鱼体微量元素的生态化学特征研究

STUDIES ON THE CHARACTERISTICS OF ECOLOGICAL CHEMISTRY OF MICROELEMENTS IN FISH

本文以１６种鱼的１６个元素含量和相应水环境中的元素含量的大量分析数据为基础，分析了鱼体内微量元素的生态化学特征。结果表明，鱼体内一些元素之间存在显著相关性，且一种元素的含量能较好地用几种其它元素的回归方移表示。鱼体对微量元素有很强的富集作用，１２种微量元素在１２种鱼体的个均富集系数（鱼体／过滤水）在７９２－２１２０６之间，文中比较了不同元素的富集水平，以及不同鱼种的富集能力。鱼体和水中的徽量元素之间存在显著相关性，相关系数为０．９８００。

Statistical analyses were performed on the contents of 16 microelements in 16 species offish and in related aquatic environments; Significant correlations were observed betweensome pairs of these elements,and stepwise variable selection is effectively applied inregression analyses between one element and several others,Enrichment of microelementsmav occur in fish as indicated bv the enrichment coefficients of 12 microelements,rangingfrom 79.2 to 21206 in 12 species of fish,Significant correlations were also found between theelement contents in fish and those in water.