ISSN : 2287-8327
Sexual Dimorphism in Morphometric Characteristics of Korean Chub Zacco koreanus (Pisces, Cyprinidae)
Changik Zhang (Pukyong National University)
박인석 (한국해양대학교)
나종훈 (부경대학교)
Paul Olin (University of California)
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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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