한국발생생물학회지:발생과생식 (Development and Reproduction)

  • 제19권1호
  • /
  • Pages.19-24
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  • 2015
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  • 2465-9525(pISSN)
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  • 2465-9541(eISSN)
한국발생생물학회 (The Korean Society of Developmental Biology)
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Effects of Water Temperature Change on the Hematological Responses and Plasma Cortisol Levels in Growing of Red Spotted Grouper, Epinephelus akaara

  • Cho, Hyun Chul (Dept. of Marine Biology, Pukyong National University) ;
  • Kim, Ji Eun (Dept. of Marine Biology, Pukyong National University) ;
  • Kim, Hyung Bae (Dept. of Marine Bio-Resources, Gangwon Provincial University) ;
  • Baek, Hea Ja (Dept. of Marine Biology, Pukyong National University)
  • 투고 : 2015.01.03
  • 심사 : 2015.02.10
  • 발행 : 2015.03.31
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초록

This study was conducted to determine the stress response [ethological (operculum movement number (OMN)), hematological (hematocrit and hemoglobin), biochemical (glucose, cortisol and glutamic oxaloacetic transaminase (GOT))] in red spotted grouper, Epinephelus akaara during exposure of different water temperature in winter season. This species (Total length, $18.56{\pm}0.34cm$) previously maintained in water temperature of $15^{\circ}C$ were transferred to 15, 20 and $25^{\circ}C$. During experimental period (7 days), OMN, hematocrit (Ht), glucose and GOT values were significantly high in $15^{\circ}C$ when compared to 20 and $25^{\circ}C$. Hemoglobin value was also increased at $15^{\circ}C$, but no significant differences. There was no differences in cortisol levels among the temperature groups. No fish mortality was observed during the experimental period. From these results, $15^{\circ}C$ is likely more stressful to red spotted grouper than $20^{\circ}C$ and $25^{\circ}C$. These observations confirm that red spotted grouper adapts better to temperatures between 20 and $25^{\circ}C$ during the winter season.

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참고문헌

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