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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Järvenpää M, Lindström K
Förläggare: SPRINGER
Publiceringsår: 2011
Tidskrift: Behavioral Ecology and Sociobiology
Tidskriftsakronym: BEHAV ECOL SOCIOBIOL
Volym: 65
Nummer: 11
Artikelns första sida, sidnummer: 2023
Artikelns sista sida, sidnummer: 2028
Antal sidor: 6
ISSN: 0340-5443


Abstrakt

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.


Nyckelord

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

Senast uppdaterad 2020-19-01 vid 03:32