首页> 外文学位 >Chemical exposure dynamics of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCs) in green frog (Rana clamitans ) and bullfrog (Rana catesbeiana) tadpoles.
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Chemical exposure dynamics of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCs) in green frog (Rana clamitans ) and bullfrog (Rana catesbeiana) tadpoles.

机译:绿蛙(Rana clamitans)和牛蛙(Rana catesbeiana)poly中多氯联苯(PCBs)和有机氯农药(OCs)的化学暴露动力学。

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摘要

Studies were conducted to determine the effects of different environments and temperatures on chemical exposure dynamics in tadpoles. In the first study, green frog tadpoles (Rana clamitans) were dosed with Performance Reference Compound polychlorinated biphenyls (PRC PCBs) and placed into agricultural, municipal and reference watersheds near Windsor, Ontario, Canada. PRC PCBs were eliminated significantly faster than in previous laboratory studies, with elimination rate coefficients between 0.200 and 1.295 day-1. Tadpoles reached steady state within 23 days and tracked differences in chemical bioavailability among sites.;The elimination of PRC PCBs and DDT were evaluated in green frog and bullfrog (Rana catesbeiana) tadpoles at two temperatures (18 and 25°C). Temperature had no effects on elimination of PRCs or DDT. These results indicate that tadpoles are tolerant of moderate temperature changes in this range. Green frogs eliminated PRCs and DDT faster than bullfrogs (e.g. PRC 43 at 1.278 versus 0.421 day-1).
机译:进行研究以确定不同环境和温度对t化学暴露动力学的影响。在第一个研究中,给绿色青蛙((Rana clamitans)投放了性能参考化合物多氯联苯(PRC PCB),并放入加拿大安大略省温莎附近的农业,市政和参考分水岭。 PRC多氯联苯的消除速度比以前的实验室研究快得多,消除率系数在0.200至1.295天-1之间。 23在23天之内达到稳定状态,并跟踪了站点之间化学生物利用度的差异。在两个温度(18和25°C)下,对绿蛙和牛蛙(Rana catesbeiana)evaluated中的PRC PCB和DDT的消除进行了评估。温度对消除PRCS或DDT没有影响。这些结果表明t在该范围内能承受中等温度变化。绿蛙消灭PRCs和DDT的速度比牛蛙快(例如PRC 43在1.278对0.421天-1)。

著录项

  • 作者

    McCormack, Kimberley.;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Agriculture Wildlife Conservation.;Environmental Health.;Health Sciences Toxicology.
  • 学位 M.Sc.
  • 年度 2009
  • 页码 82 p.
  • 总页数 82
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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