛾两性生命表的比较  

Comparison of bisexual life tables of Spodoptera frugiperda in different photoperiods

作　　者：孟令贺 江幸福[1] 李平 夏吉星 张同强 程云霞[1] 张蕾[1] MENG Linghe;JIANG Xingfu;LI Ping;XIA Jixing;ZHANG Tongqiang;CHENG Yunxia;ZHANG Lei(State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Crop Biological Disaster Comprehensive Management, Ministry of Education, Nanjing 210095, China)

机构地区：[1]植物病虫害生物学国家重点实验室,中国农业科学院植物保护研究所,北京100193 [2]南京农业大学植物保护学院,农作物生物灾害综合治理教育部重点实验室,南京210095

出　　处：《植物保护》2022年第3期63-73,共11页Plant Protection

基　　金：国家重点研发计划(2019YFD0300101);国家自然科学基金(31871951);国家绿肥产业技术体系(CARS-22)。

摘　　要：为了阐明光周期对草地贪夜蛾生长发育和生殖能力的影响,在25℃条件下,设置5个光周期(L∥D=16 h∥8 h、L∥D=14 h∥10 h、L∥D=12 h∥12 h、L∥D=10 h∥14 h和L∥D=8 h∥16 h)测定不同光周期条件下草地贪夜蛾的生长发育参数和生殖参数并建立两性生命表。结果表明,L∥D=12 h∥12 h时草地贪夜蛾的幼虫历期(17.53 d)和产卵前期(5.73 d)最长,L∥D=16 h∥8 h时幼虫历期(15.12 d)和产卵前期(4.18 d)最短。各发育阶段存活率在L∥D=16 h∥8 h时最高,在L∥D=12 h∥12 h和L∥D=10 h∥14 h时最低。产卵整齐度(PFO)在L∥D=10 h∥14 h时最大(2.82 d),在L∥D=14 h∥10 h最小(1.42 d)。L∥D=14 h∥10 h时成虫的产卵量(1950.64粒)、产卵历期(7.48 d)以及交配次数(3.55次)和交配率(95.25%)均高于其余光周期。L∥D=16 h∥8 h和L∥D=14 h∥10 h时净增殖率、内禀增长率和周限增长率均高于其余光周期。本文的结果表明,长光照条件下草地贪夜蛾的生殖能力和发育速度均高于短光照。In order to elucidate the effect of photoperiod on the growth and reproductive capacity of the fall armyworm,under the conditions of 25℃,five photoperiods(L∥D=16 h∥8 h,L∥D=14 h∥10 h,L∥D=12 h∥12 h,L∥D=10 h∥14 h and L∥D=8 h∥16 h)were set to determine the growth parameters and reproductive parameters under different photoperiods,and the bisexual life table was established.The results showed that L∥D=12 h∥12 h had the longest larval duration(17.53 d)and the pre-oviposition duration(5.73 d),while L∥D=16 h∥8 h had the shortest larval duration(15.12 d)and the pre-oviposition duration(4.18 d).The survival rate was the highest at L∥D=16 h∥8 h,and the lowest at L∥D=12 h∥12 h and L∥D=10 h∥14 h.PFO(period of first oviposition)was the highest at L∥D=10 h∥14 h(2.82 d)and the lowest at L∥D=14 h∥10 h(1.42 d).The number of oviposition(1950 eggs),duration of oviposition(7.48 d),mating frequency(3.55 times)and mating rate(95.25%)of the adults at L∥D=14 h∥10 h were higher than those at the other photoperiods.L∥D=16 h∥8 h and L∥D=14 h∥10 h resulted in higher increase rates of net,intrinsic and finite growth than other photoperiods.The results of this study suggested that the reproductive capacity and developmental rate of the fall armyworm under long photoperiods were higher than those under short photoperiods.

关 键 词：草地贪夜蛾 光周期 两性生命表 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治]