3种■体内微量元素测定与比较

Determination and Comparison of Microelements of Three Species of Liobagrus hilgendorf

测定了3种■(白缘■Liobagrus marginatus、拟缘■Liobagrus marginatoides、黑尾■Liobagrus nigricauda)肝、肾、肌肉和尾鳍4种组织中铬、锰、铁、铜和锌的含量,并将其与鲫(Carassius auratus)、黄颡鱼(Pelteobagrus fulvidraco)进行了比较分析。结果显示:鱼体5种微量元素总量由高到低依次为:白缘■、黑尾■、拟缘■、鲫、黄颡鱼;肌肉中5种元素含量由高到低依次为拟缘、黄颡鱼、鲫、黑尾■、白缘■;白缘■对铬和锌的富集作用比较突出,在上述几种组织中肝脏的富集作用最强。

The microelement（Cr^2＋ , Mn^2＋ , Fe^3＋ , Cu^2＋ and Zn^2＋ ） contents in liver, kidney, muscle and fin of Liobagrus marginatus, Liobagrus marginatoides, Liobagrus nigricauda, Carassius auratus and Pelteobagrus fulvidraco from Yangtze River were determined. The results showed that the sequence of 5 microelement gross in fish body is L. marginatus, L. nigricauda, L. marginatoides, C. auratus and P.fulvidraco from higher level to lower level. The sequence of 5 microelement gross in muscles is L. marginatoides, P.fulvidraco, C. auratus, L. nigricauda and L. marginatusfrom higher level to lower level. L. marginatus has rather outstanding enrichment action to Cr^2＋ and Zn^2＋ , especially in its liver.