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KMID : 0364219900330030260
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Korean Journal of Zoology
1990 Volume.33 No. 3 p.260 ~ p.265
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Sexual Dimorphism in Eightspine Stickleback, Pungitius sinensis: Gasterosteidae
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Chae Byung-Soo
Yang Hong-Jun
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Abstract
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Pungitius sinensis specimens were collected from the Namdae River and Chusu River drained into Sea of Japan, and their morphological characters were investigated to determine if this species shows sexual dimorphism. The ratio of the head length to the body length revealed marked sexual difference; the head length in males was longer than in females. The snout length and body depth at anus showed a tendency to be larger in males than in females. This dimorphism seems to be related to breeding habits. The ethological significance of the larger head of males was discussed.
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KEYWORD
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Pungitius sinensis , Sexual dimorphism
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