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ISSN : 2287-8327

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Vol.31 No.2
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Sexual Dimorphism in Morphometric Characteristics of Korean Chub Zacco koreanus (Pisces, Cyprinidae)

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2008, v.31 no.2, pp.107-113

Changik Zhang (Pukyong National University)


Paul Olin (University of California)
Changik, Z. , & Paul, O. (2008). Sexual Dimorphism in Morphometric Characteristics of Korean Chub Zacco koreanus (Pisces, Cyprinidae). Journal of Ecology and Environment, 31(2), 107-113.
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Abstract

We measured a set of 37 morphological characteristics in 97 specimens of adult Korean chub, Zacco koreanus, trapped in the Milyang River, Korea, in May and October of 2005. Twelve out of thirty-seven morphometric measurements were significantly different between the sexes. In particular, both the pectoral fin length and the direct distance between the insertion of the dorsal fin and the insertion of the anal fin were highly significant (p < 0.001). This sexual dimorphism may reflect the outcome of sexual selection in this species.

keywords
Morphometric characteristics, Sexual dimorphism, Zacco koreanus

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