Hosseini Seyed Vali, Behrooz Reza Dahmardeh, Esmaili-Sari Abbas, Bahramifar Nader, Hosseini Seyed Mehdi, Tahergorabi Reza, Hosseini Seyed Fakhreddin, Feás Xesús
Department of Fisheries, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, P.O. Box 46414-356, Noor, Mazandaran, Iran.
Chemosphere. 2008 Oct;73(6):972-9. doi: 10.1016/j.chemosphere.2008.06.036. Epub 2008 Jul 25.
This study focused on accumulation of organochlorine compounds (OCs), including dichloro-diphenyl-trichloroethanes (DDTs), hexachlorobenzene (HCB), hexachlorocyclohexanes (HCHs), and polychlorinated biphenyls (PCBs) accumulation in the muscle of four sturgeon (Persian sturgeon, Acipenser persicus; Stellate sturgeon, Acipenser stellatus; Ship sturgeon, Acipenser nudiventris and Beluga sturgeon, Huso huso) from the southern Caspian Sea. The DDT group was prominent in all of the sturgeon muscle tested constituting almost half or more of the total organochlorine content. Contaminant concentration generally followed this order: DDTs>PCBs>HCHs>HCB. The OCs concentrations in Beluga sturgeon (H. huso) were the highest and over four times higher than in the next highest species (A. nudiventris). From an ecotoxicological point of view, the concentrations of OCs in experimental fishes do not reflect a comparatively clean and pollution-free environment; however, results from this study shown that the inflow of organic pollutants into the Caspian Sea has been reduced when compared with prior studies. Levels of measured OCs in sturgeon were relatively low, but the level of some OCs in some of the specimens tested exceeded the guidelines for food; therefore, the maximum allowable daily consumption rate for sturgeon from this watershed may be limited by DDTs and PCBs content for high risk populations.
本研究聚焦于里海南部四种鲟鱼（波斯鲟，Acipenser persicus；星点鲟，Acipenser stellatus；裸腹鲟，Acipenser nudiventris和欧洲鳇，Huso huso）肌肉中有机氯化合物（OCs）的积累情况，这些有机氯化合物包括滴滴涕（DDTs）、六氯苯（HCB）、六氯环己烷（HCHs）和多氯联苯（PCBs）。在所有测试的鲟鱼肌肉中，滴滴涕组最为突出，几乎占总有机氯含量的一半或更多。污染物浓度一般遵循以下顺序：滴滴涕>多氯联苯>六氯环己烷>六氯苯。欧洲鳇（H. huso）体内的有机氯化合物浓度最高，比第二高的物种（裸腹鲟，A. nudiventris）高出四倍多。从生态毒理学角度来看，实验鱼类体内的有机氯化合物浓度并未反映出相对清洁且无污染的环境；然而，本研究结果表明，与先前的研究相比，流入里海的有机污染物已经减少。鲟鱼体内测得的有机氯化合物水平相对较低，但部分测试样本中某些有机氯化合物的水平超过了食品标准；因此，该流域鲟鱼的最大允许日消费率可能受到高风险人群体内滴滴涕和多氯联苯含量的限制。
