A survey of size-specific mercury concentrations in game fish from Maryland fresh and estuarine waters
A survey of size-specific mercury concentrations in game fish from Maryland fresh and estuarine waters
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DOI：
10.1007/s002440010079
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发表时间：
2000-07-01
影响因子：
4
通讯作者：
Riedel, GS
中科院分区：
文献类型：
--
作者：
Gilmour, CC;Riedel, GS
对来自马里兰州淡水和河口水域的一个子集的猎鱼中特定尺寸的汞（Hg）浓度进行了调查，其中测量了切萨皮克湾及其支流的7个淡水蓄水池和3个潮汐和4个河口地点的112条鱼的汞浓度。条纹鲈鱼（Morone saxatilis）是研究最多的品种。在被检查的鱼类中，最大的淡水运动鱼含有最高的汞浓度。来自切萨皮克湾及其支流的条纹鲈鱼和大口鲈鱼（Micropterus salmoides）在相同大小下的汞含量低于淡水中相同种类的汞含量。来自深溪湖和自由水库的大条纹鲈鱼、黑链琵琶鱼和白眼鱼的含量超过了FDA规定的每公斤1毫克汞的标准。其他水库中的条纹鲈鱼、大口鲈鱼和白鲷（Pomoxis annularis）的含量等于或超过了0.5 mg Hg/kg的常见建议水平。湖泊之间，特别是淡水和咸水之间尺寸标准化汞浓度的巨大差异突出了生态系统中甲基汞产生和生物积累的巨大差异。这项工作表明，为了保护人类和野生动物的健康，有必要对马里兰州鱼类中的汞进行更全面的研究。
A survey of size-specific mercury (Hg) concentrations in game fish from a subset of Maryland fresh and estuarine waters was conducted, in which Hg concentrations in 112 fish from seven freshwater impoundments and three tidal and four estuarine locations in Chesapeake Bay and its tributaries were measured. Striped bass (Morone saxatilis) was the most intensively examined species. Of the fish examined, the largest freshwater sportfish contained the highest Hg concentrations. Striped bass and largemouth bass (Micropterus salmoides) from Chesapeake Bay and its tributaries contained less Hg at the same size than the same species in fresh waters. Large striped bass, chain pickerel (Esox niger), and walleye (Stizostedion vitreum) from Deep Creek Lake and Liberty Reservoir exceeded the FDA action level of 1 mg Hg/kg. Striped bass, largemouth bass, and white crappie (Pomoxis annularis) in other impoundments equaled or exceeded a common advisory level of 0.5 mg Hg/kg. Large differences in size-normalized Hg concentrations among lakes and particularly between fresh and salt waters highlight the large differences in MeHg production and bioaccumulation among ecosystems. This work indicates that a more comprehensive study of Hg in Maryland fish is warranted to protect human and wildlife health.