EFFECTS OF CADMIUM ON PLASMA-CATECHOLAMINES IN THE AMERICAN EEL, ANGUILLA-ROSTRATA

被引:11
作者
GILL, TS
EPPLE, A
机构
[1] Department of Anatomy, Thomas Jefferson University, Philadelphia, PA
基金
美国国家科学基金会; 美国国家卫生研究院;
关键词
CADMIUM; PLASMA CATECHOLAMINE; ANGUILLA-ROSTRATA;
D O I
10.1016/0166-445X(92)90003-6
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
The impact of up to 16 weeks' exposure to environmentally realistic low and high concentrations of cadmium (75 and 150-mu-gl/l, respectively) on the plasma catecholamines was studied in the American eel, Anguilla rostrata. After 8 and 16 weeks of exposure to 150-mu-g/l of Cd, the baseline concentrations of dopamine (DA), norepinephrine (NE) and epinephrine (E) were below control levels. The changes were less consistent in the eels exposed to the lower dose. Exposure to the high Cd concentration impaired the initial response of plasma DA to mild short-term stress (1 min exposure to CO2 bubbles), but did not have a clear impact on the stress response of NE and E. It is concluded that long-term exposure to 150-mu-g/l of Cd interferes directly or indirectly with the release of CAs from the adrenomedullary equivalent of the American eel.
引用
收藏
页码:107 / 117
页数:11
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