Polybrominated Diphenyl Ethers and Polychlorobiphenyls in Fish from the Ionian Sea (Western Mediterranean)

This study reports on the accumulation of polybrominated diphenyl ethers (PBDEs) and polychlorobiphenyls (PCBs) in the muscle tissue of 11 species of fish from the Ionian Sea (Western Mediterranean). The results are consistent with previous studies that have reported now-generalized contamination by PCBs of the Mediterranean marine environment, as well as widespread diffusion of emerging contaminants such as polybrominated diphenyl ethers (PBDEs). The Western Mediterranean Sea, from which the 11 fish species were collected, receives a heavy pollutant input from the urban and industrial areas along its coasts. Higher values of PCBs (average over 1.5 mg/kg f.w.) were observed in pelagic top predators (little tuna, bluefin tuna and swordfish). These same species also showed higher levels of PBDEs, averaging above 0.5 ng/g f.w. This puts a few fish species at the top of the food chain—such as bluefin tuna and swordfish—at particular risk, and the importance of these species in the human diet suggests the need for particular care in our food choices.

意大利的金枪鱼、箭鱼、鸬鹚以及家燕等体内的多氯萘、多氯联苯、多氯二苯—p—二恶英、多氯二苯并呋喃以及p,p′—DDE

我们曾对从意大利收集的金枪鱼、箭鱼、普通鸬鹚以及家燕体内的p,(?)-DDE、多氯联苯同类物(PCBs)、多氯二苯-p-二恶英(PCDDs)、多氟二苯并呋喃(PCDFs)以及多氟萘(PCNs)浓度进行过测量。PCBs在金枪鱼、箭鱼、鸬鹅以及家燕肝脏内的平均浓度分别为930、745、1420和1230ng PCBs/g湿重,金枪鱼、箭鱼、鸬鹅以及家燕肝脏内的p,(?)-DDE平均浓度分别为82、135、166和95ng DDE/g湿重,在分析的所有样品中都发现有PCNs,不过浓度小于所报道的波罗的海生物体内的PCNs浓度。PCBs,特别是非正交、共面的PCBs占金枪鱼和箭鱼体内总毒性当量的80%～90%。鸬鹚和家燕体内PCDDs/DFs对毒性当量(TEQs)的相对贡献与鱼类相比更大一些。鸬鹚和家燕体内PCDD/DF同类物分别占总毒性当量的80%和45%。

海洋自然保护区水生环境质量的生物监测:一种生物标记方法

在MONIQUA-Egadi科研计划的框架下,目前研究的主要目标有2个:首先,发展和验证一种生态毒理学方法以评估海岸环境的海洋污染状况,这种方法基于新标志性生物的一系列生物标记反应;其次,获得意大利Egadi群岛(西西里)海洋保护区环境质量的基础信息。虹状濑鱼Coris julis,腹足动物帽贝Patella caerulea,以及海胆Paracentrotus lividus等标志性生物的几种细胞色素P450依赖的混合功能氧化酶的活性被测定。结果表明来自法维尼亚纳港的这些标志性生物可能暴露在P450诱导剂下,而大多数的其它地点似乎有着相同的环境质量。此处提出的方法有评估海洋自然保护区环境质量的潜力。