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首页> 外文期刊>Environmental Science & Technology >Transgenerational Adaptation to Pollution Changes Energy Allocation in Populations of Nematodes
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Transgenerational Adaptation to Pollution Changes Energy Allocation in Populations of Nematodes

机译：对污染的跨代适应改变了线虫种群的能量分配。

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摘要

Assessing the evolutionary responses of long-term exposed populations requires multigeneration ecotoxicity tests. However, the analysis of the data from these tests is not straightforward. Mechanistic models allow the in-depth analysis of the variation of physiological traits over many generations, by quantifying the trend of the physiological and toxtcological parameters of the model. In the present study, a bioenergetic mechanistic model has been used to assess the evolution of two populations of the nematode Caenorhabditis elegans in control conditions or exposed to uranium. This evolutionary pressure resulted in a brood size reduction of 60%. We showed an adaptation of individuals of both populations to experimental conditions (increase of maximal length, decrease of growth rate, decrease of brood size, and decrease of the elimination rate). In addition, differential evolution was also highlighted between the two populations once the maternal effects had been diminished after several generations. Thus, individuals that were greater in maximal length, but with apparently a greater sensitivity to uranium were selected in the uranium population. In this study, we showed that this bioenergetics mechanistic modeling approach provided a precise, certain, and powerful analysis of the life strategy of C. elegans populations exposed to heavy metals resulting in an evolutionary pressure across successive generations.
机译：评估长期接触人群的进化反应需要多代生态毒性测试。但是，对来自这些测试的数据进行分析并不简单。通过量化模型的生理学和毒理学参数的趋势，机理模型允许深入分析许多代的生理特征的变化。在本研究中，已使用生物能机理模型评估了在控制条件下或暴露于铀的线虫秀丽隐杆线虫的两个种群的进化。这种进化压力导致育雏尺寸减少了60％。我们显示了两种种群的个体都适应实验条件（最大长度的增加，生长速度的降低，育雏尺寸的降低和消除率的降低）。此外，一旦几代人的产妇影响减弱，这两个群体之间的差异进化也就突出了。因此，在铀种群中选择了最大长度较长但显然对铀敏感性更高的个体。在这项研究中，我们表明，这种生物能学机理建模方法对暴露于重金属的秀丽隐杆线虫种群的生命策略提供了精确，确定和有力的分析，从而导致了连续几代人的进化压力。

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  • 来源
    《Environmental Science & Technology》 |2015年第20期|12500-12508|共9页
  • 作者

    Benoit Goussen; Alexandre R.R. Pery; Jean-Marc Bonzom; Rimy Beaudouin;

  • 作者单位

    Unite Modeles pour l'Ecotoxicologie et la Toxicologie (METO), Institut National de l'Environnement Industriel et des Risques (INERIS), BP2, F-60550 Verneuil en Halatte, France,Institut de Radioprotection et de Surete Nucleaire (IRSN), PRP-ENV, SERIS, Laboratoire d'ECOtoxicologie des radionucleides (LECO), BP3, F-13115 Cadarache, France,Environment Department, University of York, Heslington, York, United Kingdom & Safety and Environmental Assurance Centre, Colworth Science Park, Unilever, Sharnbrook, Bedfordshire, United Kingdom;

    Unite Modeles pour l'Ecotoxicologie et la Toxicologie (METO), Institut National de l'Environnement Industriel et des Risques (INERIS), BP2, F-60550 Verneuil en Halatte, France,AgroParisTech, UMR 1402 EcoSys, F-78850 Thiverval-Grignon, France;

    Institut de Radioprotection et de Surete Nucleaire (IRSN), PRP-ENV, SERIS, Laboratoire d'ECOtoxicologie des radionucleides (LECO), BP3, F-13115 Cadarache, France;

    Unite Modeles pour l'Ecotoxicologie et la Toxicologie (METO), Institut National de l'Environnement Industriel et des Risques (INERIS), BP2, F-60550 Verneuil en Halatte, 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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