Abstract:
: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 1(st)-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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Zhang W,Chang XQ,Hoffmann A,Zhang S,Ma CSdoi
10.1038/srep10436subject
Has Abstractpub_date
2015-05-22 00:00:00pages
10436issn
2045-2322pii
srep10436journal_volume
5pub_type
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