Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Studies on the Artificial Seedling Production of Geoduck Clam, Panope japonica I. Spawning Induction and Hatching

코끼리조개의 인공종묘생산에 관한 연구 I. 산란유발 및 부화

  • Lee, Chae-Sung (Wast Sea Fisheries Research, Institute, National Fisheries Research & Development Institute) ;
  • Rho, Sum (Department of Aquaculture, Cheju National University) ;
  • Park, Young-Je (Kangnung Hatchery, National Fisheries Research and Development Institute)
  • 이채성 (국립수산진흥원 서해수산연구소) ;
  • 노섬 (제주대학교 증식학과) ;
  • 박영제 (국립수산진흥원 강릉수산종묘배양장)
  • Published : 1997.05.01
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Abstract

In order to developed the techniques for artificial seedling production of geoduck clam, Panope japonica, various stimulution for spawning induction and hatching condition were studied. Spawning induction by the air day or UV-irradiation stimulus were not effective. Water temperature stimulus was responsed 15.0~25.0% in May and 10.0% in June. But spawning induction by the gonad incision was highest with 15.0~45.0%. Ammonium hydroxide (NH4OH) stimulus adding in seawater were responsed 15.0% at 8/1000N~10/1000N, and ammonium hyhroxide solution injected in the gonads were responsed 5.0~10.0% at 5/100N~7/100N. The highest fertilization and hatching rate at various water temperature were ranged 74.5~89.2% in 11~$17^{\circ}C, \;84.3~89.5%\;in\;8~14^{\circ}C$, respectively. the highest fertilization rate and hatching rate in various salinity were ranged 72.5~88.5% in 25~$35tetperthousand$, 82.7~86.9% in 30~$35tetperthousand$, respectively. The optimum water temperature and salinity for fertilization and hatching to the 11~14$^{\circ}C$ and 30~$35tetperthousand$, respectively.

강원연안에 서식하는 코끼리조개의 인공종묘생산 기술개발을 목적으로 산란유발 방법 및 수정과 부화를 위한 수온과 염분농도의 최적조건 등을 연구한 결과를 요약하면 다음과 같다. 코끼리조개의 산란유발은 간출자극과 자외선조사해수자극에서는 전혀 반응이 없었다. 수온자극에서는 5월에 15.0-25.0%의 반응을 보였고, 6월에는 10.0%의 반응을 보였다. 그러나 생식소를 절개한 것은 15.0-45.0%로 가장 높은 반응을 보였다. NH 하(4) OH 용액을 해수에 첨가하는 자극에서는 8/1000N-10/1000N에서 15.0%의 반응율을, 그리고 NH 하(4) OH 용액을 생식소에 주사하는 자극은 5/100N-7/100N에서 5.0-10.0%의 반응율을 보였다. 코끼리조개의 수온에 따른 수정율은 수온 11-17$^{\circ}C$범위에서 74.2-89.2%였고, 부화율은 수온 8-$14^{\circ}C$에서 84.3-90.5%로 가장 높았다. 염분 농도에 의한 수정율은 염분 25-$35tetperthousand$범위에서 72.5-88.5%, 부화율은 염분 30-$35tetperthousand$에서 82.7-86.9%였다. 수정과 부화를 위한 수온과 염분농도의 최적조건은 수온 11-$14^{\circ}C$, 염분농도 30-$35tetperthousand$로 나타났다.

Keywords

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