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Stress Responses of Olive Flounder Paralichthys olivaceus to Hyposalinity  

이복규 (동의대학교 생물학과)
박철환 (동의대학교 생물학과)
김병기 (동의대학교 생물학과)
허준욱 (부경대학교 양식학과)
장영진 (부경대학교 양식학과)
이종관 (국립수산진흥원 울진수산종묘시험장)
임영수 (국립수산진흥원 울진수산종묘시험장)
이종하 (국립수산진흥원 울진수산종묘시험장)
Publication Information
Journal of Aquaculture / v.15, no.1, 2002 , pp. 69-75 More about this Journal
Abstract
Two different sizes of olive founder were abruptly (within 30 min) exposed to hyposalinities from 35 to 0 $\textperthousand$ and to 15 $\textperthousand$ in a flow through seawater culture systems with 8 tanks (300 l/tank). Analysis of blood samples showed the following significant increase at 0 $\textperthousand$ S: hematocrit from 16.1 to 23.4% after 3 hr exposure and to 24.6% after 24 hours; plasma cortisol from 1.6 to 22.8 and 9.5 ng/$ml$ at 1 and 24 hi after exposure. At this salinity, survival decreased to 92 and 20 % after 72 and 144 hours of exposure, respectively. Levels of glucose, $Na^{+}and Cl$^{-}$, total protein and AST showed that the fish was under considerable stress. However, the fish showed no significant stress on exposure to 15 $\textperthousand$S.
Keywords
Paralichthys olivaceus; Hyposalinity; Stress Response; Hematocrit; Cortisol;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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