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Studies on environmental steroids and their possible impacts on the endocrine physiology of pleuronectiformes in Santa Monica Bay.

机译：研究环境类固醇及其对圣莫尼卡湾胸膜肺炎内分泌生理的影响。

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摘要

Natural and synthetic estrogens have been found in bays associated with nearby municipal facilities at levels known to disrupt the endocrine systems of aquatic species. Santa Monica Bay (SMB) receives inputs of treated wastewater from 2 of the larger wastewater treatment plants (WWTP) in the world, highlighting this bay as a potential at-risk area for endocrine disruption. We investigated possible exposure effects of released effluent on endogenous steroid levels of 3 resident flatfishes, Pacific sanddab (Citharichthys sordidus ), English sole (Parophrys vetulus) and hornyhead turbot (Pleuronichthys verticalis), specifically, E2, T, 11-KT, and pharmaceutical EE2. Overall, seasonal fluctuations in steroid levels were observed corresponding to expected reproductive activity. Hornyhead turbot exhibited dramatically high E2 levels, with significantly higher levels in males at outfall locations; outfall-associated trends in E2 and T were observed in Pacific sanddab and English sole. EE2 was reported across all species at minimum levels, with significant levels seen in active females at outfall locations. The findings herein imply that exogenous contaminants, potentially including human-derived sex steroids, are being released into SMB and may impact endogenous levels of endocrine hormones in aquatic residents. Additional research is warranted to better understand the fate of effluent-released steroids and other contaminants.
机译：在与附近市政设施相关的海湾中发现了天然和合成雌激素，其水平已知会破坏水生物种的内分泌系统。圣塔莫尼卡湾（SMB）从世界上两个大型废水处理厂（WWTP）接收处理后的废水输入，这凸显了该湾是潜在的内分泌干扰高危地区。我们调查了释放的污水对3种常驻比目鱼，太平洋sand鱼（Citharichthys sordidus），英国（Parophrys vetulus）和角头y（Pleuronichthys verticalis）的内源类固醇水平的可能暴露影响，特别是E2，T，11-KT和药物EE2。总体而言，观察到类固醇水平的季节性波动与预期的生殖活动相对应。角头turbo的E2含量极高，而出水口的雄性E2含量却很高。 E2和T的排污口相关趋势在太平洋沙达卜和英语sole中观察到。据报道，所有物种的EE2含量均处于最低水平，在活动场所的活跃雌性动物中，EE2水平显着升高。本文的发现表明，外源性污染物（可能包括人源性类固醇）正在释放到SMB中，并可能影响水生居民内分泌激素的内源性水平。有必要进行更多的研究，以更好地了解废水释放的类固醇和其他污染物的命运。

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  • 作者

    Petschauer, Dawn M.;

  • 作者单位

    California State University, Long Beach.;

  • 授予单位 California State University, Long Beach.;
  • 学科 Biology Ecology.;Biology Animal Physiology.
  • 学位 M.S.
  • 年度 2008
  • 页码 62 p.
  • 总页数 62
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生态学（生物生态学）;生理学;
  • 关键词

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