• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IT in Medicine and Education (ITME), 2011 International Symposium on >Toxicity of the Herbicide Butchlor Effects on early period of postembryonic development of Toad Bufo bufo Gargarizans and Bufo naddei Strauch
【24h】

Toxicity of the Herbicide Butchlor Effects on early period of postembryonic development of Toad Bufo bufo Gargarizans and Bufo naddei Strauch

机译：除草剂丁草胺的毒性对蟾蜍和中华蟾蜍胚后发育早期的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present study was undertaken to determine the 24–96h LC50 of herbicide butachlor in the early period of postembryonic development for Bufo bufo Gargarizans and Bufo naddei Strauch and simultaneously observe the developmental changes caused by the toxicity of the herbicide butachlor. At first, 10–20 tadpoles of B. bufo and B.naddei in gosner20 and gosner25 were put into 5 exposure groups and 1 control group respectively, finding their LC50s; then chose 60 tadpoles of B.bufo and B.naddei in gosner20 respectively, in accordance with the concentrations of 1/10, 1/100 and 1/1000 of their LC50s for exposure, measuring the body length of every group for 5 tadpoles after every 3 days. From the start of exposure, we kept continuous observation on the behavior changes. The most typical symptom of tadpoles in the period of acute experiment was the change of tail swing. The LC50 values of butachlor of different concentrations were found respectively. In the period of chronic exposure, the body length of B.bufo and B. naddei was affected significantly by the toxicity of the herbicide butachlor. The study shows that maybe tadpoles in the former stage of the early period of postembryonic development have greater tolerance to herbicide butachlor than the tadpoles in the latter stage; and B.naddei has greater tolerance to herbicide butachlor than B.bufo in the early period of postembryonic development.
机译：本研究旨在确定Bufo bufo Gargarizans和Bufo naddei Strauch胚胎后发育早期除草剂丁草胺的24–96h LC 50 ，同时观察其毒性引起的发育变化。除草剂丁草胺。首先，将gosner20和gosner25中的bu。bufo和B.naddei的10-20个into分别置于5个暴露组和1个对照组中，发现它们的LC 50 s。然后根据gosner20中LC 50 的浓度的1 / 10、1 / 100和1/1000分别在gosner20中选择60只t。每三天5只t，每组的体长。从接触开始，我们就不断观察行为变化。在急性实验期间，of最典型的症状是尾摆的变化。分别测定了不同浓度的丁草胺的LC 50 值。在慢性暴露期间，除草剂丁草胺的毒性对B.bufo和B. naddei的体长有显着影响。研究表明，在胚胎发育后早期的the可能比后期的herb对除草剂丁草胺具有更大的耐受性。在胚后发育的早期，纳德氏菌对除草剂丁草胺的耐受性比布法氏菌更大。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号