中国海洋湖沼学报（英文版）2011，Vol.29Issue(3)：524-530,7.DOI:10.1007/s00343-011-0109-4
Effect of hypoxia on the blood of large yellow croaker (Pseudosciaena crocea)
Effect of hypoxia on the blood of large yellow croaker (Pseudosciaena crocea)
摘要
Abstract
Large areas of hypoxic water have recently been reported in the East China Sea. It is hypothesized that hypoxia may be partially responsible for the decline of some fish stocks. We evaluated the effect of hypoxia on large yellow croaker (Pseudosciaena crocea). The fish were exposed to three concentrations of dissolved oxygen (DO; 1.5 mg/L and 2.0 mg/L, and 6.5 mg/L control). We collected blood after 6, 12, 24, 48, and 96 h exposure. There was a significant increase in red blood count, hematocrit,hemoglobin concentration, and mean corpuscular hemoglobin in the group exposed to 1.5 mg/L DO after 6 h or 12 h, and a delayed increase (only elevated after 48 h and 96 h) in these indices in the group exposed to 2.0 mg/L DO. Plasma glucose concentrations increased significantly in both hypoxic groups after 24 h.Furthermore, plasma lactate and lactate dehydrogenase activity increased significantly after the first 6 h exposure in both hypoxic groups. Our results suggest that large yellow croakers could not maintain the aerobic pathway and instead use anaerobic metabolism for survival when DO levels fall below 2.0 mg/L.We conclude that the occurrence of hypoxia (＜2 mg/L DO) in the East China Sea could cause metabolic stress for large yellow croakers and may be partially responsible for the population decline of this species.关键词
Pseudosciaena crocea/hematology/glucose/lactate/lactate dehydrogenaseKey words
Pseudosciaena crocea/hematology/glucose/lactate/lactate dehydrogenase引用本文复制引用
GU Xiaolian,XU Zhaoli..Effect of hypoxia on the blood of large yellow croaker (Pseudosciaena crocea)[J].中国海洋湖沼学报（英文版）,2011,29(3):524-530,7.基金项目
Supported by the Special Research Fund for the National Non-profit Institutes (No.2007M24),the Shanghai Postdoctoral Scientific Program (No.07R214165),the National Natural Science Foundation of China (No.40776047),and the National Basic Research Program of China (973 Program) (No.2010CB429005) （No.2007M24）
