| 短时高温暴露对草地贪夜蛾存活及生殖的影响 |
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| 引用本文： | 李祥瑞#,陈智勇#,巴吐西,殷新田,朱 勋,张云慧.短时高温暴露对草地贪夜蛾存活及生殖的影响[J].植物保护,2022,48(1):90-96. |
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| 作者姓名： | 李祥瑞# 陈智勇# 巴吐西 殷新田 朱 勋 张云慧 |
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| 作者单位： | 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 |
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| 基金项目： | 国家重点研发计划（2019YFD0300102）；国家自然科学基金（31972260）；国家现代农业（小麦）产业技术体系（CARS-03）；中国农业科学院重大任务联合攻关（CAAS-ZDRW202007） |
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| 摘 要： | 本文研究短时高温暴露对草地贪夜蛾存活和生殖的影响,为其夏季的预测预报及综合防治提供技术支持.分别以卵、不同龄期幼虫、蛹、成虫作为研究对象进行不同时间高温暴露处理,研究高温暴露处理后幼虫和成虫的成活率,幼虫的化蛹率、羽化率、蛹重以及成虫的生殖能力.结果 表明.37℃对卵的孵化率无显著影响,40℃暴露4h卵的孵化率显著降低...
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| 关 键 词： | 草地贪夜蛾 短时高温 成活率 繁殖力 |
| 收稿时间： | 2020/12/7 0:00:00 |
| 修稿时间： | 2021/1/15 0:00:00 |
Effects of short term heat stress on the survival and fecundity of Spodoptera frugiperda (Lepidoptera: Noctuidae) |
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| LI Xiangrui#,CHEN Zhiyong#,Batuxi,YIN Xintian,ZHU Xun,ZHANG Yunhui.Effects of short term heat stress on the survival and fecundity of Spodoptera frugiperda (Lepidoptera: Noctuidae)[J].Plant Protection,2022,48(1):90-96. |
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| Authors: | LI Xiangrui# CHEN Zhiyong# Batuxi YIN Xintian ZHU Xun ZHANG Yunhui |
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| Institution: | State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China |
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| Abstract: | The objective of this study is to clarify the effects of short-term exposure to high temperature on the survival and fecundity of the fall armyworm,Spodoptera frugiperda,and provide a technical support for the prediction of the occurrence and integrated control of this pest in summer.The eggs,larvae of different stages,pupae and adults were treated under the condition of short-time high temperature,respectively,and their effects on the survival rate,pupation rate,eclosion rate,pupal weight and reproduction were determined.The results showed that the 37℃had no significant effect on the hatching rate of eggs;the hatchability of eggs treated at 40℃for 4 h was significantly inhibited;the hatching rate of eggs exposed to 45℃for 3 h was 7.29%,and eggs exposed to 45℃for more than 4 h could not hatch.Exposure to 37-40℃had no significant effect on the survival rate of pupae,but continuous treatment for five days with daily exposure to 43℃for 4 h significantly reduced the survival rate of pupae.The survival rate of pupae treated at 46℃for 4 h every day in continued five days was 61.29%.The survival rate,pupation rate,eclosion rate,adult life span and fecundity were less affected by high-temperature exposure at 37-43℃;however,the pupal weight gradually decreased with increasing exposure temperature and larvae age;the pupal weights of the 5th-and 6th-instar larvae treated at 37℃for 4 h significantly reduced,and the pupal weight of the 6th-instar larvae exposed to 46℃for 2 h decreased to 111.54 mg,which was 54.30%of the control(205.42 mg).The hatching rates of eggs were significantly reduced when the adult stage was treated at 40℃for four hours per day in three days;the hatching rate of eggs gradually decreased with increasing temperature and duration of high-temperature treatment,and the hatching rate of eggs treated for 4 h at 46℃decreased to 12.34%.These results indicated that S.frugiperda had a strong heat tolerance,and the inhibition effect of high temperature on its population had a time lag effect to some degree. |
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| Keywords: | Spodoptera frugiperda short term high temperature survival rate fecundity |
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