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首页> 外文期刊>Journal of Hazardous Materials >The interactive effects of microcystin and nitrite on life-history parameters of the cladoceran Daphnia obtusa
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The interactive effects of microcystin and nitrite on life-history parameters of the cladoceran Daphnia obtusa

机译：微囊藻毒素与亚硝酸盐的相互作用对枝叶锦绣水蚤生活史参数的影响

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摘要

Elevated nitrite and microcystin concentrations co-occur during degradation of Microcystis blooms and are toxic to aquatic organisms. We studied the relative and combined effects of these on Daphnia obtusa life-history. Nitrite and microcystin-LR treatments were: 0,1,3 mg L~(-1) and 0,10,100,300μgL_(-1) respectively. Experiments were factorial with 12 treatment combinations. Incubations were 15 d and recorded: moult number; time to first batch of eggs; time to first clutch; size at first batch of eggs; size at first clutch; number of clutches per female; number of offspring per clutch; total offspring per female. Interactive effects of the toxins occurred for time to first batch of eggs and time to first clutch. The remaining traits were negatively affected by nitrite: a significant decrease occurred in number of offspring per clutch and total number of offspring per mother (both decreased by ~50%); total clutches per mother; number of moults; mother size at first clutch; and first appearance of eggs (primarily at the highest nitrite concentration). We support the literature, recognising nitrite is toxic, and although Mkrocystis is toxic to zooplankton, the main threat is not from dissolved microcystin but from degradative products such as nitrite.
机译：亚硝酸盐和微囊藻毒素浓度升高同时发生于微囊藻开花过程中，并对水生生物有毒。我们研究了它们对水蚤生活史的相对和综合影响。亚硝酸盐和微囊藻毒素-LR处理分别为：0.1 mg L〜（-1）和0,10,100,300μgL_（-1）。实验采用12种处理组合进行阶乘分析。孵化15 d并记录：换羽数；第一批鸡蛋的时间；首次离合器的时间；第一批鸡蛋的大小；第一离合器的尺寸；每个女性的离合器数量；每个离合器的后代数量；每个雌性的后代总数。毒素的相互作用作用发生在第一批卵的时间和第一次抓紧卵的时间之间。其余特征受到亚硝酸盐的负面影响：每个离合器的后代数量和每个母亲的后代总数均显着下降（均下降了约50％）。每个母亲的离合器总数；换羽数；一手抓紧妈妈的大小；卵的首次出现（主要是在最高的亚硝酸盐浓度下）。我们支持文献，认为亚硝酸盐是有毒的，尽管囊藻对浮游动物有毒，但主要威胁不是来自溶解的微囊藻毒素，而是来自降解产物（如亚硝酸盐）。

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  • 来源
    《Journal of Hazardous Materials》 |2011年第3期|p.113-118|共6页
  • 作者

    Zhou Yang; Fuhui Xiang; EwanJA Minter; Kai Lu; Yafen Chen; David J.S. Montagnes;

  • 作者单位

    Jiangsu Province Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, China,State Key Laboratory for Lake Science and Environment, Nanjing Institute of Geography and Limnology, the Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008,China;

    Jiangsu Province Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, China;

    Institute of Integrative Biology, Biosciences Bui/ding. University of Liverpool, Liverpool L69 7ZB, UK;

    Jiangsu Province Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, China;

    State Key Laboratory for Lake Science and Environment, Nanjing Institute of Geography and Limnology, the Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008,China;

    Institute of Integrative Biology, Biosciences Bui/ding. University of Liverpool, Liverpool L69 7ZB, UK;

  • 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

    daphnia obtusa; life-history; microcystin; nitrite; reproduction;

    机译：水蚤;生活史;微囊藻毒素;亚硝酸盐;生殖;

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