...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Exposure To Treated Sewage Effluent Disrupts Reproduction And Development In The Seasonally Breeding Ramshorn Snail (subclass: Pulmonata, Planorbarius Corneus)
【24h】

Exposure To Treated Sewage Effluent Disrupts Reproduction And Development In The Seasonally Breeding Ramshorn Snail (subclass: Pulmonata, Planorbarius Corneus)

机译：季节性繁殖的兰斯霍恩蜗牛暴露于经过处理的污水中，破坏了繁殖和发育（子类：肺菌，浮游生物科努伊斯）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Experiments were conducted to assess the impacts of exposure to sewage treatment works (STW) effluent upon the growth, reproductive function, and sexual development of the European mollusc, Planorbarius corneus under seasonally varying temperatures and photoperiodic conditions. In river water, a clear seasonal change in the number and weight of egg masses (during both 2003 and 2004), and in the number of eggs produced, was found, providing evidence for profound effects of both changing temperature and photoperiod on reproduction. Exposure to STW effluent caused disturbances in this seasonal reproductive cycle at all concentrations tested. The effects included significant dose-dependent increases in fecundity and in the overall length of the reproductive cycle in adult snails exposed to both 50% and 100% effluent relative to river water for a period of up to 14 weeks. Disturbances in the development of both the male and female gametes of the both the adult snails and their developmentally exposed offspring were also seen. These effects were more evident in the offspring than in the adults.
机译：进行了实验，以评估在季节性变化的温度和光周期条件下，暴露于污水处理厂（STW）废水对欧洲软体动物Planorbarius corneus的生长，生殖功能和性发育的影响。在河水中，发现了鸡蛋的数量和重量（在2003年和2004年期间）以及产卵的数量都有明显的季节性变化，这为温度和光周期变化对繁殖的深远影响提供了证据。在所有测试浓度下，暴露于STW废水都会在该季节性繁殖周期中造成干扰。这些影响包括成年蜗牛的生殖力和生殖周期的总长度有显着的剂量依赖性增加，而成年蜗牛暴露于相对于河水的50％和100％的污水中长达14周。还观察到了成年蜗牛的雄配子和雌配子及其发育暴露的后代的发育障碍。这些影响在后代中比在成年人中更明显。

著录项

相似文献

  • 外文文献
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