Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Geographic Variation and Distribution of Nuptial Color Patterns in Korean Chub, Zacco koreanus (Cyprinidae, Pisces)

참갈겨니, Zacco koreanus (잉어과, 어강)의 혼인색의 지리적 변이와 분포

  • 채병수 (국립공원연구원) ;
  • 윤희남 (국립환경과학원 생태계조사단)
  • Received : 2006.03.27
  • Accepted : 2006.05.24
  • Published : 2006.06.30
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Abstract

In the investigation of geographic variations on the Zacco koreanus distributed widely in southern Korean Peninsula, it was found that there were distinct differences in the nuptial coloration among geographic populations. These color variations were presence of red band on anterior margin of pectoral fin and color patterns of dorsal fin. On the basis of those color variations three color types were recognized in Z. koreanus, that is, HK, NS and NE types. HK types were distributed mainly in Han and Geum River, NS types in Nakdong and Seomjin River, and NE types in Nakdong River and small streams on the east coast. It was noted ecologically and taxonomically that these three types were well separated geographically and two types of them, i.e., NS and NE types cohabit in the Nakdong River and shown a tendency of microhabitat segregation between them.

한반도 남부의 하천수계에 널리 분포하는 Zacco koreanus를 대상으로 혼인색의 지리적 변이를 조사한 결과 지리적 개체군 사이에 뚜렷한 차이가 있음을 발견하였다. 즉 가슴지느러미 전단에 붉은띠의 유무와 등지느러미의 색깔에 큰 차이가 있었다. 이 색깔의 변이에 의하여 Z. koreanus 내에 색깔이 서로 다른 3가지 유형, 즉 HK, NS 그리고 NE형을 구분하였다. HK형은 한강과 금강에, NS형은 낙동강과 섬진강에, 그리고 NE형은 낙동강과 동해안의 하천에 주로 분포하였다. 이들 3가지 형은 지리적으로 잘 구분되며 그 중 NS형과 NE형은 낙동강에서 공서하는 곳이 많고 미세서식처가 분리되는 양상을 나타내므로 생태학적 및 분류학적으로 주목된다.

Keywords

References

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