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에탄올에 대한 참돔, Pagrus major의 행동 및 생리학적 반응

Behavioral and physiological responses of juvenile red seabream Pagrus major exposed to Ethanol Seawater

김기태|장영진|권준영|박진우
수산생명의학회 (Aquatic Life Medical Science)|2012.04|한국어병학회지 (JOURNAL OF FISH PATHOLOGY)|제25권 제1호|pp. 47-58|DOI http://dx.doi.org/

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참고문헌

키워드

Stress responseRed seabreamEthanol seawater

초록

에탄올 0.6% 해수에 5시간 동안 침지한 참돔 치어는 유영행동을 멈추었으며 외부의 물리적 자극에도반응하지 않는 상태에 도달하였다. 이 농도구에서생존율은 100%였으며 RBC, hematocrit, Hb 수치는다른 그룹과 유의한 차이를 보이지 않았다. 혈장 코티졸 농도 또한 0.6% 에탄올 농도에서 가장 낮은 값을나타냈다. 그러나 0.8% 이상의 에탄올 해수에 침지한실험어는 심한 스트레스 반응과 높은 폐사율을 보였다. 참돔 치어를 0.6%의 에탄올 해수에 침지시키고매시간 산소소비량을 측정한 결과, 에탄올해수에 침지된 실험어는 실험개시 2시간 후부터 종료 시까지지속적으로 일반해수에 침지된 실험어보다 적은 산소를 소비하였다. 이상의 결과들은 에탄올에 의해유도된 취기효과가 마취제의 마취효과와 비슷하였으며, 5시간 침지 시 혈액성상, 행동반응, 생존율, 산소소비율 등을 종합하여 볼 때, 0.6% 이하의 에탄올농도가 참돔치어에게 안전한 농도이며, 0.8% 이상에서는 독성으로 작용할 수 있음을 보여준다.

Abstract

Behavioral and physiological responses of juvenile red seabream (Pagrus major) to different concentrations of ethanol were investigated. No swimming and no reaction to touching by a wooden stick was observed at 0.6% ethanol group in behavioral response, and survival rate was 100% after 5 hours of treatment. Red blood cell count, hematocrit and hemoglobin levels in plasma were not significantly different among all groups. AST activities in plasma significantly decreased as ethanol concentration increased. On the contrary, ALT activities in plasma significantly increased as ethanol concentration increased. Cortisol level in plasma was the lowest in 0.6% ethanol group. Glucose levels in plasma increased significantly when ethanol concentration increased more than 0.4%. Oxygen consumption of fish in 0.6% ethanol seawater was constantly lower than that of fish in control seawater from 2 hours after the exposure to ethanol seawater until the end of experiment.

참고문헌 (35)

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