한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제46권3호
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  • Pages.287-295
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  • 2013
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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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쥐노래미(Hexagrammos otakii)자치어의 먹이와 수온에 따른 성장 및 에너지 수지

Growth and Energy Budgets of Greenling Hexagrammos otakii Larvae and Juveniles Reared on Different Diets and Temperatures

  • 박준우 (MEITEC 엔지니어링) ;
  • 권오남 (강릉원주대학교 해양생물연구교육센터) ;
  • 박기영 (강릉원주대학교 해양자원육성학과)
  • Park, Jun Woo (MEITEC Engineering) ;
  • Kwon, O-Nam (Marine Biology Center for Research and Education, Gangneung-Wonju National University) ;
  • Park, Kie-Young (Department of Marine Bioscience, Gangneung-Wonju National University)
  • 투고 : 2010.12.02
  • 심사 : 2013.06.03
  • 발행 : 2013.06.30
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초록

The growth, respiration, ingestion, and ecological efficiencies of Hexagrammos otakii larvae and juveniles reared on different diets and temperatures were estimated. A factorial experiment using two diets [non-enriched hatched Artemia nauplii (NEA) and enriched Artemia nauplii (EA)] crossed with two temperatures [natural seawater temperature (NT, $5.1-8.5^{\circ}C$) and heated seawater (HT, $13{\pm}0.5^{\circ}C$)] was conducted to investigate growth and energy budgets of Hexagrammos otakii larvae and juveniles. The energy used by larvae and juveniles for 6 weeks was calculated using data on ingestion, growth, respiration, excretion, and egestion. In the NT trials, the energy used for growth by larvae and juveniles was 0.121 and 0.129 Kcal in the NEA and EA treatments, respectively. Assimilation efficiency at NT were 78.0% and 80.2% in the NEA and EA trials, respectively. Gross growth efficiency ($K_1$) were 60.5% and 62.3% and net growth efficiency ($K_2$) was 77.56% and 77.71% in the NEA and EA trials, respectively. In the HT trials, the energy used for growth by juveniles was 0.189 and 0.212 Kcal in the NEA and EA trials, respectively. Assimilation efficiency at HT was 86.4% and 95.1% in the NEA and EA trials, respectively. Values of $K_1$ and $K_2$ at HT were 69.5% and 80.43%, respectively, in the NEA trials, and 73.9% and 77.66%, respectively, in the EA trials. These results suggest that enriched Artemia nauplii and higher temperatures ($13{\pm}0.5^{\circ}C$) are effective for rearing larvae and juveniles of H. otakii.

키워드

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