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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39645

Title: Hemocyanin oxygen affinity, and the fractionation of oxyhemocyanin and deoxyhemocyanin for Penaeus monodon exposed to elevated nitrite
Authors: Sha-Yen Cheng;Jiann-Chu Chen
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: Penaeus monodon;Nitrite;Hemocyanin oxygen affinity;Oxyhemocyanin;Deoxyhemocyanin
Date: 1999-03
Issue Date: 2016-12-26T06:40:18Z
Publisher: Aquatic Toxicology
Abstract: Abstract:Hemocyanin oxygen affinity and the fractionation of oxyhemocyanin and deoxyhemocyanin in the hemolymph of Penaeus monodon were studied for individual shrimps exposed to 0.001 (control), 0.07, 0.36, 0.72 and 1.44 mmol l−1 nitrite for 3 h up to 48 h in a salinity of 30 ppt at 25°C. The hemolymph P50 increased (indicating reduced affinity) and the hemolymph pO2 increased directly with ambient nitrite and exposure time. Hemolymph pH, oxyhemocyanin and hemolymph protein were inversely related to ambient nitrite and exposure time. P. monodon, following 6 h exposure to ambient nitrite at 0.36 mmol l−1, decreased significantly the fraction of oxyhemocyanin and increased that of deoxyhemocyanin. The increase of P50 and the increased fraction of deoxyhemocyanin suggests that hemocyanin oxygen binding decreases with a concomitant decrease of hemolymph pH, when P. monodon is subjected to nitrite.
Relation: 45(1), pp.35-46
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39645
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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