Effects of Acute Exposure to Sublethal Waterborne Cadmium on Energy Homeostasis in Silver Carp (Hypophthalmichthys molitrix)
Effects of Acute Exposure to Sublethal Waterborne Cadmium on Energy Homeostasis in Silver Carp (Hypophthalmichthys molitrix)
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DOI：
10.1007/s00128-016-1896-2
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发表时间：
2016-08
影响因子：
2.7
通讯作者：
Jie Pi;Xuelin Li;Ting Zhang;Deliang Li
中科院分区：
文献类型：
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作者：
Jie Pi;Xuelin Li;Ting Zhang;Deliang Li
急性暴露于亚致死量的水体镉（Cd）对滤食性鱼类能量稳态的影响很少被研究。研究了银鲤幼鱼暴露于亚致死浓度镉96 h后，体内能量物质的反应模式。结果表明，镉对银鲤幼鱼的96 hLC 50为1.723 mg/L。亚致死剂量的Cd急性暴露显著影响了银鲤幼鱼的能量平衡，包括血糖和乳酸的升高，血浆甘油三酯、肌糖原、甘油三酯和肝糖原的降低。结果表明，在亚致死量镉暴露后，鲢鱼幼鱼体内糖原和甘油三酯的动员优先于蛋白质，以满足解毒和修复机制的需要，肝脏中糖原的消耗快于白肌，而恢复慢于白肌。
Effects of acute exposure to sublethal waterborne cadmium (Cd) on energy homeostasis in filter-feeding fishes have rarely been studied. The response patterns of energy substances were investigated in juvenile silver carp (Hypophthalmichthys molitrix) exposed to sublethal waterborne Cd for 96 h. The results showed the 96hLC50of Cd on juvenile silver carp was 1.723 mg/L. Sublethal acute exposure of Cd significantly affected the energy homeostasis of juvenile silver carp, including increase in plasma glucose and lactate, and decrease in plasma triglyceride, muscle glycogen and triglyceride and liver glycogen. The results indicated that glycogen and triglyceride prior to protein were mobilized to meet the increased demands for detoxication and repair mechanism to sublethal waterborne Cd exposure, and glycogen level depleted faster and restored slower in the liver than in the white muscle in juvenile silver carp.