Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1326
Título: Male display characters, gonadal maturation and androgens in the cichlid fish Oreochromis mossambicus
Autor: Oliveira, Rui Filipe
Almada, Vítor Carvalho
Palavras-chave: Androgens
Cichlids
Maturation
Reproductive behaviour
Secondary sex characters
Data: 1999
Editora: Instituto Superior de Psicologia Aplicada
Citação: Acta Ethologica, 2, 67-70
Resumo: The relationships between gonadal maturation and the expression of behavioral and morphological display characters in O. mossambicus was investigated and the possible role of androgens in the coordination of this process was evaluated using genital papilla size as a bioassay for androgen levels. Morphological and behavioral displaying characters were found to be correlated among themselves. The sexually dimorphic characters were correlated with gonad maturation and androgen levels, but not with the gonado-somatic index. Gonad maturation and androgen levels were closely related. Territoriality and other behavioral variables involved in reproduction were also correlated with gonad maturation and androgen levels. These data suggest that in O. mossambicus androgens play a mediating role between gonadal maturation and the expression of display characters, both morphological and behavioral.
Peer review: yes
URI: http://hdl.handle.net/10400.12/1326
ISSN: 0873-9749
Aparece nas colecções:UIE-E - Artigos em revistas nacionais

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