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首页> 外文期刊>Chemosphere >DDT polluted meltwater affects reproduction in the mussel Dreissena polymorpha
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DDT polluted meltwater affects reproduction in the mussel Dreissena polymorpha

机译：滴滴涕污染的融水影响贻贝贻贝的繁殖

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摘要

The zebra mussel Dreissena polymorpha was used to follow the recently reported DDT pollution of Lake Iseo (N. Italy). Histopathological analyses were performed on mussels sampled from March 2005 to April 2006, when high DDT levels were found, and results were compared to those from mussels sampled in 2001/2002, before the pollution event. During the 2005/2006 reproductive season, the first male gamete release happened one month later than the onset of spawning in females who showed a high number of specimens with degenerating oocytes, despite a regular pattern of gametogenesis. These results indicated a disrupting action of DDT on the mechanisms involved in sperm release, and a disturbance in the game-togenic phases of the ovary. Pathological pictures in the digestive gland of many mussels from both 2001/ 2002 and 2005/2006 have also been observed, but DDT pollution is unable to explain the presence of pathological fields in mussels during 2001/2002, for which a previously reported contamination seems to be the main cause. A possible role of DDT in skewing the sex ratio towards a predominance of females was also discussed, considering the high number of females sampled in 2005/2006.
机译：斑马贻贝Dreissena polymorpha用于追踪最近报道的伊塞奥湖（意大利北部）的滴滴涕污染。对2005年3月至2006年4月发现高滴滴涕含量的贻贝进行了组织病理学分析，并将结果与​​污染事件发生之前在2001/2002年取样的贻贝进行了比较。在2005/2006生殖季节中，首次雄性配子的释放比雌性产卵开始晚了一个月，尽管配子发生规律，但雌性显示出大量带有退化卵母细胞的标本。这些结果表明，滴滴涕对精子释放所涉及的机制有破坏作用，并且在卵巢的生殖形成期受到干扰。还观察到了2001/2002和2005/2006期间许多贻贝的消化腺的病理学图像，但是DDT污染无法解释2001/2002年期间贻贝的病理学领域，以前报道的污染似乎是成为主要原因。考虑到2005/2006年抽样的女性人数众多，还讨论了滴滴涕在使性别比向女性占主导地位方面可能发挥的作用。

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  • 来源
    《Chemosphere》 |2009年第10期|1380-1385|共6页
  • 作者

    Renato Bacchetta; Paride Mantecca;

  • 作者单位

    Dipartimento di Biologia, Universita degli Studi di Milano, Sezione di Zoologia e Citologia,Via Celoria, 26, 20133 Milano, Italy;

    Dipartimento di Scienze dell'Ambiente e del Territorio, Universitd degli Studi di Milano-Bicocca, Piazza delle Scienza, 1 - 20126 Milano, Italy;

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

    zebra mussel; histopathology; biomonitoring; reproductive cycle; DDT;

    机译：斑马贻贝组织病理学生物监测生殖周期滴滴涕;

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