Algal blooms decrease care but increase egg survival in a fish with paternal care

M Järvenpää, Kai Lindström

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    7 Citeringar (Scopus)

    Sammanfattning

    Human-induced eutrophication, resulting in algal blooms and increased water turbidity, is an alarming problem in aquatic systems. Here, we experimentally tested the impact of algal turbidity on parental care, egg fanning, and time in the nest, in the sand goby, Pomatoschistus minutus, a fish with uniparental male care. We allowed males to care for their eggs in either clear water or water made turbid by planktonic algae. In the early brood cycle, males fanned their eggs less in turbid than in clear water, but this difference disappeared later. Despite decreased care, egg survival was higher in turbid conditions, indicating that early fanning may partly be redundant for egg survival and perhaps used more as courtship. Males also spent more time out of their nest in turbid water, perhaps as a means to encounter additional females under conditions of low visibility.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)2023–2028
    Antal sidor6
    TidskriftBehavioral Ecology and Sociobiology
    Volym65
    Utgåva11
    DOI
    StatusPublicerad - 2011
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • Eutrophication
    • Fanning
    • Mating effort
    • Pomatoschistus minutus
    • Reproductive success
    • Sexual selection
    • Turbidity

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