Wong M H, Luk K C, Choi K Y
Acta Anat (Basel). 1977;99(4):450-54.
The effects of zinc and copper salts on the survival of the two species of freshwater fish, common carp, Cyprinus carpio, and grass carp, Ctenopharyngodon idellus, were investigated. It was discovered that the levels of tolerance to the concentration of the metals were species-specific. Cyprinus carpio was found to be more susceptible to copper, whereas Ctenopharyngodon idellus was more susceptible to zinc. In general, copper was more toxic than zinc, as revealed by the survival times. The body and the gills of dead fish seemed to be covered by a veil-like film which looked like coagulated mucus and which was formed by the heavy-metal ions reacting with some constituents of the mucus and which was formed by the heavy-metal ions reacting with some constituents of the mucus secreted by the gill. The histopathological assessment of the gill and liver of Cyprinus carpio was also carried out. Particles were observed around the gills of the dead fish treated with zinc and copper salts, although no other major changes were found in the gill. Several histopathological changes were observed in the livers, including the presence of particles. The symptoms of the liver suggested that the internal injury was also an important feature of the intoxicants.
研究了锌盐和铜盐对两种淡水鱼（鲤鱼，Cyprinus carpio，和草鱼，Ctenopharyngodon idellus）存活的影响。发现这两种鱼对金属浓度的耐受水平具有物种特异性。结果发现鲤鱼对铜更敏感，而草鱼对锌更敏感。一般来说，从存活时间来看，铜的毒性比锌更大。死鱼的身体和鳃似乎覆盖着一层面纱状薄膜，看起来像凝固的黏液，它是由重金属离子与黏液的某些成分反应形成的，而黏液是由鳃分泌的。还对鲤鱼的鳃和肝脏进行了组织病理学评估。在用锌盐和铜盐处理的死鱼鳃周围观察到颗粒，不过在鳃中未发现其他主要变化。在肝脏中观察到一些组织病理学变化，包括有颗粒存在。肝脏的症状表明内部损伤也是中毒的一个重要特征。
