Iranian Journal of Fisheries Sciences

en Accumulation Variations of selected heavy metals in Barbus xanthopterus in Karoon and Dez Rivers of Khuzestan, Iran Toxicology Toxicology پژوهشي Orginal research papers <a name="OLE_LINK95"></a><a name="OLE_LINK92"></a><a name="OLE_LINK91"></a><a name="OLE_LINK207"></a><a name="OLE_LINK206"></a><a name="OLE_LINK12"></a><a name="OLE_LINK11">The concentration</a>s of <a name="OLE_LINK31"></a><a name="OLE_LINK30">Cd, Pb, Ni and Hg </a>were determined in gill, liver and muscle of <a name="OLE_LINK49"></a><a name="OLE_LINK17"></a><a name="OLE_LINK16">Barbus xanthopterus</a><a name="OLE_LINK2"></a><a name="OLE_LINK1"> in down streams of </a><a name="OLE_LINK19"></a><a name="OLE_LINK18">Karoon</a><a name="OLE_LINK69"></a><a name="OLE_LINK68"> </a>and <a name="OLE_LINK25"></a><a name="OLE_LINK24">Dez</a><a name="OLE_LINK21"></a><a name="OLE_LINK20"></a><a name="OLE_LINK71"></a><a name="OLE_LINK70"> </a>Rivers during summer 2009. Heavy metal <a name="OLE_LINK29"></a><a name="OLE_LINK28"></a><a name="OLE_LINK34"></a><a name="OLE_LINK33">concentration</a>s varied significantly, depending on the types of the tissue in fish species. The levels of heavy metals such as Cd, Pb, Ni and Hg in the <a name="OLE_LINK23"></a><a name="OLE_LINK22"></a><a name="OLE_LINK298"></a><a name="OLE_LINK297">Barbus</a> xanthopterus of Karoon River were higher than in <a name="OLE_LINK32"></a><a name="OLE_LINK27"></a><a name="OLE_LINK26">Barbus xanthopterus</a> of Dez River (P<0.05). In Karoon and Dez Rivers, the concentrations of Cd, Pb and Ni were in the <a name="OLE_LINK36"></a><a name="OLE_LINK35">sequence</a><a name="OLE_LINK38"></a><a name="OLE_LINK37"> gill>liver>muscle</a><a name="OLE_LINK169"></a><a name="OLE_LINK168">. The concentration of Hg in Karoon River was </a><a name="OLE_LINK167"></a><a name="OLE_LINK166">in the sequence </a><a name="OLE_LINK42"></a><a name="OLE_LINK41">liver> gill> muscle</a> but, in Dez River, it was in the sequence liver> muscle > gill. <a name="OLE_LINK173"></a><a name="OLE_LINK172">Among</a> heavy metals (Cd, Pb, Ni and Hg), the accumulation of Pb was more than other heavy metals in fish (P<0.05). In both rivers, the accumulation of heavy metals in muscle of fish was higher than the world health organization (WHO) standard. <o:p /> Heavy metal, Barbus xanthopterus, Karoon, Dez, Khuzestan, Iran 372 382 http://jifro.ir/browse.php?a_code=A-10-1-163&slc_lang=en&sid=1 M. Mohammadi M40.Mohammadi@gmail.com 10031947532846003220 10031947532846003220 Yes A. Askary Sary 10031947532846003221 10031947532846003221 No M. Khodadadi 10031947532846003222 10031947532846003222 No