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首页> 外文期刊>Science of the total environment >Effects of deltamethrin (pyrethroid insecticide) on growth, reproduction, embryonic development and sex differentiation in two strains of Daphnia magna (Crustacea, Cladocera)
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Effects of deltamethrin (pyrethroid insecticide) on growth, reproduction, embryonic development and sex differentiation in two strains of Daphnia magna (Crustacea, Cladocera)

机译：溴氰菊酯（拟除虫菊酯类杀虫剂）对两种大型水蚤（甲壳纲，克拉多菌）的生长，繁殖，胚胎发育和性别分化的影响

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摘要

Acute and different chronic ecotoxic effects of deltamethrin have been investigated on two strains (coming from two different laboratories) of Daphnia magna. The effective concentrations immobilizing 50% of daphnids (EC_(50)S) after 24 h and 48 h were 9.40 and 0.32 μg L~(-1) 8.86 and 0.63 μg L~(-1) for first strain (strain 1) and second strain (strain 2), respectively. Thus, there was an increase of deltamethrin ecotoxicity with time of exposure as confirmed by chronic studies. After 21 days of exposure to deltamethrin, daphnids have showed significant effects on survival at deltamethrin concentrations of 0.16 μg L~(-1) and 0.31 μg L~(-1) for strains 1 and 2, respectively. Eleven other endpoints were examined: body length, population growth rate and various reproductive parameters (days to first brood, number of broods, number of cumulative molts and number of neonates), embryotoxicity and appearance of males. IC_(10) values related to the number of juveniles per live adult were 11 and 46 ng L~(-1) for strains 1 and 2, respectively. Furthermore, an increase in embryo deformities was observed at the highest concentrations tested for both strains. Following deltamethrin exposure, undeveloped second antennae, curved or unextended shell spines, and curved post abdomen spines were observed in live neonates. The production of male juveniles was only registered with strain 1 at 0.16 μg L~(-1) Results suggest that deltamethrin could act as an endocrine disruptor in D. magna as it interferes with sex determination and development abnormality but there is a difference in sensitivity between the two tested strains.
机译：研究了溴氰菊酯对大型蚤（Daphnia magna）的两种菌株（来自两个不同实验室）的急性和不同的慢性生态毒性作用。第一个菌株（菌株1）和24小时后，固定50％的蚤类（EC_（50）S）的有效浓度分别为9.40和0.32μgL〜（-1）8.86和0.63μgL〜（-1）。第二应变（应变2）。因此，慢性研究证实溴氰菊酯的生态毒性随接触时间的增加而增加。在溴氰菊酯中暴露21天后，对于菌株1和2，蚤形虫在溴氰菊酯浓度分别为0.16μgL〜（-1）和0.31μgL〜（-1）时已显示出对存活率的显着影响。还检查了其他11个终点：体长，种群生长速度和各种生殖参数（到第一个育雏的天数，育雏数量，累积蜕皮数量和新生儿数量），胚胎毒性和雄性外观。与菌株1和2相比，与每个活成年人的幼体数目有关的IC_（10）值分别为11和46 ng L〜（-1）。此外，在两种菌株测试的最高浓度下都观察到胚胎畸形的增加。溴氰菊酯暴露后，在活新生儿中观察到未发育的第二触角，弯曲或未延伸的壳棘以及弯曲的腹部后棘。雄性少年的生产仅在菌株1中以0.16μgL〜（-1）记录。结果表明溴氰菊酯可能会在D. magna中充当内分泌干扰物，因为它会干扰性别确定和发育异常，但敏感性存在差异在两个测试菌株之间。

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  • 来源
    《Science of the total environment》 |2013年第1期|47-53|共7页
  • 作者

    H.Toumi; M. Boumaiza; M. Millet; CM. Radetski; V. Felten; C. Fouque; J.F. Ferard;

  • 作者单位

    Laboratolre de Bio-surveillance de l'Environnement, Unite d'Hydrobiologie littorale et limnique, Universite de Carthage, Faculte des Sciences de Bizerte, 7021 Zarzouna, Bizerte, Tunisie,ICPEES (UMR 7515 CNRS-Universite de Strasbourg), 1 rue Blessig, 67084 Strasbourg Cedex, France;

    Laboratolre de Bio-surveillance de l'Environnement, Unite d'Hydrobiologie littorale et limnique, Universite de Carthage, Faculte des Sciences de Bizerte, 7021 Zarzouna, Bizerte, Tunisie;

    ICPEES (UMR 7515 CNRS-Universite de Strasbourg), 1 rue Blessig, 67084 Strasbourg Cedex, France;

    Laboratorio de Remediacao Ambiental, Universidade do Vale do Itajai, Rua Uruguai, 458, Itajai, SC, 88302-202, Brazil;

    Universite de Lorraine, Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360 CNRS, Rue du General Delestraint, Metz, F-57070, France;

    Universite de Lorraine, Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360 CNRS, Rue du General Delestraint, Metz, F-57070, France;

    Universite de Lorraine, Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360 CNRS, Rue du General Delestraint, Metz, F-57070, France;

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  • 正文语种 eng
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  • 关键词

    Deltamethrin; Daphnia magna; Reproduction; Embryotoxicity; Sex ratio;

    机译：溴氰菊酯;水蚤再生产;胚胎毒性性别比例;

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