...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Response of potentially toxic Pseudo-nitzschia (Bacillariophyceae) populations and domoic acid to environmental conditions in a eutrophied, SW Mediterranean coastal lagoon (Tunisia)
【24h】

Response of potentially toxic Pseudo-nitzschia (Bacillariophyceae) populations and domoic acid to environmental conditions in a eutrophied, SW Mediterranean coastal lagoon (Tunisia)

机译：富营养化的西南沿海地中海泻湖（突尼斯）中潜在有毒的拟南芥（Bacillariophyceae）种群和海藻酸对环境条件的响应

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

The population dynamics of Pseudo-nitzschia species from Bizerte Lagoon, northern Tunisia, were examined at six stations sampled monthly from March 2006 to February 2007. These are potential producers of the neurotoxin domoic acid (DA), cause of amnesic shellfish poisoning (ASP). Six morpho-species were counted: Pseudo-nitzschia brasiliana, Pseudo-nitzschia calliantha, Pseudo-nitzschia delica-tissima complex species, Pseudo-nitzschia multistriata, Pseudo-nitzschia pseudodelicatissima and 'Nitzschia seriata' group species. Canonical correspondence analysis was used to correlate species with the physical and chemical properties of the seawater, and the statistical significance of species-variable associations was tested using the Van Dobben method. The P. delicatissima complex species abundance was significantly positively correlated to turbidity, and negatively associated with temperature, nitrate, silicate and DA. P. brasiliana was more abundant in samples with higher salinity, nitrate, silicate and DA, and with lower nitrite, phosphate and turbidity. P. multistriata was negatively linked to salinity and nitrate, and positively correlated to temperature and turbidity. Abundances of the P. calliantha, P. pseudodelicatissima and 'N. seriata' group species were not statistically related to any of the variables examined. We document, for the first time, the incidence of DA in the Bizerte Lagoon (at four stations) and at one offshore station in Bizerte Bay (Mediterranean Sea). Total DA ranged from 0.5 to 2.0 μg DA I~(-1) and was detected only in October 2006, when lagoon waters were rich in nitrate and silicate and the salinity was elevated. The beginning of autumn was the highest potential risk period for ASP events, linked to elevated salinity and P. brasiliana growth. These findings allow local jurisdictions to prepare for Pseudo-nitzschia bloom events, and provide data for eventual predictive models of Pseudo-nitzschia bloom formation and toxin production in Bizerte Lagoon, in comparison with models elsewhere in the world.
机译：从2006年3月至2007年2月，每月从六个突尼斯采样站检查突尼斯北部比塞大泻湖的假性尼兹菌物种的种群动态。这可能是造成遗忘性贝类中毒（ASP）的神经毒素海藻酸（DA）的产生者。 。计数了六个形态物种：巴西拟南芥，拟南芥Calliantha，拟南芥delica-tissima复合物种，拟南芥多纹，拟南芥pseudodelicatissima和'Nitzschia seriata'组种。使用典范对应分析将物种与海水的物理和化学特性相关联，并使用Van Dobben方法测试了物种-变量关联的统计显着性。 P. delicatissima复合物种类的丰度与浊度显着正相关，而与温度，硝酸盐，硅酸盐和DA呈负相关。在较高盐度，硝酸盐，硅酸盐和DA的样品中，巴西假单胞菌含量较高，而亚硝酸盐，磷酸盐和浊度较低的样品中则更是如此。多纹体育与盐度和硝酸盐呈负相关，与温度和浊度呈正相关。 P. calliantha，P。pseudodelicatissima和'N. seriata'组物种与所检查的任何变量均无统计学关系。我们首次记录了在比塞大泻湖（四个站）和比塞大湾（地中海）一个离岸站的DA发病率。总DA的范围为0.5至2.0μgDA I〜（-1），仅在2006年10月才被检测到，当时泻湖水域富含硝酸盐和硅酸盐，盐度升高。秋季开始是ASP事件的最高潜在风险期，与盐度升高和巴西假单胞菌生长有关。这些发现使地方政府可以为拟南芥开花过程做准备，并与世界其他地方的模型相比，为比塞大泻湖中拟南芥开花形成和毒素产生的最终预测模型提供数据。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2012年第1期|p.95-104|共10页
  • 作者

    Ines Sahraoui; Boutheina Grami; Stephen S. Bates; Donia Bouchouicha; Mohamed Ali Chikhaoui; Hassine Hadj Mabrouk; Asma Sakka Hlaili;

  • 作者单位

    Laboratoire de Cytologie Vegetale et Phytoplanctonologie, Departement des Sciences de la Vie, Faculte des Sciences de Bizerte, Universite 7 novembre a Carthage, 7021 Zarzouna,Bizerte, Tunisia;

    Laboratoire de Cytologie Vegetale et Phytoplanctonologie, Departement des Sciences de la Vie, Faculte des Sciences de Bizerte, Universite 7 novembre a Carthage, 7021 Zarzouna,Bizerte, Tunisia;

    Fisheries and Oceans Canada, Gulf Fisheries Centre, P.O. Box 5030, Moncton, NB, ETC 9B6 Canada;

    Laboratoire de Cytologie Vegetale et Phytoplanctonologie, Departement des Sciences de la Vie, Faculte des Sciences de Bizerte, Universite 7 novembre a Carthage, 7021 Zarzouna,Bizerte, Tunisia;

    Laboratoire de Cytologie Vegetale et Phytoplanctonologie, Departement des Sciences de la Vie, Faculte des Sciences de Bizerte, Universite 7 novembre a Carthage, 7021 Zarzouna,Bizerte, Tunisia;

    Laboratoire de Cytologie Vegetale et Phytoplanctonologie, Departement des Sciences de la Vie, Faculte des Sciences de Bizerte, Universite 7 novembre a Carthage, 7021 Zarzouna,Bizerte, Tunisia;

    Laboratoire de Cytologie Vegetale et Phytoplanctonologie, Departement des Sciences de la Vie, Faculte des Sciences de Bizerte, Universite 7 novembre a Carthage, 7021 Zarzouna,Bizerte, Tunisia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    diatoms; domoic acid; pseudo-nitzschia; nutrients (mineral); eutrophication; lagoons; dynamic analysis; tunisia;

    机译：硅藻海藻酸假性痴呆营养（矿物质）;富营养化泻湖动态分析;突尼斯;

相似文献

  • 外文文献
  • 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