Histological Study of Oculocutaneous Albinism in the Korean Bitterling, Acheilognathus signifer (Osteichthyes; Cyprinidae)

묵납자루, Acheilognathus signifer의 Oculocutaneous Albinism에 대한 조직학적 연구

  • Oh, Min-Ki (Faculty of Biological Science, and Institute for Biodiversity Research, College of Natural Sciences Chonbuk National University) ;
  • Park, Jong-Young (Faculty of Biological Science, and Institute for Biodiversity Research, College of Natural Sciences Chonbuk National University) ;
  • You, Min-Jeong (Faculty of Biological Science, and Institute for Biodiversity Research, College of Natural Sciences Chonbuk National University) ;
  • Kang, Eon-Jong (Inland Aquaculture Research Institute, NFRDI) ;
  • Yang, Sang-Geun (Inland Aquaculture Research Institute, NFRDI) ;
  • Kim, Eung-Oh (Inland Aquaculture Research Institute, NFRDI) ;
  • Jo, Yong-Cheol (Inland Aquaculture Research Institute, NFRDI) ;
  • Park, In-Seok (Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Maritime University) ;
  • Kim, Chi-Hong (Inland Fisheries Ecological Research Institute, NFRDI) ;
  • Ishinabe, Toshihiro (Nature museum and Institute)
  • 오민기 (전북대학교 자연과학대학 생물과학부.생물다양성연구소) ;
  • 박종영 (전북대학교 자연과학대학 생물과학부. 생물다양성연구소) ;
  • 유민정 (전북대학교 자연과학대학 생물과학부. 생물다양성연구소) ;
  • 강언종 (국립수산과학원 남부내수면연구소) ;
  • 양상근 (국립수산과학원 남부내수면연구소) ;
  • 김응오 (국립수산과학원 남부내수면연구소) ;
  • 조용철 (국립수산과학원 남부내수면연구소) ;
  • 박인석 (한국해양대학교 해양과학부) ;
  • 김치홍 (국립수산과학원 내수면생태연구소) ;
  • Received : 2008.09.03
  • Accepted : 2008.09.22
  • Published : 2008.09.30

Abstract

The Korean bitterling, Acheilognathus signifer (Osteichthyes Cyprinidae), is an endemic and endangered species in Korea. During developmental stages, a small number of oculocutaneous albinism (with colorless body and eyeballs) were observed in the species. In order to investigate histological differences between normal and albinic bitterling, the dorsal skin and choroid-retina of the eyes were taken. The skin and eyes of normal and albino bitterling were similar in structure except for the presence or density of pigment cells. In normal bitterling, the epidermal melanocytes and dermal melanophores were abundantly developed in both the skin and epidermis of the eyes. But in the albino, the dorsal skin had few melanins, and the pigment cells over the choroid-retina pigment epithelium and iris of the eye were very small.

한국고유종이자 멸종위기종인 묵납자루, Acheilognathus signifer의 종보존을 위한 인공발생 및 사육이 진행되는 동안 눈과 피부 전반에 걸쳐 색소의 발현이 결핍된 oculocutaneous albinism 개체가 출현하였다. 정상과 알비노간의 형태적 차이 여부를 알아보기 위해 등 피부와 안구의 맥락막-망막 조직을 적출하여 조직학적 분석을 실시하였다. 그 결과 일반적인 형태는 서로 차이가 없었으나 멜라닌색소의 발현에서 현저한 차이를 보였다. 정상 묵납자루는 등 피부의 표피와 진피, 맥락막-망막색소상피층 및 홍채에 많은 수의 멜라닌세포와 흑색소포가 존재한 반면, 알비노의 등 피부에서는 색소가 거의 존재하지 않았고 맥락막-망막색소상피층과 홍채에서는 매우 제한된 분포를 보였다.

Keywords

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