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Differential survival and reproductive performance across three mitochondrial lineages in Melita plumulosa following naphthalene exposure

机译:萘暴露后三叶线虫三个线粒体谱系的差异存活和生殖性能

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摘要

Populations subject to anthropogenic contaminants often display altered patterns of genetic variation, including decreased genetic variability. Selective pressures of contaminant exposure are also reflected in differential tolerance between genotypes. An industrial chemical spill in a major eastern Australian waterway in July 2006 resulted in altered patterns of genetic variability in a nearby population of the amphipod, Melita plumulosa for up to one year post-spill, despite the site being declared clean after 48 h. Here, we investigate the toxicant response of three mitochondrial lines naturally occurring at the impacted site by comparing survivorship and life-history trait variables following naphthalene exposure. Overall, M. plumulosa demonstrated differential survivorship between mitochondrial lines under exposure to high concentrations of naphthalene. In addition, we identified differential fecundity and frequencies of gravidity in female amphipods between the mitochondrial haplotypes examined. These findings suggest that the patterns of genetic variability previously identified may be linked with differential tolerance and/or reproductive performance between mitochondrial lineages.
机译:受人为污染的人群通常表现出遗传变异的模式改变,包括遗传变异性降低。污染物暴露的选择性压力也反映在基因型之间的差异容忍度上。 2006年7月,澳大利亚东部主要水道发生了工业化学泄漏事故,导致溢流后长达一年的两栖动物近缘两栖动物Melita plumulosa的遗传变异模式发生了变化,尽管该场所在48小时后被宣布为干净的。在这里,我们通过比较萘暴露后的存活率和生活史特征变量,研究了在受影响部位自然发生的三种线粒体细胞系的毒性反应。总的来说,在暴露于高浓度萘的情况下,M。plumulosa表现出线粒体系之间的不同存活率。此外,我们确定了线粒体单倍型之间雌性两足动物的繁殖力和妊娠率的差异。这些发现表明,先前确定的遗传变异性模式可能与线粒体谱系之间的不同耐受性和/或生殖能力有关。

著录项

  • 来源
    《Chemosphere》 |2013年第6期|1064-1069|共6页
  • 作者单位

    School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney 2052, NSW, Australia;

    School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney 2052, NSW, Australia;

    Centre for Ecotoxicology, NSW Office of Environment and Heritage, P.O. Box 29, Lidcombe 1825, NSW, Australia;

  • 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

    Crustacean; Amphipod; Sediment; Biomonitoring; PAH;

    机译:甲壳类;两栖动物;沉淀;生物监测;多环芳烃;

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