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首页> 外文期刊>Chemosphere >Estuarine sediment acute toxicity testing with the European amphipod Corophium multisetosum Stock, 1952
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Estuarine sediment acute toxicity testing with the European amphipod Corophium multisetosum Stock, 1952

机译：1952年使用欧洲两栖类Corophium multisetosum股票进行河口沉积物急性毒性测试

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摘要

This study assessed the use of the European amphipod Corophium multisetosum Stock [Stock, J.H., 1952. Some notes on the taxonomy, the distribution and the ecology of four species of the genus Corophium (Crustacea, Malacostraca). Beaufortia 21,1-10] in estuarine sediment acute toxicity testing. The sensitivity of adults to the reference toxicant CdCl_2 was determined in water-only 96 h exposures in salinity 2. LC_(50) values ranged from 0.33 mgCd~(2+) L~(-1) at 22 ℃ to 0.57 mgCd~(2+) L~(-1) at 15 ℃. Adult survival was studied in control sediment with water salinity from 0 to 36 and with fine particles content (<63 μm) from 2% to 97% of total sediment, dry weight. Experiments were conducted at 15,18 and 22 ℃ and the results indicate that the species can be used under the full salinity range although higher mortality was observed at the lower salinity in the higher water temperature, and at the higher salinity in the lower water temperature. The species also tolerated the studied range of sediment fines content and showed the highest sensitivity at intermediate values of fines, especially at the higher temperature, thus advising that tests which have to accommodate sediments with a wide range in fines content should preferably be conducted at 15 ℃ rather than at 22 ℃. The response in natural sediments was studied in samples collected yearly from 1997 to 2006, at a site located off the Tagus Estuary, western Portugal. A major flood event in winter 2000-2001 induced detectable alterations in sediment baseline descriptors (grain-size, redox potential and total volatile solids), organic contaminants (PAHs, PCBs, DDT metabolites and γ-HCH) and the macrofauna benthic community. Mortality of the amphipod diminished significantly from the before to the after flood period, in close agreement with diminishing sediment contamination and increasing benthic fauna diversity, in the same time period. C. multisetosum is suitable to conduct acute sediment toxicity tests and presents good potential for the development of a full life-cycle sediment test, due to its amenability to laboratory culture and high survival in the control sediment.
机译：这项研究评估了欧洲两栖动物Corophium multisetosum Stock [Stock，J.H.，1952年。关于一些Corophium（Crustacea，Malacostraca）属的分类，分布和生态学的一些说明。 Beaufortia 21，1-10]在河口沉积物的急性毒性试验。在盐度为2的仅水接触96小时的情况下，确定成年人对参考毒物CdCl_2的敏感性。LC_（50）值的范围为22℃时的0.33 mgCd〜（2+）L〜（-1）至0.57 mgCd〜（ 2+）在15℃时L〜（-1）。在盐度为0至36且干重为2％至97％的细颗粒颗粒含量（<63μm）的对照沉积物中研究了成年存活率。在15、18和22℃下进行了实验，结果表明该物种可以在整个盐度范围内使用，尽管在较高水温下较低盐度下以及在较低水温下较高盐度下观察到较高的死亡率。 。该物种还可以忍受研究的沉积物细粉含量范围，并且在细粉中间值时表现出最高的灵敏度，尤其是在较高温度下，因此建议必须在15℃下进行的试验必须容纳大范围细粉含量的沉积物。 ℃而不是22℃。在1997年至2006年期间，每年在葡萄牙西部塔霍河口附近的一个地点收集的样本中研究了天然沉积物中的响应。 2000-2001年冬季的一次重大洪灾事件引起了沉积物基线特征（粒度，氧化还原电位和总挥发性固体），有机污染物（PAH，PCBs，DDT代谢物和γ-HCH）和大型动物底栖生物的可检测变化。在同一时期，两栖动物的死亡率从洪灾前到洪灾后大大降低，这与减少沉积物污染和增加底栖动物多样性密切相关。 C. multisetosum适用于进行急性沉积物毒性测试，并且由于其适合实验室培养和在对照沉积物中的高存活率，因此具有开展整个生命周期沉积物测试的良好潜力。

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  • 来源
    《Chemosphere》 |2009年第10期|1323-1333|共11页
  • 作者

    Ana Re; Rosa Freitas; Leandro Sampaio; Ana Maria Rodrigues; Victor Quintino;

  • 作者单位

    CESAM (Centra de Estudos do Ambiente e Mar), Departmento de Biologia, Universidade de Aveiro, 3810 - 193 Aveiro, Portugal;

    CESAM (Centra de Estudos do Ambiente e Mar), Departmento de Biologia, Universidade de Aveiro, 3810 - 193 Aveiro, Portugal;

    CESAM (Centra de Estudos do Ambiente e Mar), Departmento de Biologia, Universidade de Aveiro, 3810 - 193 Aveiro, Portugal;

    CESAM (Centra de Estudos do Ambiente e Mar), Departmento de Biologia, Universidade de Aveiro, 3810 - 193 Aveiro, Portugal;

    CESAM (Centra de Estudos do Ambiente e Mar), Departmento de Biologia, Universidade de Aveiro, 3810 - 193 Aveiro, Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    sediment toxicity; acute bioassay; amphipod; corophium multisetosum;

    机译：沉积物毒性急性生物测定两栖动物七叶树;

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