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Publicação
Male display characters, gonadal maturation and androgens in the cichlid fish Oreochromis mossambicus
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Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Androgens Cichlids Maturation Reproductive behaviour Secondary sex characters
Contexto Educativo
Citação
Acta Ethologica, 2, 67-70
Editora
Instituto Superior de Psicologia Aplicada