Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
권호 표지

Occurrence of a Natural Intergeneric Hybrid between Rhodeus pseudosericeus and Acheilognathus signifer (Pisces: Cyprinidae) from the Namhangang (river), Korea

한강납줄개 Rhodeus pseudosericeus와 묵납자루 Acheilognathus signifer (Pisces: Cyprinidae)의 속간 자연 잡종 출현

  • Kim, Hyeong Su (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University) ;
  • Yun, Seung Woon (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University) ;
  • Ko, Jae Geun (National Institute of Ecology) ;
  • Park, Jong Young (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University)
  • 김형수 (전북대학교 자연과학대학 생물학과, 부설 생물다양성연구소) ;
  • 윤승운 (전북대학교 자연과학대학 생물학과, 부설 생물다양성연구소) ;
  • 고재근 (국립생태원) ;
  • 박종영 (전북대학교 자연과학대학 생물학과, 부설 생물다양성연구소)
  • Received : 2014.08.21
  • Accepted : 2014.09.22
  • Published : 2014.09.30
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Abstract

A natural intergeneric hybrid between Rhodeus pseudosericeus and Acheilognathus signifer was collected in their sympatric area, the Jucheongang (stream), the Namhangang (river), Korea. Morphological characters as well as mitochondrial cytochrome b (mt-cyb) gene were investigated to confirm the natural hybrid origin. In the comparison of morphological characters, the natural hybrid appeared to have intermediate characters between two parental species in several key characters such as the band of dorsal fins, the color pattern of body, and the body spot and stripe. Also, the collected specimen had an incomplete lateral line with a large number of pored scales. In analysis of mt-cyb gene, it revealed that the maternal species of the natural hybrid appeared to be R. pseudosericeus due to their 100% sequence identity. Thus, such results gave convincing evidence for the occurrence of a natural intergeneric hybrid between Rhodeus pseudosericeus and Acheilognathus signifer.

한강납줄개 Rhodeus pseudosericeus와 묵납자루 Acheilognathus signifer의 속간 잡종으로 추정되는 개체를 한강 수계의 주천강에서 채집하였다. 잡종의 기원을 확인하기 위하여 형태적 특징과 mitochondrial cytochrome b (mt-cyb) gene을 조사하였다. 형태 형질 분석에서, 조사된 표본의 등지느러미의 반문, 체색, 체측 반점과 종대 무늬 등은 두 부모종의 중간적 형질을 보였다. 또한, 잡종 개체의 측선은 불완전하였고 측선유공린수는 부모종의 중간값을 보였다. mt-cyb gene 분석 결과 잡종 개체는 한강납줄개와 염기서열이 100% 일치하여 한강납줄개가 모계임이 밝혀졌다. 따라서 두 자료의 분석 결과 본 연구에서 조사한 개체는 한강납줄개와 묵납자루의 속간 자연 잡종 개체임을 확인하였다.

Keywords

References

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