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NTIS 바로가기환경생물 = Korean journal of environmental biology, v.32 no.4, 2014년, pp.344 - 352
민병화 (국립수산과학원 전략양식연구소 양식관리과) , 박미선 (국립수산과학원 전략양식연구소 양식관리과) , 신윤경 (국립수산과학원 전략양식연구소 양식관리과) , 도용현 (국립수산과학원 전략양식연구소 양식관리과) , 명정인 (국립수산과학원 전략양식연구소 양식관리과)
The aim of the present study was to assess the effects of ammonia on physiological responses in Korean rockfish (Sebastes schlegeli). Interestingly, no mortality were observed when the specimens (
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핵심어 | 질문 | 논문에서 추출한 답변 |
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어류 체내의 암모니아가, 외부로 배출되는 통로는? | 어류 체내의 암모니아는 아가미를 통해 외부로 배출되지만, HEA 조건에서는 아가미를 통한 암모니아 배출이 감소하며, 반대로 내부로의 암모니아 유입이 일어난다. 경골어류 및 다른 수서동물의 아가미는 암모늄 이온 수송에 의한 암모니아 항상성 유지와 관련된 여러 이온 수송체와 메커니즘을 가지고 있다(Evans et al. | |
경골어류 및 다른 수서동물의 아가미에서, 암모니아 항상성 조절에 관여하는 이온 수송체는? | 1999, 2005). 아가미의 Na+/K+-ATPase (일명 Na+ pump로도 불리움)는 삼투압조절과 직접적으로 관여하며, 또한 K+와 NH4+는 수화반경 (hydrated radius)이 동일하기 때문에 Na+/K+- ATPase는 K+ 대신 NH4+를 혈액에서 아가미 상피로 펌핑하는 중요한 역할을 한다(Randall et al. 1999; Alam and Frankel 2006). | |
어류의 암모니아의 생성에 영향을 미치는 요인은? | 암모니아 독성은 수서동물, 특히 어류에게 보편적인 문제로 되어오고 있다. 암모니아는 어류가 주로 아가미를 통해 배출하는 주요 질소화합물로 암모니아의 생성은 단백질 섭취량, 대사효율과 같은 요인에 크게 좌우되며, 이러한 요인조차 종 특이적이며, 염분, 수온, pH, 외부의 암모니아 농도에 의해 영향을 받는다 (Randall and Tsui 2002). 집약적 어류양식 시스템에서 고밀도 사육, 먹이공급, 환수량 부족은 암모니아 농도를 높이며, 이로 인해 넙치(Paralichthys olivaceus) (Kim et al. |
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