Effects of Oxygen Consumption in the Giant Grouper Epinephelus lanceolatus by Water Temperature and Photoperiod

수온 및 광조건에 따른 대왕바리 Epinephelus lanceolatus의 산소소비 특성

  • Jeong, Minhwan (Future Aquaculture Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Sang-Duck (Lotte World Aquarium) ;
  • Lim, Han-Kyu (Development of Marine and Fisheries Resources, Mokpo National University) ;
  • Kim, Moon-Jin (Sea Life Busan Aquarium) ;
  • Kim, Bong-Seok (Future Aquaculture Research Center, National Fisheries Research & Development Institute)
  • 정민환 (국립수산과학원 미래양식연구센터) ;
  • 김상덕 (롯데월드 아쿠아리움) ;
  • 임한규 (목포대학교 해양수산자원학과) ;
  • 김문진 (씨-라이프 부산 아쿠아리움) ;
  • 김봉석 (국립수산과학원 미래양식연구센터)
  • Received : 2014.10.07
  • Accepted : 2014.12.15
  • Published : 2014.12.31

Abstract

This study investigated the effects of water temperature and photoperiod on oxygen consumption (OC) in the giant grouper Epinephelus lanceolatus. OC rate in the giant grouper at 17, 22, 27 and $32^{\circ}C$ were $61.7{\pm}0.4$, $72.2{\pm}0.6$, $102.9{\pm}0.8$ and $141.7{\pm}1.0mg\;O_2/kg/h$, respectively, indicating a linear increase in OC with water temperature. Photoperiod was regulated in accordance with the light (06:00~18:00 h, L) and dark (18:00~06:00 h, D) phases of the diel cycle (12L/12D), with a water temperature of at 17, 22, 27 and $32^{\circ}C$. OC rates during the light and dark phases were $62.7{\pm}0.4$, $62.5{\pm}0.3mg\;O_2/kg/h$, respectively, at $17^{\circ}C$. No significant differences were observed between the light and dark phases (P>0.05). OC raters during the light and dark phases were $74.8{\pm}0.7$, $69.6{\pm}0.6mg\;O_2/kg/h$ at $22^{\circ}C$, $107{\pm}1.2$, $98.0{\pm}0.7mg\;O_2/kg/h$ at $27^{\circ}C$ and $147.6{\pm}1.1$, $135.8{\pm}0.8mg\;O_2/kg/h$ at $32^{\circ}C$, respectively, indicating that OC is higher during daylight than nighttime. Giant grouper is thought to be a diurnal fish species, because the level of oxygen consumption during light period was higher than that during dark period.

본 연구에서는 수온 및 광조건에 따른 대왕바리 Epinephelus lanceolatus의 산소소비 특성을 조사하였다. 수온 17, 22, 27 및 $32^{\circ}C$에서 대왕바리의 산소소비량은 각각 $61.7{\pm}0.4$, $72.2{\pm}0.6$, $102.9{\pm}0.8$$141.7{\pm}1.0mg\;O_2/kg/h$으로 수온 상승과 비례하여 증가하였다. 광조건은 명기 (06:00~18:00 h)와 암기(18:00~06:00 h)는 각각 12시간씩 주었으며, 수온 $17^{\circ}C$에서 명기와 암기의 산소소비량은 각각 $62.7{\pm}0.4$, $62.5{\pm}0.3mg\;O_2/kg/h$로 유의한 차이를 보이지 않았다(P>0.05). 수온 $22^{\circ}C$에서 명기와 암기의 산소소비량은 각각 $74.8{\pm}0.7$, $69.6{\pm}0.6mg\;O_2/kg/h$, 수온 $27^{\circ}C$에서는 $107{\pm}1.2$, $98.0{\pm}0.7mg\;O_2/kg/h$, 그리고 수온 $32^{\circ}C$에서는 $147.6{\pm}1.1$, $135.8{\pm}0.8mg\;O_2/kg/h$로 암기보다 명기에 산소소비가 많은 경향을 보였다.

Keywords

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