한국어류학회지 (Korean Journal of Ichthyology)

  • 제24권2호
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  • Pages.125-130
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  • 2012
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

민어, Miichthys miiuy의 초기 형태 발달: 지느러미 분화, 두부 계측 및 비늘 도포

Early Morphological Development of the Brown Croaker, Miichthys miiuy (Basilewsky): Fin Differentiation, Head Dimensions, and Squamation

  • 박인석 (한국해양대학교 해양환경.생명과학부) ;
  • 김영자 (한국환경산업기술원) ;
  • 구인본 (한국해양대학교 해양환경.생명과학부) ;
  • 김동수 (부경대학교 해양수산형질전환생물연구소)
  • Park, In-Seok (Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime University) ;
  • Kim, Young-Ja (Korea Environmental Industry & Technology Institute (KEITI)) ;
  • Goo, In-Bon (Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime University) ;
  • Kim, Dong-Soo (Institute of Marine Living Modified Organisms (iMLMO), Pukyoung National University)
  • 투고 : 2012.02.17
  • 심사 : 2012.04.03
  • 발행 : 2012.06.30
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초록

민어, Miichthys miiuy (Basilewsky)에서의 지느러미 분화, 두부 계측 및 비늘 도포 양상의 초기 형태학적 발달을 조사하였다. 부화 후 12일(전장 4.2 mm 미만)에, 어체 주위로 fin-fold의 존재가 관찰되었다. 등지느러미, 뒷지느러미 및 가슴지느러미의 기조 형성은 부화 후 12일에 거의 완전히 이루어진 반면, 지느러미 분절은 부화 후 26일과 29일 사이에 이루어졌다. 꼬리지느러미 중간 기조의 신장은 부화 후 32일에 시작되었으며 부화 후 37일에 현저하였다. 부화 후 68일에 꼬리지느러미가 뾰족해지기 시작하였다(전장 70.7 mm). 비늘의 발달은 전장이 9.1mm(부화 후 28일)일 때 미병의 측선부위로부터 시작되어 결국 아가미덮개 전체를 도포하였다(전장 22.1 mm, 부화 후 44일). 두부 계측치들은 전장이 12 mm 이상(부화 후 30일)에서 거의 안정화되었다.

We describe early morphological development in laboratory-reared specimens of the brown croaker, Miichthys miiuy, in relation to fin differentiation, head dimensions, and squamation. From the yolk sac stage to the flexion larval stage (a period of 12 days following hatching, at which time the larvae were <4.2 mm in total length; TL) we observed the presence of a fin-fold around the body, while the caudal fin appeared rounded and lacked scales. Rays developed in the dorsal, anal, and pectoral fins in a process that was almost complete in larvae 12 days, while ray segmentation occurred between 26 and 29 days of age. Elongation of the middle rays of the caudal fin was initiated at 32 days, and the rays were remarkably elongated by 37 days. By 68 days the caudal fin was lanceolated (50.7 mm TL). Scales began to develop from the midlateral lines of the caudal peduncle at 9.1mm TL (28 days), eventually encompassing the entire operculum (22.1 mm TL; 44 days). The head dimensions were largely stabilized at >12 mm TL (30 day).

키워드

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