...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecotoxicology >Gonad histology and vitellogenin concentrations in brown trout (Salmo trutta) from Danish streams impacted by sewage effluent.
【24h】

Gonad histology and vitellogenin concentrations in brown trout (Salmo trutta) from Danish streams impacted by sewage effluent.

机译：受污水排放影响的丹麦溪流褐鳟（Salmo trutta）中的性腺组织学和卵黄蛋白原浓度。

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

Brown trout (Salmo trutta) collected from a number of Danish streams impacted by sewage effluent were examined for alterations to gonadal development and induction of vitellogenin synthesis. Among fish collected in June/July 2000/2001 and November 2002 higher levels of plasma vitellogenin were found in males from six streams impacted by sewage effluent compared to males from their respective reference sites. A direct non-competitive ELISA was developed for brown trout vitellogenin in order to perform the vitellogenin measurements. Intersex in females with no apparent relation to sewage effluent exposure was observed at all sites. In one stream, male brown trout with a very high level of vitellogenin were concomitantly found to have a high degree of vacuolation of the testes and a presence of only the early spermatogenic stage, spermatogonia. The cause of these alterations to the testis structure is unclear. However, as a high level of plasma vitellogenin in these males indicated estrogenic exposure, the vacuolation might also be a result of endocrine disruption causing delayed or disrupted spermatogenesis.
机译：检查了从受污水排放影响的许多丹麦溪流中收集的褐鳟（Salmo trutta）对性腺发育的改变以及卵黄蛋白原合成的诱导。在2000年6月/ 2000年7月/ 2002年11月和2002年11月收集的鱼中，血浆中卵黄蛋白原的含量较高，而受到污水排放影响的六种溪流中的卵黄蛋白生成素的含量高于其各自参考地点的雄性。为进行鳟鱼卵黄蛋白原的测定，开发了一种直接的非竞争性ELISA试剂盒。在所有地点均观察到雌性间性与污水暴露没有明显关系。在一条溪流中，同时发现具有高水平卵黄蛋白原的雄性棕鳟鱼具有很高的睾丸空泡化程度，并且仅存在早期的生精阶段即精原细胞增多症。这些睾丸结构改变的原因尚不清楚。但是，由于这些男性中血浆卵黄蛋白原的高水平表明雌激素暴露，因此空泡化也可能是内分泌破坏的结果，导致精子发生延迟或破坏。

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