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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39659

Title: Hemolymph PCO2, hemocyanin, protein levels and urea excretions of Penaeus monodon exposed to ambient ammonia
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: Ambient ammonia;PCO2;Hemocyanin;Hemolymph protein;Ammonotelism;Ureotelism;Penaeus monodon
Date: 1993-12
Issue Date: 2016-12-26T07:45:08Z
Publisher: Aquatic Toxicology
Abstract: Abstract:Subadult Penaeus monodon (21.985 ± 3.546 g) were exposed individually in 30 ppt seawater to 0.060 (control), 0.994, 4.631, 9.593 and 20.728 mg/l ammonia-N for 24 h. Hemolymph pH, PO2, PCO2, hemocyanin and protein levels, and whole animal ammonia-N, urea-N and nitrite-N excretions were determined. Urea-N excretion and nitrite-N excretion increased, whereas ammonia-N excretion and hemolymph PCO2 level decreased with increased ambient ammonia-N. P. monodon exposed to ambient ammonia-N greater than 4.631 mg/l, net ammonia-N uptake occurred, and caused significant reduction of hemocyanin and hemolymph protein and their ratio. In addition, there was a shift from ammonotelic to ureotelic excretory pattern of shrimps following exposure to ambient ammonia-N greater than 4.631 mg/l.
Relation: 27(3-4), pp.281-291
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39659
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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