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Title: Accumulation of urea in the haemolymph and ammonia excretion of Penaeus japonicus exposed to ambient nitrite
Authors: Jiann-Chu Chen;Sha-Yen Cheng
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: Penaeus japonicus;Nitrite;Haemolymph;Accumulation ammonia;Urea;Excretion;Uptake
Date: 1995-01
Issue Date: 2016-12-26T07:14:04Z
Publisher: Comparative Biochemistry and Physiology Part C: Pharmacology, Toxicology and Endocrinology
Abstract: Abstract:Penaeus japonicus (15.7 ± 1.4 g) were exposed individually in 30 ppt seawater to 0.01 (control), 5, 10, 20 and 50 mg/l nitrite-N for 24 hr. Haemolymph ammonia, urea, nitrite and whole shrimp ammonia-N excretion and nitrite-N uptake were then determined. Ammonia excretion of P. japonicus increased with increased ambient nitrite, and with a concomitant decrease of haemolymph ammonia, as occurring increased concentrations of nitrite. Concentrations of nitrite-N and urea-N in the haemolymph of shrimp increased with increased ambient nitrite-N. However, no urea-N excretion was observed for shrimp exposed to any nitrite treatments.
Relation: 110(1), pp.1-6
Appears in Collections:[Department of Environmental Biology and Fisheries Science] Periodical Articles

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