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首页> 外文期刊>Environmental Science & Technology >Tracking Dietary Sources of Short- and Medium-Chain Chlorinated Paraffins in Marine Mammals through a Subtropical Marine Food Web
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Tracking Dietary Sources of Short- and Medium-Chain Chlorinated Paraffins in Marine Mammals through a Subtropical Marine Food Web

机译：通过亚热带海洋食品网追踪海洋哺乳动物中短链和中链氯化石蜡的饮食来源

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摘要

Our previous study revealed an elevated accumulation of short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs) in marine mammals from Hong Kong waters in the South China Sea. To examine the bioaccumulation potential and biomagnification in these apex predators, we sampled the dietary items of marine mammals and tracked the sources of SCCPs and MCCPs through a marine food web in this region. Sixteen fish species, seven crustacean species, and four mollusk species were collected, and the main prey species were identified for two species of marine mammals. Concentrations of ΣSCCPs and ΣMCCPs in these collected species suggested a moderate pollution level in Hong Kong waters compared to the global range. Lipid content was found to mediate congener-specific bioaccumulation in these marine species. Significantly positive correlations were observed between trophic levels and concentrations of ΣSCCPs or ΣMCCPs (p < 0.05). Trophic magnification factors for ΣSCCPs and ΣMCCPs were 4.29 and 4.79, indicating that both of them have trophic magnification potentials. Elevated biomagnification of SCCPs and MCCPs from prey species to marine mammals was observed. This is the first report of dietary source tracking of SCCPs and MCCPs in marine mammals. The elevated biomagnification between prey and marine mammals raises environmental concerns about these contaminants.
机译：我们之前的研究表明，南海香港水域的海洋哺乳动物中短链氯化石蜡（SCCP）和中链氯化石蜡（MCCP）的积累量较高。为了检查这些先头天敌的生物蓄积潜力和生物放大倍数，我们对海洋哺乳动物的饮食进行了采样，并通过该地区的海洋食物网跟踪了短链氯化石蜡和多氯联苯酚的来源。收集了16种鱼类，7种甲壳类和4种软体动物，并确定了两种海洋哺乳动物的主要猎物。在这些采集物种中，ΣSCCP和ΣMCCP的浓度表明，与全球范围相比，香港水域的污染水平中等。发现脂质含量介导了这些海洋物种中同类物质的生物富集。营养水平与ΣSCCP或ΣMCCP的浓度之间存在显着的正相关关系（p <0.05）。 ΣSCCP和ΣMCCP的营养放大倍数分别为4.29和4.79，表明它们都具有营养放大倍数。观察到了SCCPs和MCCPs从猎物物种到海洋哺乳动物的生物放大作用。这是海洋哺乳动物中短链氯化石蜡和MCCP饮食来源追踪的第一份报告。猎物和海洋哺乳动物之间生物放大倍数的提高引起了对这些污染物的环境关注。

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  • 来源
    《Environmental Science & Technology》 |2017年第17期|9543-9552|共10页
  • 作者

    Lixi Zeng; James C. W. Lam; Hui Chen; Bibai Du; Kenneth M. Y. Leung; Paul K. S. Lam;

  • 作者单位

    School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China;

    Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, China,State Key Laboratory in Marine Pollution, Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for Sustainable Use of Marine Biodiversity, City University of Hong Kong, Hong Kong SAR, China;

    School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China;

    School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China;

    The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong SAR, China;

    State Key Laboratory in Marine Pollution, Research Centre for the Oceans and Human Health, Shenzhen Key Laboratory for Sustainable Use of Marine Biodiversity, City University of Hong Kong, Hong Kong SAR, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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