Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1337
Título: Sexual dimorphism and allometry of external morphology in Oreochromis mossambicus
Autor: Oliveira, Rui Filipe
Almada, Vítor Carvalho
Palavras-chave: Sexual dimorphism
Growth allometry
Cichlid biology
Sexual selection
Data: 1995
Editora: Blackwell Publishing
Citação: Journal of Fish Biology, 46 (6), 1055-1064
Resumo: Sexual dimorphism in growth of conventional morphometric characters was investigated in juveniles and young adults (size range: 31 to 91 mm) of Oreochromis mossambicus. A closely associated set of traits was identified that shows sexually dimorphic growth, which was positively allometric in the males. These traits correspond to two different morphological complexes: jaw structure and anal/dorsal fins. The best sex discriminators among this set of traits were premaxilla width, anal fin height and snout length. These findings may be explained in terms of intra- and inter-sexual selection acting together and favouring males with strong and large mouths and high dorsal and anal fins, traits that are important in agonistic displays (jaw and fins), fighting and nest digging (jaw).
Peer review: yes
URI: http://hdl.handle.net/10400.12/1337
ISSN: 0022-1112
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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