摘要
采用人工饲养实验方法,将黄鳝暴露于亚致死浓度的Cu2+污染环境(0.7—4.5mg·L-1)120h后,每隔24h对黄鳝肝脏、性腺组织及其线粒体中(Na++K+)-ATPase活性进行了检测。结果显示,黄鳝(Na++K+)-ATPase活性随着Cu2+污染浓度升高而降低。0.7mg·L-1的Cu2+污染对黄鳝(Na++K+)-ATPase活性影响小;Cu2+浓度大于3.0mg·L-1时,黄鳝(Na++K+)-ATPase活性受到较强的抑制。受Cu2+的污染,黄鳝(Na++K+)-ATPase活性随处理时间的变化在不同的组织表现出相类似的规律,即抑制-恢复-抑制过程。
Monopterus albus were exposed to sublethal Cu2+ concentrations (0.7 to 4.5 mg·L-1) for 120 h. The (Na++K+)-ATPase activities in the liver or gonad tissue and their mitochondria were evaluated every 24 h after Cu2+ exposure. The results indicated that (Na++K+)-ATPase activity decreased as Cu2+ concentration increased. At the concentration of 0.7 mg·L-1, (Na++K+)-ATPase activity was affected lightly, while Cu2+ concentration exceeded 3.0 mg·L-1,(Na++K+)-ATPase activities were inhibited greatly. And in Cu2+ polluted environment, the same tendency could be found that (Na++K+)-ATPase activities undergo inhibited-recovered-inhibited course with time.
出处
《农业环境保护》
CSCD
北大核心
2002年第6期508-511,共4页
Agro-Environmental Protection
基金
湖南省自然科学基金重点课题(99JJY1003)
