Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Hematological Characteristics of Olive Flounder (Paralichthys olivaceus) in Culture Farm Influenced by Heated Effluent Water from a Power Plant in Summer

여름철 온배수 수역에 인접한 양식장 넙치(Paralichthys olivaceus)의 혈액 성상

  • Chang, Young-Jin (Dept. of Aquaculture, Pukyong National University) ;
  • Hur, Jun-Wook (Dept. of Aquaculture, Pukyong National University) ;
  • Chin, Pyung (Dept. of Marine Biology, Pukyong National University)
  • 장영진 (부경대학교 양식학과) ;
  • 허준욱 (부경대학교 양식학과) ;
  • 진평 (부경대학교 해양생물학과)
  • Published : 2002.11.01
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Abstract

Effect of heated water from a power plant in summer on hematological characteristics of flounder (Paralichthys olivaceus) were investigated. Hematocrit level fluctuated between 15.7 and 16.3% in control farm, but it significantly increased to 17.7% in the high-WT farm. The corresponding values for hemoglobin concentration were 9.9~18.0 $g/㎗$ for the control farm and 6.2~19.4 $g/㎗$ for the exposed farm. The plasma cortisol remained between 0.6 and 2.8 ng/$ml$ in the former but significantly decreased 317.1 to 3.3 ng/$ml$ in the later. The plasma glucose also decreased from 36.5~46.0 to 23.5~36.5 mg/$dl$. Plasma osmolality decreased from 551.5~597.0 to 391.0~466.5 mOsm/kg.

고수온기인 여름철 발전소와 인접하여 온배수 방류수 역의 해수를 양식용수로 사용하는 온배수 수역내 양식장(온수양식장)과 발전소로부터 15 km떨어져 있어 온배수 영향이 없는 양식장(대조양식장)에서 사육되고 있는 넙치의 혈액을 채취하여 혈액의 일반성상, cortisol 및 삽투질 농도 등을 서로 비교하였다. 두 양식장에서 고수온기인 8월 4일, 8월 19일, 9월 4일 및 9월 20일에 채집한 혈액의 Ht는 대조양식장에서 15.7∼16.3%의 범위를 보였으나, 온수양식장은 11.4∼l7.7%로 나타났다. 대조양식장에서 cortisol 농도는 0.6∼2.8 ng/$m\ell$의 범위를 나타낸 반면, 온수양식장은 8월 3일 317.1 ng/$m\ell$로 실험기간중 가장 높은 값을 보였다.

Keywords

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