Exposure to treated sewage effluent disrupts reproduction and development in the seasonally breeding Ramshorn snail (subclass: Pulmonata, Planorbarius corneus).
Exposure to treated sewage effluent disrupts reproduction and development in the seasonally breeding Ramshorn snail (subclass: Pulmonata, Planorbarius corneus).
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DOI：
10.1021/es8020167
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发表时间：
2009-02
影响因子：
11.4
通讯作者：
N. Clarke;E. Routledge;A. Garner;D. Casey;Rachel Benstead;David Walker;B. Watermann;K. Gnass;A. Thomsen;S. Jobling
中科院分区：
文献类型：
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作者：
N. Clarke;E. Routledge;A. Garner;D. Casey;Rachel Benstead;David Walker;B. Watermann;K. Gnass;A. Thomsen;S. Jobling
进行实验以评估在季节性变化的温度和光周期条件下接触污水处理厂（STW）废水对欧洲软体动物（Planorbarius corneus）生长、生殖功能和性发育的影响。在河水中，发现了卵块数量和重量（2003年和2004年期间）以及产卵数量的明显季节性变化，这为温度和光周期变化对繁殖产生深远影响提供了证据。在所有测试浓度下，接触 STW 废水都会对该季节性繁殖周期造成干扰。这些影响包括成年蜗牛在暴露于相对于河水 50% 和 100% 的污水长达 14 周的时间内，繁殖力和生殖周期总体长度显着增加，呈剂量依赖性。成年蜗牛及其发育暴露的后代的雄性和雌性配子发育均受到干扰。这些影响在后代中比在成年人中更为明显。
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.