Determination of sexual dimorphism of African snakehead (Parachanna obscura): morphometric and meristic parameters, weight-length relationship and condition factor

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AuteurVODOUNNOU, D S JUSTE VITAL
AuteurKPOGUE, D N S
AuteurAKPO, Y
AuteurLAGNIKA, MOISSOU
AuteurFIOGBE, EMILE DIDIER
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2017
ResumeArtificial reproduction of fishes requires knowledge of their sexual dimorphism. African snakehead, Parachanna obscura, sexual dimorphism determination is difficult trough urogenital orifice examination. The aim of this study was to determine the sexual dimorphism of P. obscura using the parameters such as morphometric parameters, meristic parameters, weight-length relationship and condition factor. For the study, 30 specimens of P. obscura were collected from a swamp in Sakete a southeastern district of Benin. The fish weighed between 117 g and 251 g and their length were between 24.40 cm and 32.20 cm. At the end of this study, the different fins ray number were not significantly different (P>0.05). There was no significant difference among male and female fish (P>0.05) in total length, standard length, head length, snout length, snout width, head circumference and body circumference. Tail length had a significantly difference between male and female (P<0.05). The weight-length relationship indicated an allometric growth for the males and an isometric growth for the females. Significant difference was observed between male and female in condition factor (P<0.05). The male condition factor was the double of female condition factor. Condition factor, tail length and weight-length can be used for P. obscura sexual dimorphism determination.
Autre identifiantBECDB-6432
URIhttps://dspace.uac.bj/handle/123456789/5863
Languefr
Fait partie deInt. J. Biol. Chem. Sci.
SujetParachanna obscura
Sujetsexual dimorphism
Sujetcondition factor
Sujetweight-length relationship
TitreDetermination of sexual dimorphism of African snakehead (Parachanna obscura): morphometric and meristic parameters, weight-length relationship and condition factor
TypeArticle

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