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ISSN : 1225-3480
본 연구는 납에 노출된 굴 Crassostrea gigas의 생물학적 반응을 알아보고자 하였다. 실험기간은 4주였으며, 실험구는 대조구 1개와 납 노출구 3개 (0.20, 0.40 and 0.80 mg/L) 였다. 실험 결과 납은 굴의 생존율과 산소소비율의 저하 및 기관계의 조직학적 변성을 유도하는 것이 확인되었다. 산소소비율은 대조구에 비해 납 노출구에서 15-55% 감소하였다. 기관계의 조직학적 분석 결과, 외투막에서는 혈림프동의 팽창, 상피층과 결합조직층의 변성을 보였다. 아가미에서는 새엽 상피세포의 변성과 섬모대의 소실이 확인 되었으며, 소화선세관에서는 상피세포와 호염기성세포의 변성 및 상피층의 파괴가 관찰되었다.
This study was conducted to find out biological response of the oyster Crassostrea gigas exposed to lead (Pb). Experimental period was four weeks. Experimental groups were composed of one control condition and three lead exposure conditions (0.20, 0.40 and 0.80 mg/L). The results of the study confirmed that lead induces reduction of survival rate and oxygen consumption rate and degeneration of organ structure of the bivalve. Oxygen consumption rate was observed exposure groups lower than control decline by 15%-55%. Histological analysis of organ system illustrated expansion of hemolymph sinus, degeneration of epithelial layer and connective tissue layer of the mantle. Also, epithelial degeneration and disappearance of cilia band are recognized in the gill filament and it was observed disruption of epithelial layer and degeneration of basophilic cell and epithelial cell in the digestive tubules.
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