Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
권호 표지

Histological Study on Cutaneous Albinism of Korean Slender Gudgeon Squalidus gracilis majimae from Korea

긴몰개 Squalidus gracilis majimae의 피부백색증에 대한 조직학적 연구

  • Lee, Yong-Joo (Jeonju National University of Eduaction) ;
  • Park, Jong-Young (Faculty of Biological Sciences and Institute for Biodiversity Research, College of Natural Sciences, Chonbuk National University) ;
  • Oh, Min-Ki (Faculty of Biological Sciences and Institute for Biodiversity Research, College of Natural Sciences, Chonbuk National University)
  • 이용주 (전주교육대학교 과학교육학과) ;
  • 박종영 (전북대학교 자연과학대학 생물과학부.생물다양성연구소) ;
  • 오민기 (전북대학교 자연과학대학 생물과학부.생물다양성연구소)
  • Received : 2009.08.24
  • Accepted : 2009.09.25
  • Published : 2009.09.30
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Abstract

Histological examination of an individual of the Korean slender gudgeon Squalidus gracilis majimae having cutaneous albinism produced rarely in the wild was made and compared with a normal individual. The external body of the albino was colorless, differing from the normal individual, which has dense brownish black spots over its body surface. To make it clear through histological study, we observed eight skin regions: dorsal, lateral, ventral, upper caudal peduncle, lower caudal peduncle, dorsal fin, anal fin, and the eyes. These regional skins were the same in fundamental structure between albinic and normal gudgeon, but there were significant differences in distribution and development of pigment cells (melanins). In the normal gudgeon, the pigment cells were well developed over the regional skins except on the skin from the ventral region. However, it was confirmed in the albino that the pigment cells were vestigial over the upper regions of the eye and body but absent in the ventral region, lower caudal peduncle, and anal fin.

긴몰개 Squalidus gracilis majimae 백색증 개체가 자연에서 발견되어 조직학적 분석을 통해 정상개체와의 차이를 비교하였다. 백색증 개체는 정상 개체에 비해 체색의 발현이 이루어지지 않았다. 등, 체측, 배, 미병부 상부, 미병부 하부, 등 뒷지느러미 및 안구조직에 대한 조직형태에서는 정상과 백색증 개체간 차이가 없었으나 멜라닌 색소의 분포 및 발현량에서 차이를 보였다. 정상 개체의 경우, 멜라닌 색소는 배쪽을 제외한 모든 부위에서 잘 발달한 모습을 볼 수 있었다. 그러나 백색증 개체의 경우, 멜라닌 색소는 눈과 몸통의 위쪽부위에서 매우 희미하게 관찰되었고, 아래쪽 부위(배, 미병부 하부, 뒷지느러미)에서는 전혀 발견되지 않았다. 이러한 멜라닌 색소의 분포는 빛과 연관이 있을 것으로 추측되었다.

Keywords

References

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