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首页> 外文期刊>Environmental Science & Technology >Nanoplastic Affects Growth of S. obliquus and Reproduction of D. magna
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Nanoplastic Affects Growth of S. obliquus and Reproduction of D. magna

机译：纳米塑料影响斜纹葡萄球菌的生长和D. magna的繁殖。

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摘要

The amount of nano- and microplastic in the aquatic environment rises due to the industrial production of plastic and the degradation of plastic into smaller partides. Concerns have been raised about their incorporation into food webs. Little is known about the fate and effects of nanoplastic, especially for the freshwater environment In this study, effects of nano-polystyrene (nano-PS) on the growth and photosynthesis of the green alga Scenedesmus obliquus and the growth, mortality, neonate production, and malformations of the zooplankter Daphnia magna were assessed. Nano-PS reduced population growth and reduced chlorophyll concentrations in the algae. Exposed Daphnia showed a reduced body size and severe alterations in reproduction. Numbers and body size of neonates were lower, while the number of neonate malformations among neonates rose to 68% of the individuals. These effects of nano-PS were observed between 0.22 and 103 mg nano-PS/L. Malformations occurred from 30 mg of nano-PS/L onward. Such plastic concentrations are much higher than presently reported for marine waters as well as freshwater, but may eventually occur in sediment pore waters. As far as we know, these results are the first to show that direct life history shifts in algae and Daphnia populations may occur as a result of exposure to nanoplastic.
机译：由于塑料的工业化生产以及塑料降解成较小的颗粒，水生环境中纳米塑料和微塑料的数量增加。人们对将它们掺入食物网提出了关注。关于纳米塑料的命运和作用，尤其是对于淡水环境，人们所知甚少。在这项研究中，纳米聚苯乙烯（nano-PS）对绿藻斜Scene藻的生长和光合作用以及其生长，死亡率，新生儿生产的影响，评估了浮游动物Daphnia magna的畸形和畸形。纳米PS减少了藻类种群的增长并降低了叶绿素的浓度。暴露的水蚤表现出体型减小和生殖严重改变。新生儿的数量和体型较低，而新生儿中畸形的数量上升到个体的68％。在0.22至103 mg nano-PS / L之间观察到了nano-PS的这些作用。从30 mg的纳米PS / L起开始出现畸形。这种塑料浓度比目前报道的海水和淡水高得多，但最终可能发生在沉积物孔隙水中。据我们所知，这些结果是第一个表明藻类和水蚤种群的直接生活史转变可能是由于暴露于纳米塑料而发生的。

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  • 来源
    《Environmental Science & Technology》 |2014年第20期|12336-12343|共8页
  • 作者

    Ellen Besseling; Bo Wang; Miquel Luerling; Albert A. Koelmans;

  • 作者单位

    Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands,IMARES - Institute for Marine Resources & Ecosystem Studies, Wageningen UR, P.O. Box 68, 1970 AB IJmuiden, The Netherlands;

    Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands;

    Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands;

    Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands,IMARES - Institute for Marine Resources & Ecosystem Studies, Wageningen UR, P.O. Box 68, 1970 AB IJmuiden, The Netherlands;

  • 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);
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