School of Natural Sciences (Chemistry), University of Tasmania, Locked Bag 1370, Launceston, 7250, Tasmania, Australia.
Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Locked Bag 1370, Launceston, 7250, Tasmania, Australia.
Mar Pollut Bull. 2019 Dec;149:110493. doi: 10.1016/j.marpolbul.2019.110493. Epub 2019 Aug 20.
Melanisation of muscle, observed as black pigmentation of the normally white flesh, has been reported in sand flathead from Tasmania and investigated in this study. There was a significant difference in the presence of melanised muscle in sand flathead from two sites within the Tamar Estuary (northern Tasmania), with higher proportion of sand flathead from Deceitful Cove with this condition. Presence of melanisation was not related to length or weight of the fish. No parasitic infections were detected in the muscles of the affected sand flathead. However, concentration of zinc in melanised regions of muscle in the affected fish was significantly higher, about 1.7 to 1.8 times, than non-melanised regions of muscle in the same fish. Furthermore, the concentration of zinc in melanised regions of affected fish was on average about 2.0 times higher when compared to muscle of unaffected fish that had no melanised spots.
肌肉黑化，即原本白色的鱼肉出现黑色色素沉着，已在塔斯马尼亚的沙氏平鲉中被观察到，并在本研究中进行了调查。塔马尔河口（塔斯马尼亚北部）两个地点的沙氏平鲉中存在明显的黑色素化肌肉，来自 Deceitful Cove 的沙氏平鲉中这种情况的比例更高。黑色素化的存在与鱼的长度或重量无关。受影响的沙氏平鲉的肌肉中未检测到寄生虫感染。然而，在受影响的鱼的黑色素化肌肉区域中，锌的浓度明显更高，约为 1.7 到 1.8 倍，而同一鱼的非黑色素化肌肉区域中的锌浓度则较低。此外，与没有黑色素沉着斑点的未受影响的鱼的肌肉相比，受影响的鱼的黑色素化区域中的锌浓度平均高约 2.0 倍。
