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首页> 外文期刊>Environmental toxicology and chemistry >REPRODUCTIVE HEALTH OF BASS IN THE POTOMAC, USA, DRAINAGE: PART 1. EXPLORING THE EFFECTS OF PROXIMITY TO WASTEWATER TREATMENT PLANT DISCHARGE
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REPRODUCTIVE HEALTH OF BASS IN THE POTOMAC, USA, DRAINAGE: PART 1. EXPLORING THE EFFECTS OF PROXIMITY TO WASTEWATER TREATMENT PLANT DISCHARGE

机译：美国波托马克中的生殖生殖健康，排水：第1部分。探讨邻近废水处理厂排放的影响

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摘要

Intersex (specifically, testicular oocytes) has been observed in male smallmouth bass (SMB; Micropterus dolomieu) and other centrarchids in the South Branch of the Potomac River, USA, and forks of the Shenandoah River, USA, during the past five years. This condition often is associated with exposure to estrogenic endocrine-disrupting chemicals in some fish species, but such chemicals and their sources have yet to be identified in the Potomac. In an attempt to better understand the plausible causes of this condition, we investigated the reproductive health, of bass sampled up- and downstream of wastewater treatment plant (WWTP) effluent point sources on the Potomac River in Maryland, USA. Smallmouth bass were sampled from the Conococheague Creek and the Monocacy River, and largemouth bass (LMB; Micropterus salmoides) were collected near the Blue Plains WWTP on the mainstem of the Potomac River. Chemical analyses of compounds captured in passive samplers at these locations also were conducted. A high prevalence of intersex (82-100%) was identified in male SMB at all sites regardless of collection area. A lower prevalence of intersex (23%) was identified in male LMB collected at the Blue Plains site. When up- and downstream fish were compared, significant differences were noted only in fish from the Conococheague. Differences included condition factor, gonad-osomatic index, plasma vitellogenin concentration, and estrogen to testosterone ratio. In general, chemicals associated with waste-water effluent, storm-water runoff, and agriculture were more prevalent at the downstream sampling sites. An exception was atrazine and its associated metabolites, which were present in greater concentrations at the upstream sites. It appears that proximity to effluent from WWTPs may influence the reproductive health of bass in the Potomac watershed, but inputs from other sources likely contribute to the widespread, high incidence of testicular oocytes.
机译：在过去的五年中，在美国波托马克河南支和美国谢南多厄河的河叉中，在雄性小嘴鲈鱼（SMB； Micropterus dolomieu）和其他中央生殖器中观察到雌雄同体（特别是睾丸卵母细胞）。这种状况通常与某些鱼类中暴露于破坏雌激素的内分泌化学物质有关，但是在波托马克中尚没有发现此类化学物质及其来源。为了更好地了解这种情况的可能原因，我们调查了美国马里兰州波托马克河上废水处理厂（WWTP）废水排放源上下游采样的低音的生殖健康状况。小口鲈鱼是从Conococheague Creek和Monocacy River取样的，大口鲈鱼（LMB； Micropterus salmoides）是在波托马克河主干道的蓝色平原污水处理厂附近收集的。还对这些位置的无源采样器中捕获的化合物进行了化学分析。在所有地点的男性SMB中，无论采集区域如何，都发现了性交流行（82-100％）。在Blue Plains站点收集到的雄性LMB中，雌雄同体的患病率较低（23％）。比较上下鱼时，仅发现来自Conococheague的鱼有显着差异。差异包括条件因素，性腺渗透压指数，血浆卵黄蛋白原浓度和雌激素与睾丸激素之比。通常，在下游采样点，与废水，雨水径流和农业有关的化学物质更为普遍。阿特拉津及其相关代谢物是一个例外，它们在上游部位的浓度更高。看来，污水处理厂废水的接近程度可能会影响波托马克河流域的鲈鱼的生殖健康，但其他来源的投入可能会导致睾丸卵母细胞的广泛，高发病率。

著录项

  • 来源
    《Environmental toxicology and chemistry》 |2009年第5期|1072-1083|共12页
  • 作者

    Luke R. Iwanowica; Vicki S. Blazer; Christopher P. Guy; Alfred E. Pinkney; John E. Mullican; David A. Alvarez;

  • 作者单位

    National Fish Health Research Laboratory, U.S. Geological Survey, 11649 Leetown Road, Kearneysville, West Virginia 25430;

    National Fish Health Research Laboratory, U.S. Geological Survey, 11649 Leetown Road, Kearneysville, West Virginia 25430;

    National Fish Health Research Laboratory, U.S. Geological Survey, 11649 Leetown Road, Kearneysville, West Virginia 25430;

    U.S. Fish and Wildlife Service, Chesapeake Bay Field Office, 177 Admiral Cochrane Drive, Annapolis, Maryland 21401;

    Maryland Department of Natural Resources Fisheries Service, Inland Fisheries Management Division, 10932 Putman Road, Thurmont, Maryland 21788, USA;

    U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    smallmouth bass; endocrine disruption; potomac; intersex;

    机译：小嘴鲈鱼内分泌干​​扰波托马克双性恋;

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