Species divergence and seasonal succession in rates of mate desertion in closely related Neotropical cichlid fishes

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Lehtonen TK, Wong BBM, Lindström K, Meyer A
Förläggare: SPRINGER
Publiceringsår: 2011
Tidskrift: Behavioral Ecology and Sociobiology
Tidskriftsakronym: BEHAV ECOL SOCIOBIOL
Volym: 65
Nummer: 4
Artikelns första sida, sidnummer: 607
Artikelns sista sida, sidnummer: 612
Antal sidor: 6
ISSN: 0340-5443
eISSN: 1432-0762


Abstrakt

Across animal taxa, exclusive female offspring care has evolved repeatedly from biparental care, suggesting that the latter becomes evolutionarily unstable under certain conditions. Both the attributes of a species and the environment it experiences can help to predict shifts from one particular care mode to another. Nevertheless, factors inducing differences in care strategies among closely related species, or seasonal variation within species, have been subject to surprisingly little empirical testing. Here, we report the results of a field-based study that examined both among and within species variation in mate desertion in five species of closely related Nicaraguan cichlid fish in the genera Amphilophus and Amatitlania. The results show a link between female body size and male involvement in offspring care. Specifically, the larger the species the less often males were found to provide extended care. Furthermore, we found that solitary females became more common towards the end of the breeding season. We discuss the implications of this finding in the context of previous theoretical and empirical contributions regarding the frequency of offspring desertion by males.


Nyckelord

Body size, Lake Apoyo, Lake Xiloa, Mate desertion, Midas cichlid complex, Parental care, Seasonal variation, Species comparison

Senast uppdaterad 2020-23-01 vid 05:06