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首页> 外文期刊>Environmental Science & Technology >Species-Specific Characteristics Influence Contaminant Accumulation Trajectories and Signatures Across Ontogeny in Three Pelagic Shark Species
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Species-Specific Characteristics Influence Contaminant Accumulation Trajectories and Signatures Across Ontogeny in Three Pelagic Shark Species

机译：特异性特征在三种骨质鲨鱼种中影响患有污染物累积轨迹和患有组细胞的签名

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摘要

Factors influencing organic contaminant accumulation in sharks, especially across ontogeny, are not well-known. Contaminant concentrations were measured in three species of sharks (Blue, Shortfin Mako, and Common Thresher) across a range of size classes (neonatal to adult) that vary in their ecological and physiological characteristics. Empirical data was compared to a theoretical framework that predicted the shape of lifetime accumulation curves. We found that a one-size-fits-all accumulation model was not appropriate as species-specific characteristics had a significant effect on contaminant accumulation trajectories. Maternal offloading likely has an important effect on determining neonatal shark contaminant starting points, and trophic ecology and physiology may interact to affect the shape of species' contaminant accumulation curves. Makos were found to have the highest accumulation potential and Blues the lowest, with Threshers being intermediate in accumulation potential. Changes in species' ecology and/or physiology were also reflected in contaminant signature changes over ontogeny. If contaminant concentrations are to be used as a proxy for risk, species-specific characteristics need to be taken into account when estimating contaminant exposure and its potential negative effects on shark health and human consumption safety.
机译：影响鲨鱼的有机污染物积累的因素，特别是在组细胞上，是众所周知的。污染物浓度在三种鲨鱼（蓝色，短氟胺Mako和常见的播种机）中测量，横跨一系列大小的类（新生儿到成人），其生态和生理特征不同。将经验数据与预测寿命累积曲线形状的理论框架进行了比较。我们发现单尺寸适合的所有累积模型不合适，因为物种特征对污染物累积轨迹有显着影响。母体卸载可能对确定新生儿鲨污染物起点的重要作用，营养生态学和生理学可能相互作用以影响物种污染物积累曲线的形状。发现MAKOS具有最高的积累潜力和最低的蓝调，具有中间累积电位中间的阈值。物种生态学和/或生理学的变化也反映在污染物签名变化上对组织发生。如果要用作风险的污染物浓度，则需要在估算污染物暴露时需要考虑物种特征及其对鲨鱼健康和人类消费安全的潜在负面影响。

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  • 来源
    《Environmental Science & Technology》 |2019年第12期|6997-7006|共10页
  • 作者

    Lyons Kady; Kacev Dovi; Preti Antonella; Gillett David; Dewar Heidi; Kohin Suzanne;

  • 作者单位

    Georgia Aquarium 225 Baker St NW Atlanta GA 30313 USA;

    Southwest Fisheries Sci Ctr La Jolla CA 92037 USA|Southern Calif Coastal Water Res Project Costa Mesa CA 92626 USA;

    Southwest Fisheries Sci Ctr La Jolla CA 92037 USA|Univ Calif Santa Cruz Santa Cruz CA 95064 USA;

    Southern Calif Coastal Water Res Project Costa Mesa CA 92626 USA;

    Southwest Fisheries Sci Ctr La Jolla CA 92037 USA;

    Southwest Fisheries Sci Ctr La Jolla CA 92037 USA;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
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