マダイの尿性状に及ぼす環境水の塩分濃度低下の影響〔英文〕
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概要
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Changes in urine properties of cultured red sea bream Pagrus major were investigated during exposure to diluted (70%) seawater. The experiment was performed at 23.5°C under natural light conditions in early September. Urine properties under resting conditions in 100% seawater (control) were as follows: urine flow, 0.6ml/kg B.W./hr; osmotic pressure, 370mOsm/kg; Na+, 140mEq/l; Mg+, 60mEq/l; Ca2+, 9mEq/l; K+, 6mEq/l; protein, 40mg/l00ml; urea, 11mg/100ml; ammonium, 3mg-N/100ml; inorganic phosphate (P), 4mg/100ml; lactic acid, 1mg/100ml. No significant diurnal changes for these parameters were detected. When fish were exposed to 70% seawater, urine flow, urinary Na+, Ca2+, and ammonium increased, whereas osmotic pressure, Mg2+, protein, P, and lactic acid decreased. No significant changes for urinary K+ or urea were found.
- 日本水産學會の論文
著者
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Namba Kenji
Faculty Of Applied Biological Science Hiroshima University
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難波 憲二
Faculty of Applied Biological Science, Hiroshima University
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Uematsu Kazumasa
Faculty Of Applied Biological Science Hiroshima University
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角田 出
石巻専修大学大学院理工学研究科
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Kakuta Izuru
Department Of Biological Engineering Faculty Of Science And Engineering Ishinomaki Senshu University
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Murachi Shiro
Department Of Fisheries Faculty Of Agriculture Tohoku University
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Takaba Minoru
Hiroshima Prefectural Fisheries Experimental Station
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角田 出
Department of Biotechnology, Senshu University of Ishinomaki
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植松 一真
Faculty of Applied Biological Science, Hiroshima University
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Murachi Shiro
Department of Biotechnology, Senshu University of Ishinomaki
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- マダイの尿性状に及ぼす環境水の塩分濃度低下の影響〔英文〕
- コイ尿性状の年間変動〔英文〕
- チチブとヌマチチブのイオン調節