Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
권호 표지

Morphological Development of Egg and Larvae of Koreocobitis naktongensis (Cobitidae)

멸종위기에 처한 얼룩새코미꾸리 Koreocobitis naktongensis (Cobitidae)의 난 발생 및 자치어 형태 발달

  • Song, Ha-Yoon (Department of Marine Biotechnology, Soonchunhyang University) ;
  • Yang, Hyun (Institute of Biological Diversity Research) ;
  • Cho, Eun-Mi (Department of Biology, Soonchunhyang University) ;
  • Shin, Hyunchur (Department of Biology, Soonchunhyang University) ;
  • Bang, In-Chul (Department of Marine Biotechnology, Soonchunhyang University)
  • 송하윤 (순천향대학교 해양생명공학과) ;
  • 양현 (생물다양성연구소) ;
  • 조은미 (순천향대학교 생물학과) ;
  • 신현철 (순천향대학교 생물학과) ;
  • 방인철 (순천향대학교 해양생명공학과)
  • Received : 2009.11.23
  • Accepted : 2009.12.26
  • Published : 2009.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

The egg development and early life history of the Korean endangered fish Koreocobitis naktongensis (Cobitidae) were investigated. Eggs from the females were obtained by injecting 10 IU/g of human chorionic gonadotropin and inseminated with sperm by the dry method in the laboratory. The fertilized eggs were 1.0~1.2 mm in diameter and had no oil globules. The embryo began to hatch about 38 hrs after fertilization under water temperature of $20{\pm}1^{\circ}C$. The newly-hatched larvae were 2.6~2.8 mm in total length, and their mouth and anus were not yet opened. Seven days after hatching, the postlarvae were 4.5~5.2 mm in total length, and their yolk sacs were completely absorbed. They entered the juvenile stage when all fin-rays were formed at 50 days after hatching, and their total lengths were 21~27 mm.

멸종위기 담수어류인 얼룩새코미꾸리 Koreocobitis naktongensis의 난 발생 과정 및 자치어 형태 발달을 조사하였다. 인간 융모성 성선자극호르몬(HCG)을 10 IU/g의 농도로 암컷의 복강에 주사하여 성숙란을 얻었으며, 건식법으로 정자와 수정시켰다. 수정란의 난경은 1.0~1.2 mm로 유구는 존재하지 않았다. 배체는 수온 $20{\pm}1^{\circ}C$에서 수정 38시간 후부터 부화하기 시작하였다. 부화 직후 자어의 전장은 2.5~2.8 mm로 입과 항문은 아직 열리지 않았다. 부화 후 7일째 자어는 전장 4.5~5.2 mm로 난황은 완전히 흡수되었다. 부화 후 50일째 모든 지느러미가 완성되는 치어기로 이행하였고, 이때의 전장은 21~27 mm였다.

Keywords

Acknowledgement

Supported by : 환경부

References

  1. 김익수∙박종영. 2002. 한국의 민물고기. 교학사, pp. 204-207.
  2. 김익수∙안정현∙김병직. 2002. 한국산 새코미꾸리속 Koreocobitis 어류의 골학적 연구. 한국어류학회지, 14: 19-28.
  3. 변화근. 2007. 내린천에 서식하는 새코미꾸리 Koreocobitis rotundicaudata (Cobitidae)의 생태. 한국어류학회지, 19: 299-305.
  4. Blaxter, J.H.S. 1974. The Early Life History of Fish. Spring-Verlag, Berlin, 765pp.
  5. Kim, D.S., J.H. Kim and I.S. Park. 1992. Induced and multiple spawnings by human chorionic gonadotropin injection of the loach, Misgurnus mizolepis (Teleostomi; Cobitidae). J. Aquacult., 5: 109-115. (in Korean)
  6. Kim, I.S. and E.H. Lee. 1995. Studies on early embryonic development of Niwaella multifasciata (Pisces; Cobitidae). Korean J. of Limnnol., 28: 455-462. (in Korean)
  7. Kim, I.S., J.Y. Park and T.T. Nalbant. 2000. A New Species of Koreocobitis from Korea with a redescription of K. rotundicaudata. Korean J. Ichthyol., 12: 89-94.
  8. Kim, Y.U., Y.S. Park and D.S. Kim. 1987. Development of eggs, larvae and juveniles of loach, Misgurnus mizolepis Gunther. Bull. Korean Fish. Soc., 20: 16-23. (in Korean)
  9. Ko, M.H., J.Y. Park and I.S. Kim. 2009. Development of eggs and early life history of Iksookimia longicorpa (Pisces: Cobitidae) from Nakdong river of Korea. Korean J. Ichthyol., 21: 15-22. (in Korean)
  10. Nalbant, T.T. 2002. The tribe cobitini: a monophyletic assemblage. In: International Conference: Loaches of the Genus Cobitis and Related Genera. Programme & Book of Abstracts, Olszytyn, Poland, Sep. 9-13, 2002, p. 51.
  11. Okada, Y. 1959. Studies on the fresh water fishes of Japan. J. Fac. Fish Mie Pref. Univ., 4: 533-568.
  12. Okada, Y. and R. Seishi. 1937. Morphological and ecological study on the larvae and juveniles of freshwater fishes in Japan. (VIII) Cobitis biwae Jordan & Snyder. Bull. Fish. Res., 32: 549-554. (in Japanese)
  13. Shimizu, T., H. Sakai and N. Mizuno. 1998. Embryonic and larval development of a Japanese spinous loach, Cobitis takatsuensis. Ichthyol. Res., 45: 377-384. https://doi.org/10.1007/BF02725190
  14. Song, H.Y., W.J. Kim., W.O. Lee and I.C. Bang. 2008. Morphological development of egg and larvae of Iksookimia choii (Cobitidae). Korean J. of Limnol., 41: 104-110. (in Korean)
  15. Suzuki, R. 1966. Artificial spawning and early development of the loach, Cobitis delicate Niwa. Bull. Freshwater Fish. Res. Lab., 15: 175-188.
  16. Uchida, K. 1939. The fishes of Tyosen. Part 1. Nematognathi, Eventognathi. Bull. Fish. Exp. Sat. Gov. Gener. Tyosen. 6, 458pp. (in Japanese)