摘要
以水体甲基汞不同浓度（μｇ／Ｌ）分别染毒鲤鱼２４小时和１周。实验结果表明：在浓度高于５０μｇ／Ｌ染毒２４小时和浓度２０μｇ／Ｌ染毒１周时，多数染毒鱼的血浆Ｋ＋和Ｍｇ２＋浓度增高，Ｎａ＋和Ｃｌ－浓度下降，ＰＯ３－４值变化不明显。血浆Ｃａ２＋浓度仅在２００μｇ／Ｌ染毒２４小时和高于４０μｇ／Ｌ染毒１周时，染毒鱼的血浆Ｃａ２＋出现极显著下降。甲基汞量高于１００μｇ／Ｌ染毒２４小时和８０μｇ／Ｌ染毒１周，染毒鱼的血浆渗透压呈明显下降趋势。鳃线粒体Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ活性仅在染毒２４小时浓度为２５μｇ／Ｌ和５０μｇ／Ｌ剂量时受到抑制。甲基汞还引起了血糖含量的明显增高。
The carps were exposed to various concentrations (μg/L) of methyl mercury chloride (MMC) for 24 hours or for one week (50 μg/L for 24 hs and 20 μg/L for 1 week).Plasma concentration of potassium and magnesium were significantly increased,but sodium and chloride decreased in high concentration of MMC.The phosphate levels did not indicate clear change.However,the decrease of calcium was significant only when they were exposured to the highest concentrations (200 μg/L for 24 hours and 40 μg/L for 1 week).The decline tendency of the plasma osmolarity appeared in the methyl mercury treated fish at the highest dosages of using MMC.Methyl mercury also caused concentration of the plasma glucose to increase.The blood glucose content of the carps was significantly higher than that of the control group,when dosage was used at concentrations of 50 μg/L for 24 hours or 20 μg/L for 1 week.The activity of Na +-K +-ATPase in the gill filaments mitochondria was inhibited by mercury treated fish at concentrations 25 μg/L and 50 μg/L for using only 24 hours.
出处
《中国水产科学》
CAS
CSCD
1996年第3期1-7,共7页
Journal of Fishery Sciences of China
关键词
甲基汞
鲤鱼
渗透压
血浆离子
Methylmercury,Common carps,Osmolality,Plasma ions,Na +-K +-ATPase
