Naghshbandi N, Zare S, Heidari R, Razzaghzadeh S
Department of Biology, Faculty of Sciences, Urmia University, Urmia, Iran.
Pak J Biol Sci. 2007 Nov 1;10(21):3956-9. doi: 10.3923/pjbs.2007.3956.3959.
Due to different human activities in the vicinities of Aras dam, various pollutants such as heavy metals are entered into the reservoir and thus polluting the aquatic ecosystem. As a result, this heavy metal is accumulated in the tissues of Astacus leptodoctylus, which is considered as one the abundant species of crayfish that has got important food values and is of economic importance due to its export to other countries. In this research, the bioaccumulation of heavy metals in different tissues of this animal is taken into consideration. The concentration of Fe, Cu, Zn, Mn, Pb, Ni, Co and Cr among the tissues of female and male Astacus leptodactylus has been determined. The highest concentration of Cu and Fe was found in the gills and the highest level of Zn was found in hepatopancreas. Besides, the highest Mn concentration was recognized in exoskeleton. Furthermore, no significant difference was found between the male and female crayfish in the concentration of the heavy metals in their tissues, except for the concentration of some of the metals such as Fe in some of the tissues such as hepatopancreas.
由于阿拉斯大坝周边存在不同的人类活动，各种污染物（如重金属）进入水库，从而污染了水生生态系统。结果，这种重金属在细足螯虾的组织中积累，细足螯虾是小龙虾的丰富物种之一，具有重要的食用价值，因其出口到其他国家而具有经济重要性。在本研究中，考虑了这种动物不同组织中重金属的生物累积情况。已测定了雌性和雄性细足螯虾组织中Fe、Cu、Zn、Mn、Pb、Ni、Co和Cr的浓度。发现鳃中Cu和Fe的浓度最高，肝胰腺中Zn的含量最高。此外，外骨骼中Mn的浓度最高。此外，除了某些组织（如肝胰腺）中某些金属（如Fe）的浓度外，雄性和雌性小龙虾组织中重金属的浓度没有显著差异。
