Impact of hot events at different developmental stages of a moth: the closer to adult stage, the less reproductive output.
Impact of hot events at different developmental stages of a moth: the closer to adult stage, the less reproductive output.
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热事件对飞蛾不同发育阶段的影响：越接近成虫阶段，繁殖产出越少
DOI：
10.1038/srep10436
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发表时间：
2015-05-22
影响因子：
4.6
通讯作者：
Ma CS
中科院分区：
文献类型：
--
作者：
Zhang W;Chang XQ;Hoffmann A;Zhang S;Ma CS
在气候变化的情况下，预计夏季炎热的日子（包括几个小时的特别高温）将变得更加常见。在大多数生物体中，不同生命阶段的这些事件如何影响生存和繁殖仍不清楚。在这里，我们研究了全球性害虫小菜蛾（Plutella xylostella）在不同生命阶段暴露于40 °C如何影响即时生存，随后的生存和生殖输出。1龄幼虫在热胁迫下的存活率最低，而3龄幼虫相对耐热。热暴露在第1龄或卵阶段没有影响随后的成熟成功，而暴露在第3龄幼虫阶段确实有影响。我们发现，与生命早期阶段经历的热应激相比，接近成体阶段的发育阶段的热应激对生殖造成的不利影响更大。因此，热事件对昆虫种群的影响主要取决于事件相对于生物体生命周期的时间。
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 °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.