Mercury and selenium levels, and selenium:mercury molar ratios of brain, muscle and other tissues in bluefish (Pomatomus saltatrix) from New Jersey, USA.
Mercury and selenium levels, and selenium:mercury molar ratios of brain, muscle and other tissues in bluefish (Pomatomus saltatrix) from New Jersey, USA.
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DOI：
10.1016/j.scitotenv.2012.10.040
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发表时间：
2013-01-15
期刊：
影响因子：
--
通讯作者：
Gochfeld M
中科院分区：
文献类型：
--
作者：
Burger J;Jeitner C;Donio M;Pittfield T;Gochfeld M
许多污染物影响鱼类健康，包括汞和硒，以及硒与汞的摩尔比。最近，硒对甲基汞毒性的保护作用已经公布，特别是对食用咸水鱼。然而，硒对鱼类毒性的相对改善作用尚未得到研究，也没有在不同组织（即大脑）中的摩尔比。我们研究了汞和硒的含量在脑，肾，肝，红色和白色肌肉，皮肤和鳞片的蓝鱼（Pomatomus saltatrix）从新泽西，以确定是否有毒性水平的金属，我们计算了硒：汞的摩尔比的组织。总汞在可食用肌肉和脑中的平均值分别为0.32 ± 0.02ppm和0.09 ± 0.01ppm。肌肉中硒含量平均为0.37 ± 0.03ppm，脑中硒含量平均为0.36 ± 0.03ppm。有显着差异的汞，硒，硒：汞的摩尔比，组织之间的水平。汞和硒水平在肾脏和皮肤/鳞片相关。汞含量在肾脏中最高，在肌肉和肝脏中居中，在大脑和皮肤/鳞片中最低;硒含量在肾脏中也最高，在肝脏中居中，在白色肌肉和大脑中低一个数量级。肌肉、肾脏和皮肤/鳞片中的汞含量与鱼的大小（长度）呈正相关。肌肉、肾脏和肝脏中的硒含量与鱼体长度呈正相关，而脑中的硒含量与鱼体长度呈负相关。硒：汞的摩尔比与鱼的长度呈负相关，尤其是对于长度超过50厘米的鱼而言，白色肌肉、肝脏、肾脏和大脑，这表明年龄较大的鱼比较小的鱼更少感受到硒对汞毒性的保护优势，蓝鱼的消费者同样从食用较大的鱼中获得的优势较少。
A number of contaminants affect fish health, including mercury and selenium, and the selenium: mercury molar ratio. Recently the protective effects of selenium on methylmercury toxicity have been publicized, particularly for consumption of saltwater fish. Yet the relative ameliorating effects of selenium on toxicity within fish have not been examined, nor has the molar ratio in different tissues, (i.e. brain). We examined mercury and selenium levels in brain, kidney, liver, red and white muscle, and skin and scales in bluefish (Pomatomus saltatrix) from New Jersey to determine whether there were toxic levels of either metal, and we computed the selenium: mercury molar ratios by tissues. Total mercury averaged 0.32 ± 0.02 ppm wet weight in edible muscle and 0.09 ± 0.01 ppm in brain. Selenium concentration averaged 0.37 ± 0.03 in muscle and 0.36 ± 0.03 ppm in brain. There were significant differences in levels of mercury, selenium, and selenium: mercury molar ratios, among tissues. Mercury and selenium levels were correlated in kidney and skin/scales. Mercury levels were highest in kidney, intermediate in muscle and liver, and lowest in brain and skin/scales; selenium levels were also highest in kidney, intermediate in liver, and were an order of magnitude lower in the white muscle and brain. Mercury levels in muscle, kidney and skin/scales were positively correlated with fish size (length). Selenium levels in muscle, kidney and liver were positively correlated with fish length, but in brain; selenium levels were negatively correlated with fish length. The selenium: mercury molar ratio was negatively correlated with fish length for white muscle, liver, kidney, and brain, particularly for fish over 50 cm in length, suggesting that older fish experience less protective advantages of selenium against mercury toxicity than smaller fish, and that consumers of bluefish similarly receive less advantage from eating larger fish.
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影响因子：
8.3
作者：
Burger, J;Gochfeld, M
通讯作者：
Gochfeld, M
影响因子：
9.8
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影响因子：
9.8
作者：
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8.3
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8.3
作者：
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通讯作者：
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