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首页> 外文期刊>Chemosphere >Sublethal effects of copper on some biological traits of the amphipod Gammarus aequicauda reared under laboratory conditions
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Sublethal effects of copper on some biological traits of the amphipod Gammarus aequicauda reared under laboratory conditions

机译：铜对实验室条件下饲养的两栖类拟南芥某些生物学特性的亚致死作用

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摘要

The common and widespread copper contamination in marine coastal environments make toxicity data necessary to assess the aquatic hazard and risk of this metal. In the present study, the sublethal effects of copper on survival, growth and reproduction of Gammarus aequicauda were investigated. Amphipods were exposed for 77 d to 2 nominal copper concentrations (50, 100 u gL~(-1)). Survival was the most sensitive measure of effect and was significantly reduced, especially during early life stage (juveniles). Growth of amphipods was also negatively affected by copper and the growth impairment in G. aequicauda increases with increasing metal concentration. The reproductive traits were impaired by each of the copper concentrations, even if there were not any significant differences between control and copper treatments. The size at maturity increased with increasing copper, so the smallest ovigerous females in the control and copper treatments were 0.83 mm and 1.35 mm head length, respectively. There was a positive correlation between the brood size and the body size of the female in all treatments, whilst the fecundity (n°juveniles/female) decreased in the order control, 50 and 100 μgCu L~(-1). Copper demonstrates chronic toxicity to G. aequicauda at realistic environmental concentrations. The results of this study entail that the understanding of chronic toxicity of a substance, especially on population level effects, is crucial to assess the long-term effect of the substance in the ecosystem.
机译：海洋沿海环境中常见且广泛的铜污染使毒性数据对于评估这种金属的水生危害和风险非常必要。在本研究中，研究了铜对γ母马的存活，生长和繁殖的亚致死作用。将两栖动物暴露于2个标称铜浓度（50，100 u gL〜（-1））下77 d。生存是影响的最敏感指标，并且显着降低，尤其是在生命的早期阶段（青少年）。铜对两栖动物的生长也有不利影响，而随着金属浓度的增加，马鞭毛虫的生长障碍也会增加。即使对照和铜处理之间没有任何显着差异，每种铜的浓度也会损害生殖性状。成熟时的大小随铜的增加而增加，因此对照和铜处理中最小的有卵雌性头长分别为0.83 mm和1.35 mm。在所有处理中，雌性的育雏尺寸与体型之间呈正相关，而顺序控制，50和100μgCuL〜（-1）的繁殖力（n°少年/雌性）降低。铜在现实的环境浓度下表现出对马鞭草的慢性毒性。这项研究的结果要求了解一种物质的慢性毒性，尤其是对种群水平的影响，对于评估该物质在生态系统中的长期影响至关重要。

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  • 来源
    《Chemosphere》 |2013年第6期|1015-1022|共8页
  • 作者

    E. Prato; I. Parlapiano; F. Biandolino;

  • 作者单位

    Institute for Coastal Marine Environment, CNR - Via Roma, 3 74100 Taranto, Italy;

    Institute for Coastal Marine Environment, CNR - Via Roma, 3 74100 Taranto, Italy;

    Institute for Coastal Marine Environment, CNR - Via Roma, 3 74100 Taranto, Italy;

  • 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

    Chronic test; Copper; Gammarus aequicauda; Growth; Reproduction;

    机译：慢性测试铜;gammarus aequicauda;成长;再生产;

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