Biology Department, University of Crete, Voutes University Campus, 71003 Heraklion, Crete, Greece.
Food Chem. 2013 Nov 15;141(2):680-94. doi: 10.1016/j.foodchem.2013.04.049. Epub 2013 Apr 24.
Farmed fish and wild fish aggregating in the vicinity of four Mediterranean fish farms with different environmental conditions were sampled. Levels of metals (including As and Se) were measured in the muscle, liver, gills, bone and intestine. The wild fish from sites with anoxic substrata accumulate metals (including As and Se) from the ambient habitat in their gills whereas those from sites with oxic substrata concentrate these elements through their diet in their intestine. Tissues of wild fish aggregating around farm cages accumulate a greater number of these elements and with higher concentrations than farmed fish. Habitat, diet, ecological needs, fat content of fish, and protein expression may play an important role in these element differences between fish species. Fe in flathead grey mullet, As in surmullet, rainbow wrasse, grey gurnard and picarel and Hg in bogue may pose a risk for human health. Farmed and wild fish are good sources of P, K, Cr and Se while flathead grey mullet, picarel and comber are excellent sources of Ca and Se.
养殖鱼类和野生鱼类聚集在四个具有不同环境条件的地中海鱼类养殖场附近，对其进行了采样。在肌肉、肝脏、鳃、骨骼和肠道中测量了金属（包括砷和硒）的含量。在缺氧底质的地点聚集的野生鱼类会从周围的栖息地中积累金属（包括砷和硒）在其鳃中，而在富氧底质的地点聚集的野生鱼类则通过其饮食在肠道中浓缩这些元素。聚集在养殖场笼子周围的野生鱼类积累了更多数量的这些元素，并且浓度更高。鱼类的栖息地、饮食、生态需求、脂肪含量和蛋白质表达可能在这些元素的物种差异中发挥重要作用。平鲷中的铁、鲻鱼、彩虹鲷、灰鲂和鲷鱼中的砷以及牙鳕中的汞可能对人类健康构成威胁。养殖鱼类和野生鱼类是磷、钾、铬和硒的良好来源，而平鲷、鲷鱼和鲳鱼是钙和硒的极好来源。
