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首页> 外文期刊>Limnology >Acute toxic impacts of three heavy metals (copper, zinc, and cadmium) on Diaphanosoma brachyurum (Cladocera: Sididae)
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Acute toxic impacts of three heavy metals (copper, zinc, and cadmium) on Diaphanosoma brachyurum (Cladocera: Sididae)

机译：三种重金属（铜，锌和镉）对短枝假丝酵母的急性毒性影响

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摘要

Diaphanosoma brachyurum (Cladocera: Sididae) is a common limnetic species in summer-temperate and tropical water bodies. Few studies have investigated the sensitivity of D. brachyurum to toxic chemicals despite this species often being dominant in natural lakes and ponds. We performed acute toxicity tests of three heavy metals, copper (Cu), zinc (Zn), and cadmium (Cd), to D. brachyurum. For D. brachyurum, the lethal concentration (LC)50 values of Cu (24-h LC50 = 16.4 μg/L, 48-h LC50 = 10.4 μg/L) and Zn (24-h LC50 = 253.4 μg/L, 48-h LC50 = 174.1 μg/L) were lower than those for D. magna, one of the most used test organisms for toxic chemicals. On the other hand, for D. brachyurum the 24-h LC50 of Cd (166.4 μg/L) was much greater than that for D. magna, and the 48-h LC50 of Cd (69.8 μg/L) was comparable. Our results indicate that D. brachyurum may be more strongly influenced by Zn and Cu than is D. magna. It is likely that the summer plankton community in which Diaphanosoma species is dominant is more sensitive to heavy metals than a community in which Daphnia species are dominant.
机译：Brachyurum Diaphanosoma brachyurum（Cladocera：Sididae）是在夏季温带和热带水域中常见的边缘类。很少有研究调查短枝杜鹃对有毒化学物质的敏感性，尽管该物种通常在天然湖泊和池塘中占主导地位。我们进行了三种重金属，铜（Cu），锌（Zn）和镉（Cd）对短枝线虫的急性毒性测试。对于短臂梭菌，铜的致死浓度（LC）50 值（24-h LC50 = 16.4μg/ L，48-h LC50 = 10.4μg/ L）和Zn （24 h LC50 = 253.4μg/ L，48 h LC50 = 174.1μg/ L）低于D. magna，后者是最常用的有毒化学物质之一。另一方面，对于短枝杜鹃，镉的24 h LC50 （166.4μg/ L）大大大于D. magna和镉的48h LC50 （69.8）。微克/升）具有可比性。我们的结果表明，D。brachyurum可能比D.magna更受Zn和Cu的影响。与以蚤属为主导的群落相比，以透明藻属为主导的夏季浮游生物群落对重金属的敏感性更高。

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  • 来源
    《Limnology》 |2011年第2期|p.193-196|共4页
  • 作者

    Hiroyuki Mano; Yutaka Ogamino; Masaki Sakamoto; Yoshinari Tanaka;

  • 作者单位

    Research Center for Environmental Risk, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan;

    Research Center for Environmental Risk, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan;

    Department of Environmental Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan;

    Research Center for Environmental Risk, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Acute toxicity; Cladocera; Heavy metal; Zooplankton;

    机译：急性毒性;角藻;重金属;佐兰克顿;

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