칼납자루, Acheilognathus koreensis (어강, 잉어목) 자어의 표피돌기에 관한 조직학적 연구

Histological Study of the Minute Tubercles on Larval Skin Surface of a Korean Endemic Bitterling, Acheilognathus koreensis (Pisces, Cyprinidae), with Its Larval Growth

  • 김치홍 (국립수산과학원 내수면생태연구소) ;
  • 박종영 (전북대학교 생물과학부.전북대학교 부설 다양성연구소) ;
  • 박민경 (전북대학교 생물과학부.전북대학교 부설 다양성연구소) ;
  • 강언종 (국립수산과학원 내수면양식연구소) ;
  • 김종화 (국립수산과학원 내수면생태연구소)
  • Kim, Chi-Hong (Inland Fisheries Ecological Research Institute, NFRDI) ;
  • Park, Jong-Young (Faculty of Biological Sciences and Institute for Biodiversity Research, Chonbuk National University) ;
  • Park, Min-Kyong (Faculty of Biological Sciences and Institute for Biodiversity Research, Chonbuk National University) ;
  • Kang, Eon-Jong (Inland Fisheries Aquaculture Research Institute) ;
  • Kim, Jong-Hwa (Inland Fisheries Ecological Research Institute, NFRDI)
  • 투고 : 2006.07.09
  • 심사 : 2006.08.30
  • 발행 : 2006.09.30

초록

한국 고유종인 칼납자루의 자어시기 표피에서 돌출되어 나타나는 미세돌기의 형태 및 분포를 자어의 발생단계에 따라 조직학적으로 조사한 결과 자어의 표피는 소형의 호염기성이면서 편평한 기저세포로 구성된 얇은 한 층의 세포층으로 구성되어 있다. 이러한 표피층은 발생이 진행되면서 기저세포 위에 커다란 상피세포)로 구성된 2층이 형성된다. 이러한 커다란 상피세포는 단세포로서 비늘모양으로 난황낭 앞부분과 난황 부분에서 출현하여, 탄수화물테스트에 어떠한 반응을 보이지 않았다. 또한 자어의 몸통과 미병부에서는 흔적적인 상피세포가 존재한다. 이러한 두 종류의 상피세들은 미세돌기로 알려져 있다. 이러한 세포들은 부화 직후부터 부화 8일까지 수와 크기가 증가하지만 자어가 발달함에 따라 점점 감소를 반복하다 유영시기와 난황이 완전 흡수되는 시기인 부화 31일에 더 이상 존재하지 않는다.

Morphology and distribution of the minute tubercles projected on the skin surface of larvae with its development was observed in the Korean bitterling, Acheilognathus koreensis, known as an endemic freshwater fish. The epidermis of the larvae consisted of a thin single layer, having smaller basophilic flat or round-flattened basal cells. In between the single cell layer, two or three layers were added and they consisted mainly of large epidermal cells just above basal cells. These large unicellular epidermal cells were mainly scale-shaped and rarely cone-shaped, and do not give any histochemical tests for mucosubstances. They were present in anterior region and most region of yolk sac. Whereas, vestigial epidermal cells were distributed in the body region and the caudal fin-fold region. These two kinds of epidermal cells, called minute tubercles, increased in number and height from Just to 8 days after hatching, but as the larvae develop gradually, they became to reduce. At 31days after hatching of free swimming stage and absolute absorption stage of the yolk sac, the minute tubercles did not exist on the whole skin of the larvae.

키워드

과제정보

연구 과제 주관 기관 : NFRDI

참고문헌

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