卵和蛹短时高温对草地贪夜蛾生长发育的影响 Click here to download the full text Citation：张红梅,王燕,尹艳琼,李向永,陈福寿,谌爱东.卵和蛹短时高温对草地贪夜蛾生长发育的影响.Journal of Plant Protection,2020,47(4):831-838 Hits: Download times: Author Name Affiliation E-mail ZHANG Hongmei  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    WANG Yan  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    YIN Yanqiong  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    Li Xiangyong  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    CHEN Fushou  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China  chenfsh36@163.com  CHEN Aidong  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China  chenad68@163.com  中文摘要:为明确草地贪夜蛾Spodoptera frugiperda卵和蛹经短时高温处理对其生长发育的影响，将草地贪夜蛾卵和蛹在34、38、42、46℃高温下分别处理2、4、6 h后，测定短时高温下草地贪夜蛾卵的孵化率、不同虫态的发育历期、蛹的羽化率和雌成虫及其子代的繁殖力等指标。结果表明：随着温度升高和高温持续时间延长卵的孵化率逐渐降低，卵在38℃及以上处理6 h或高温46℃处理2 h以上孵化率显著降低；46℃处理6 h的孵化率最低为12.21%，幼虫不能成活；在42℃处理4 h以上和46℃处理2 h以上卵的发育历期延长，与对照差异显著，幼虫的发育历期显著短于对照，蛹的发育历期与对照比无显著差异；38℃处理6 h、42℃处理6 h成虫的产卵量显著低于对照。短时高温处理蛹后，雌蛹和雄蛹在46℃处理2~6 h后羽化率分别为0~15.00%和0~6.75%，均显著低于对照，雌蛹在42、46℃下的羽化率高于雄蛹，蛹在38℃处理6 h和42℃处理2 h以上后羽化的成虫产卵量较低，为121.25~186.75粒。表明高温38℃以上持续6 h或42℃以上持续2 h以上草地贪夜蛾种群生长会受到抑制。 中文关键词:草地贪夜蛾  短时高温  卵期  蛹期  孵化率  羽化率  繁殖力   Effects of short-term high temperature in egg and pupal stages on the growth and development of fall armyworm Spodoptera frugiperda Author Name Affiliation E-mail ZHANG Hongmei  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    WANG Yan  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    YIN Yanqiong  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    Li Xiangyong  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China    CHEN Fushou  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China  chenfsh36@163.com  CHEN Aidong  Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan Province, China  chenad68@163.com  Abstract:In order to find out the influence of short-term high temperature on the growth and development of fall armyworm Spodoptera frugiperda at egg and pupa stages, the eggs and pupae were treated at 34, 38, 42 and 46℃ for 2, 4 and 6 h, respectively, and the effects of short-time high temperature on the egg hatching rate, developmental durations of different stages, pupa emergence rate and reproduction were determined. The results showed that the hatching rate of eggs gradually decreased with increasing temperature and duration of high temperature; the hatchability of eggs at a temperature above 38℃ for 6 h or at 46℃ for more than 2 h was significantly inhibited: the lowest hatching rate was 12.21% at 46℃ for 6 h, and the larvae could not survive. The egg stage was prolonged at 42℃ for more than 4 h and 46℃ for more than 2 h, and there were significant differences from the control group. The larval stage was significantly lower than the control group. There was no significant difference in pupa stage. The eggs developed to adult at 38℃ and 42℃ for 6 h, and the number of eggs laid by adults was significantly lower than that of control. The emergence rates of female and male pupae were 0-15.00% and 0-6.75%, respectively, at 46℃ for 2, 4 and 6 h under short-term high temperature treatment, significantly lower than the control. The emergence rate of female pupae was higher than that of male pupae at 42℃ and 46℃. After the emerged, the number of eggs laid by adults was lower (121.25-186.75) at 38℃ for 6 h and 42℃ for more than 2 h. It indicated that the population of S. frugiperda was suppressed at a high temperature above 38℃ for 6 h or 42℃ for 2 h. keywords:Spodoptera frugiperda  short-term high temperature  egg stage  pupal stage  hatching rate  emergence rate  fecundity View Full Text  View/Add Comment  Download reader

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