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首页> 外文期刊>Environmental Science & Technology >From Individual to Population Level Effects of Toxicants in the TubicifidBranchiura sowerbyi Using Threshold Effect Models in a Bayesian Framework
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From Individual to Population Level Effects of Toxicants in the TubicifidBranchiura sowerbyi Using Threshold Effect Models in a Bayesian Framework

机译：使用贝叶斯框架中的阈值效应模型，从毒药的个体效应到种群效应

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摘要

Effects of zinc were studied in the freshwater worm Branchiura sowerbyi using partial and full life-cycle tests. Only newborn and juveniles were sensitive to zinc, displaying effects on survival, growth, and age at first brood at environmentally relevant concentrations. Threshold effect models were proposed to assess toxic effects on individuals. They were fitted to life-cycle test data using Bayesian inference and adequately described life-history trait data in exposed organisms. The daily asymptotic growth rate of theoretical populations was then simulated with a matrix population model, based upon individual-level outputs. Population-level outputs were in accordance with existing literature for controls. Working in a Bayesian framework allowed incorporating parameter uncertainty in the simulation of the population-level response to zinc exposure, thus increasing the relevance of test results in the context of ecological risk assessment.
机译：使用部分和整个生命周期测试，研究了淡水蠕虫Branchiura sowerbyi中锌的影响。只有新生儿和青少年对锌敏感，在与环境有关的浓度下，对初生雏鸡的存活，生长和年龄都有影响。提出了阈值效应模型来评估对个体的毒性作用。使用贝叶斯推断将它们拟合到生命周期测试数据，并充分描述暴露生物的生命历史特征数据。然后，基于个体水平的输出，使用矩阵人口模型模拟理论人口的每日渐进增长率。人口水平的产出与对照的现有文献一致。在贝叶斯框架下进行的工作允许将参数不确定性纳入模拟人群水平对锌暴露的响应中，从而在生态风险评估的背景下增加了测试结果的相关性。

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  • 来源
    《Environmental Science & Technology》 |2010年第9期|P.3566-3571|共6页
  • 作者

    VIRGINIE DUCROT; rnELISE BILLOIR; rnALEXANDRE R. R. PERY; rnJEANNE GARRIC; SANDRINE CHARLES;

  • 作者单位

    INRA (Institut National de la Recherche Agronomique), UMR985 Ecologie et Sante des Ecosystemes, Equipe Ecotoxicologie et Qualite des Milieux Aquatiques, Agrocampus Quest, 65 rue de Saint Brieuc, F-35042, Rennes, France;

    rnUniversite de Lyon, F-69000, Lyon, Universite Lyon 1, CNRS, UMR5558 Laboratoire de Biometrie et Biologie Evolutive, F-69622, Villeurbanne, France;

    rnINERIS, Unite METO, Parc Alata - BP 2, F-60550 Verneuil-en-Halatte, France;

    rnLaboratoire d'Ecotoxicologie, Cemagref, 3bis quai Chauveau, CP 220, F-69009 Lyon, France;

    rnUniversite de Lyon, F-69000, Lyon, Universite Lyon 1, CNRS, UMR5558 Laboratoire de Biometrie et Biologie Evolutive, F-69622, Villeurbanne, France;

  • 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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