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首页> 外文期刊>Journal of environmental science and health >Investigation of differences in sensitivity between 3 strains of Daphnia magna (crustacean Cladocera) exposed to malathion (organophosphorous pesticide)
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Investigation of differences in sensitivity between 3 strains of Daphnia magna (crustacean Cladocera) exposed to malathion (organophosphorous pesticide)

机译：3种暴露于马拉硫磷（有机磷农药）的大型蚤（Daphnia magna）（甲壳类）的敏感性差异的调查

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摘要

Acute and chronic ecotoxic effects of organophosphorous insecticide malathion (Fyfanon 50 EC 500 g L~(-1)) were investigated on three strains of Daphnia magna. The nominal effective concentrations immobilizing 50% (EC50) of Daphnia after 24 and 48 h were 0.53 and 0.36 μg L~(-1) 0.70 and 0.44 μg L~(-1) and 0.75 and 0.46 μg L~(-1) for the strains 1, 2, and 3 respectively. There was an increase in malathion ecotoxicity with time of exposure as confirmed by chronic studies. In fact, after 21 days of exposure, significant effects on survival (lowest observed effect concentration or LOECs) were recorded at malathion concentrations of 22, 220 and 230 ng L~(-1) for strains 1, 2 and 3 respectively. Other endpoints were also examined, including reproduction (with different parameters), body length and embryo toxicity. ICs10 and ICs20 were calculated for these different parameters. ICs10 ranged from 4.7 to more than 220 ng L~(-1) for the three tested strains. The most sensitive parameter was the number of neonates per adult (ICs10 = 4.7 and 10.8 ng L~(-1) for strains 1 and 2 respectively) or the number of broods (IC10 = 10 ng L~(-1) for strain 3). Moreover, an increase in embryo development abnormalities was observed at the two highest tested malathion concentrations. Abnormalities comprised undeveloped second antennae, curved or unextended shell spines, and curved post-abdomen spines in live neonates. Results suggest that malathion could act as an endocrine disruptor in D. magna as it interferes with development. It also induces a significant decrease in acetylcholinesterase (AChE) activities for the three strains. Both strains 2 and 3 seemed more sensitive (LOECs = 60 ng L~(-1)) than strain 1 (LOEC = 120 ng L~(-1)). Our results suggest that the AChE activity response can also be used as a biomarker of inter-strain (or inter-clonal) susceptibility (i.e. strain (or clone)-specific response).
机译：研究了有机磷杀虫剂马拉硫磷（Fyfanon 50 EC 500 g L〜（-1））对三株水蚤的急性和慢性生态毒性作用。 24和48小时后固定化水蚤50％（EC50）的标称有效浓度为0.53和0.36μgL〜（-1）0.70和0.44μgL〜（-1）和0.75和0.46μgL〜（-1）分别是菌株1、2和3。慢性研究证实，马拉松的生态毒性随接触时间的增加而增加。实际上，在暴露21天后，分别对菌株1、2和3的马拉硫磷浓度分别为22、220和230 ng L〜（-1）记录了对存活率的显着影响（最低观察到的效应浓度或LOEC）。还检查了其他终点，包括繁殖（具有不同参数），体长和胚胎毒性。针对这些不同的参数计算出IC10和IC20。对于三种测试菌株，ICs10的范围从4.7到大于220 ng L〜（-1）。最敏感的参数是每个成年人的新生儿数量（菌株1和2分别为ICs10 = 4.7和10.8 ng L〜（-1））或育雏数量（菌株3为IC10 = 10 ng L〜（-1）。 ）。此外，在两个最高测试马拉硫磷浓度下观察到胚胎发育异常的增加。异常包括活着的新生儿的第二触角未发育，弯曲或未伸展的壳棘以及腹部后弯曲。结果表明，马拉硫磷可能会在D. magna中充当内分泌干扰物，因为它会干扰发育。它还会导致这三种菌株的乙酰胆碱酯酶（AChE）活性大大降低。菌株2和3似乎都比菌株1（LOEC = 120 ng L〜（-1））更敏感（LOECs = 60 ng L〜（-1））。我们的结果表明，AChE活性反应也可用作菌株间（或克隆间）敏感性（即菌株（或克隆）特异性反应）的生物标志物。

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  • 来源
    《Journal of environmental science and health》 |2015年第3期|34-44|共11页
  • 作者

    HELA TOUMI; MONCEF BOUMAIZA; MAURICE MILLET; CLAUDEMIR M. RADETSKI; BABA I. CAMARA; VINCENT FELTEN; JEAN-FRANCOIS FERARD;

  • 作者单位

    Laboratoire de Bio-surveillance de l'Environnement (LBE), Unite d'Hydrobiologie littorale et limnique, Faculte des Sciences de Bizerte, Universite de Carthage, Bizerte, Tunisie,Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), UMR 7360 CNRS, Universite de Lorraine, Campus Bridoux, Bat. IBiSE, 8 rue du General Delestraint, 57070 Metz, France;

    Laboratoire de Bio-surveillance de l'Environnement (LBE), Unite d'Hydrobiologie littorale et limnique, Faculte des Sciences de Bizerte, Universite de Carthage, Bizerte, Tunisie;

    Institut de Chimie et Procedes pour l'Environnement, l'Energie et la Sante, UMR 7515 CNRS, Universite de Strasbourg, Strasbourg, France;

    Laboratorio de Remediacao Ambiental, Universidade do Vale do Itajai, Itajai, Brazil;

    Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), UMR 7360 CNRS, Universite de Lorraine, Campus Bridoux, Metz, France;

    Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), UMR 7360 CNRS, Universite de Lorraine, Campus Bridoux, Metz, France;

    Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), UMR 7360 CNRS, Universite de Lorraine, Campus Bridoux, Metz, France;

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  • 正文语种 eng
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  • 关键词

    Malathion; Daphnia magna; reproduction; endocrine disruption; acetylcholinesterase;

    机译：马拉硫磷水蚤再生产;内分泌干​​扰乙酰胆碱酯酶;

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