한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제47권5호
  • /
  • Pages.597-602
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  • 2014
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  • 0374-8111(pISSN)
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  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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절식, 수온 및 유속이 극동산 뱀장어(Anguilla japonica) 렙토세팔루스의 변태 유도에 미치는 영향

Effects of Starvation, Water Temperature, and Water Flow on the Metamorphosis of Leptocephalus of Japanese Eel Anguilla japonica

  • 김대중 (국립수산과학원 전략연구단) ;
  • 이남실 (국립수산과학원 전략연구단) ;
  • 김경길 (국립수산과학원 전략연구단) ;
  • 장대수 (국립수산과학원 전략연구단)
  • Kim, Dae-Jung (New Strategy Research Center, National Fisheries Research and Development Institute) ;
  • Lee, Nam-Sil (New Strategy Research Center, National Fisheries Research and Development Institute) ;
  • Kim, Kyung-Kil (New Strategy Research Center, National Fisheries Research and Development Institute) ;
  • Chang, Dae-Soo (New Strategy Research Center, National Fisheries Research and Development Institute)
  • 투고 : 2014.08.06
  • 심사 : 2014.09.22
  • 발행 : 2014.10.31
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초록

We determined the effects of starvation, water temperature, and water flow on the onset of metamorphosis in leptocephali of the Japanese eel Anguilla japonica. Leptocephali larger than 50 mm (ca. 200 days old) were reared in 10-L tanks under different feeding, water temperature, and water flow regimes. Fasted leptocephali metamorphosed earlier and faster than did the fed ones. Metamorphosis was faster in the high water flow tank (1.2 L/min) than in the tank with flow at 0.6 L/min. The duration of metamorphosis was slightly shorter at $26^{\circ}C$ than at $23^{\circ}C$. To conclude, starvation induced the metamorphosis of artificially produced leptocephali larger than 50 mm TL. Increased water flow and water temperature both appear to induce and shorten metamorphosis.

키워드

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