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首页> 外文期刊>Environmental toxicology and chemistry >A CRITICAL BODY RESIDUE APPROACH FOR PREDICTING PERSISTENT BIO ACCUMULATIVE TOXICANT EFFECTS ON REPRODUCTION AND POPULATION DYNAMICS OF MEIOBENTHIC COPEPODS
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A CRITICAL BODY RESIDUE APPROACH FOR PREDICTING PERSISTENT BIO ACCUMULATIVE TOXICANT EFFECTS ON REPRODUCTION AND POPULATION DYNAMICS OF MEIOBENTHIC COPEPODS

机译：预测持久性生物累积毒物对中足PE足类动物繁殖和种群动态的关键身体残留法

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摘要

Critical body residues (CBRs) are the measured tissue toxicant concentrations yielding a median dose-response on a dry-weight or lipid-normalized basis. They facilitate management decisions for species protection using tissue analysis. Population CBR is the mean dose yielding 50% population suppression and was predicted here in Amphiascus tenuiremis for flpronil sulfide (FS) using lifetables and the Leslie matrix. Microplate bioassays (ASTM E-2317-14) produced biomass sufficient for dry mass and lipid-normalized CBR estimates of reproduction (fertility) and population growth suppression. Significant FS toxic effects were delayed naupliar development (at ≧0.l0μgL~(-1)), delayed copepodite development (at 0.85μgL~(-1)), decreased reproductive success (at > 0.39 μgL~(-1)), and decreased offspring production (at 0.85 μgL~(-1)). A reproductive median effective concentration (EC50) of 0.16μgL~(-1) (95% CI: 0.12-0.21 μgL~(-1)) corresponded to an adult all-sex CBR and lipid-normalized CBR of 0.38pg FS.μg~(-1) dry weight (95% CI: 0.27-0.52pg FS • μg~(-1)) or 2.8pg FS-μg~(-1) lipid (95% CI: 2.2-3.6pg FS.μg~(-1)), respectively. Copepod log bioconcentration factor (BCF) = 4.11 ±0.2. Leslie matrix projections regressed against internal dose predicted fewer than five gravid females in a population by the third generation at 0.39 and 0.85 μg FS • L~(-1) (i.e., 9.6-10.2 μg FS • μg~(-1) lipid), and 50% population suppression at a CBR of 1.6 pg FS • μg~(-1) lipid. This more integrative population CBR as a management tool would fall 1.75 times below the CBR for the single most sensitive endpoint—fertility rate.
机译：关键身体残留物（CBR）是测得的组织毒物浓度，在干重或脂质归一化的基础上产生中值剂量反应。它们有助于通过组织分析为物种保护制定管理决策。种群CBR是产生50％种群抑制的平均剂量，在此处使用生命表和Leslie矩阵预测了在两栖类双歧杆菌中氟虫腈硫化物（FS）的使用。微孔板生物测定法（ASTM E-2317-14）产生的生物量足以用于干燥质量和脂质归一化CBR估计繁殖力（繁殖力）和种群增长抑制。 FS的显着毒性作用是延迟幼核发育（≥0.10μgL〜（-1）），延缓胭脂白发育（0.85μgL〜（-1）），生殖成功降低（> 0.39μgL〜（-1）），并降低了后代产量（为0.85μgL〜（-1））。生殖中位有效浓度（EC50）为0.16μgL〜（-1）（95％CI：0.12-0.21μgL〜（-1））对应于成人全性别CBR和脂质标准化CBR为0.38pgFS.μg 〜（-1）干重（95％CI：0.27-0.52pg FS•μg〜（-1））或2.8pgFS-μg〜（-1）脂质（95％CI：2.2-3.6pgFS.μg〜 （-1））。 pe足类生物浓度系数（BCF）= 4.11±0.2。 Leslie矩阵投影相对于内部剂量的回归预测到第三代时，在0.39和0.85μgFS•L〜（-1）时（即9.6-10.2μgFS•μg〜（-1）脂质），人口中少于五个妊娠的雌性。 ，并且在1.6 pg FS•μg〜（-1）脂质的CBR下抑制50％的种群。对于单个最敏感的终点（生育率），这种更具综合性的人口CBR作为管理工具将比CBR低1.75倍。

著录项

  • 来源
    《Environmental toxicology and chemistry》 |2012年第5期|p.1076-1082|共7页
  • 作者

    G. Thomas Chandler; P. Lee Ferguson; W.W. Klauber; K.M. Washburn;

  • 作者单位

    Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA;

    Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, USA Department of Civil and Environmental Engineering, Nicholas School of the Environment, Duke University, Durham, North Carolina, USA;

    Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA;

    Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, 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
  • 中图分类
  • 关键词

    agricultural chemicals; aquatic toxicology; bioaccumulative compounds; estuarine toxicology; population modeling;

    机译：农药;水生毒理学;生物蓄积性化合物;河口毒理学;人口模型;

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