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Mercury concentrations in largemouth bass (Micropterus salmoides), white bass (Morone chrysops), and white crappie (Pomoxis annularis) from six Dallas-Fort Worth area reservoirs.

机译:来自六个达拉斯-沃思堡地区水库的大口黑鲈(Micropterus salmoides),白鲈(Morone chrysops)和白white(Pomoxis ringis)中的汞浓度。

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摘要

Largemouth bass (Micropterus salmoides) are routinely monitored for mercury (Hg) in Texas reservoirs. Other piscivorous game-fish that may have high concentrations of Hg, such as white bass (Morone chrysops) and white crappie (Pomoxis annularis), are monitored less frequently because they are difficult to capture. I examined Hg concentrations in largemouth bass, white bass, and white crappie from six Dallas-Fort Worth area reservoirs: Benbrook Lake, Eagle Mountain Lake, Grapevine Lake, Lake Lewisville, Joe Pool Lake, and Lake Ray Hubbard were examined. Fish were collected using electroshocking, trap nets and hook and line. For all species Hg concentrations were positively correlated with total length. Hg concentrations of each species were significantly different between reservoirs, indicating that some reservoirs were more contaminated with Hg than others. In the majority of reservoirs Hg concentrations in largemouth bass did not differ from Hg concentrations in white bass and white crappie. These data suggest that Hg concentrations in largemouth bass may be representative of Hg concentration in other piscivorous game-fish and is an appropriate indicator species for monitoring studies.
机译:常规监测大口黑鲈(Micropterus salmoides)在德克萨斯水库中的汞(Hg)。其他可能含有高浓度汞的食鱼的野味鱼,例如白鲈鱼(Morone chrysops)和白鲈鱼(Pomoxis ringis),由于难以捕获而受到较少的监测。我检查了六个达拉斯-沃思堡地区水库(本布鲁克湖,鹰山湖,葡萄树湖,刘易斯维尔湖,乔普尔湖和雷·哈伯德湖)中大口黑鲈,白鲈和白色薄饼中的汞浓度。使用电击,捕捞网和钩线收集鱼。对于所有物种,汞浓度与总长度呈正相关。每个物种的汞浓度在水库之间存在显着差异,表明某些水库比其他水库更受汞污染。在大多数水库中,大口黑鲈中的汞含量与白鲈和白色薄饼中的汞含量没有差异。这些数据表明,大嘴鲈鱼中的汞浓度可能代表其他食鱼的野味鱼类中的汞浓度,并且是监测研究的合适指示剂。

著录项

  • 作者

    Wadlington, Jacob Michael.;

  • 作者单位

    Texas Christian University.;

  • 授予单位 Texas Christian University.;
  • 学科 Environmental Health.;Agriculture Fisheries and Aquaculture.
  • 学位 M.S.
  • 年度 2011
  • 页码 21 p.
  • 总页数 21
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:44:24

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