Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1315
Título: Fluctuating asymmetries and reproductive success in the the peacock blenny
Autor: Gonçalves, David
Simões, P. C.
Chumbinho, Ana Cláudia Morato
Correia, M. J.
Fagundes, Teresa
Oliveira, Rui Filipe
Palavras-chave: Fluctuating asymmetry
Developmental stability
Salaria pavo
Peacock blenny
Reproductive success
Data: 2002
Editora: Elsevier
Citação: Journal of Fish Biology, 60, 810-820
Resumo: In an investigation of the relationship between reproductive success and fluctuating asymmetry (FA) in the peacock blenny Salaria pavo, FA was measured in four bilaterally paired characters in successful and unsuccessful males during the breeding season. Reproductive success among successful males was assessed by calculating the number of eggs the males were defending. Absolute FA values relative to trait size were high for all characters and it is suggested that this could be a consequence of sub-optimal environmental conditions. Two of the traits presented higher absolute FA values suggesting a lower canalization during ontogeny. No difference in FA between successful and unsuccessful males was found and no relationship between FA and number of eggs among the successful males occurred for any of the measured traits. A composite index of FA, that should better reflect overall developmental competence, was also unrelated to reproductive success. These results indicate that FA is not associated with reproductive success among males of S. pavo. Successful males were larger than unsuccessful males and a strong positive correlation was detected between the body length of the parental males and the number of eggs they had in the nest, even when controlling for the internal nest area. Body size may give males a reproductive advantage by being preferred by females and by having an advantage in male-male competition for nests of higher quality.
Peer review: yes
URI: http://hdl.handle.net/10400.12/1315
ISSN: 0022-1112
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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