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Title: Changes of oxyhemocyanin and protein levels in the hemolymph 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;Hemolymph;Oxyhemocyanin;Protein;Nitrite;Ammonia;Urea
Date: 1995-10
Issue Date: 2016-12-26T07:19:03Z
Publisher: Aquatic Toxicology
Abstract: Abstract:The concentrations of oxyhemocyanin, protein and urea in the hemolymph, and ammonia-N excretion of Penaeus japonicus (15.08 ± 1.56 g) were examined, after the shrimp had been exposed individually in 30 ppt to 0.01 (control), 5.12, 10.46, 20.57 and 50.86 mg/l nitrite-N at 25 °C for 24 h. Accumulation of nitrite-N and urea-N in the hemolymph, and ammonia-N excretion of shrimp increased with increased ambient nitrite-N over the entire range. Nitrite-N uptake occurred, and increased with increased ambient nitrite-N in the range of 5.12–50.86 mg/l. Exposure of P. japonicus to elevated nitrite-N affected nitrogen metabolism, and decreased the oxyhemocyanin and the ratio of oxyhemocyanin/protein. It is suggested that nitrite incorporated into the hemolymph of penaeids may decrease the oxygenation state of the hemolymph, and decrease the fraction of oxyhemocyanin.
Relation: 33(3-4), pp.215-226
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39651
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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