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Impact of hot events at different developmental stages of a moth: the closer to adult stage, the less reproductive output

文献类型： 外文期刊

作者： Zhang, Wei 1 ; Chang, Xiang-Qian 2 ; Hoffmann, Ary A. 3 ; Zhang, Shu 2 ; Ma, Chun-Sen 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, Climate Change Biol Res Grp, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China

2.Hubei Acad Agr Sci, Inst Plant Protect Soil Sci Insect Pests & Weeds, Hubei Prov Key Lab Crop Dis, Wuhan, Peoples R China

3.Univ Melbourne, Sch BioSci, Inst Bio21, Pest & Environm Adaptat Res Grp, Melbourne, Vic 3010, Australia

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2015 年 5 卷

页码：

收录情况： SCI

摘要： Hot days in summer (involving a few hours at particularly high temperatures) are expected to become more common under climate change. How such events at different life stages affect survival and reproduction remains unclear in most organisms. Here, we investigated how an exposure to 40 degrees C at different life stages in the global insect pest, Plutella xylostella, affects immediate survival, subsequent survival and reproductive output. First-instar larvae showed the lowest survival under heat stress, whereas 3rd-instar larvae were relatively heat resistant. Heat exposure at the 1st-instar or egg stage did not influence subsequent maturation success, while exposure at the 3rd-instar larval stage did have an effect. We found that heat stress at developmental stages closer to adult stage caused greater detrimental effects on reproduction than heat stress experienced at earlier life stages. The effects of hot events on insect populations can therefore depend critically on the timing of the event relative to an organism's life-cycle.

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