Females increase current reproductive effort when future access to males is uncertain

KU Heubel, Kai Lindström, H Kokko

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    33 Citeringar (Scopus)

    Sammanfattning

    Trade-offs between current and future reproduction shape life histories of organisms, e.g. increased mortality selects for earlier reproductive effort, and mate limitation has been shown to shape male life histories. Here, we show that female life histories respond adaptively to mate limitation. Female common gobies (Pomatoschistus microps) respond to a female-biased operational sex ratio by strongly increasing the size of their first clutch. The plastic response is predicted by a model that assumes that females use the current competitive situation to predict future difficulties of securing a mating. Because female clutch size decisions are much more closely linked to population dynamics than male life-history traits, plastic responses to mate-finding limitations may be an underappreciated force in population dynamics.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)224–227
    Antal sidor4
    TidskriftBiology Letters
    Volym4
    Utgåva2
    DOI
    StatusPublicerad - 2008
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • clutch size
    • female-female competition
    • life history
    • offspring allocation
    • operational sex ratio

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