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首页> 外文期刊>Environmental toxicology and chemistry >Effect of sedimentary cadmium on the behavior of a burrowing mayfly (Ephemeroptera, Hexagenia limbata).
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Effect of sedimentary cadmium on the behavior of a burrowing mayfly (Ephemeroptera, Hexagenia limbata).

机译:沉积镉对穴居may的行为的影响(星opter,六边形)。

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摘要

Behavioral responses of aquatic invertebrates can serve as precocious indicators of adverse effects caused by metals. We conducted experiments to determine if the behavior of nymphs of the burrowing mayfly Hexagenia limbara (Ephemeroptera) was modified by the presence of cadmium (Cd) in sediments. We first exposed H. limbata to concentrations of sedimentary Cd found in lakes subject to smelter emissions (20 microg/g dry wt). We then compared the burrowing activity of control and Cd-contaminated nymphs by means of radiographs. We also studied the time allotted by nymphs to various activities (irrigation, walking, burrowing/feeding, cleaning, and turning) as determined from films taken using an infrared video camera. The results obtained suggest no significant difference in the burrowing activity of control versus Cd-contaminated individuals. Furthermore, the time spent in various behavioral activities was similar between control and Cd-contaminated nymphs. Given these results, we conclude that Cd has noeffect on the behavior of H. limbata for the range of Cd concentrations that we measured in nymphs.
机译:水生无脊椎动物的行为反应可以作为金属引起的不良反应的早熟指标。我们进行了实验,以确定沉积物中镉(Cd)的存在是否可改善挖洞may蝇若虫Hexagenia limbara(Ephemeroptera)的若虫行为。首先,我们使边缘链霉菌暴露于在受到冶炼厂排放(20微克/克干重)的湖泊中发现的沉积镉中。然后,我们通过射线照相比较了对照和Cd污染的若虫的穴居活动。我们还研究了若虫分配给各种活动(灌溉,散步,挖洞/进食,清洁和转身)的时间,这些时间是用红外摄像机拍摄的胶片确定的。所获得的结果表明,对照组和受Cd污染的个体的穴居活动没有显着差异。此外,对照和受Cd污染的若虫之间在各种行为活动中花费的时间相似。鉴于这些结果,我们得出结论,对于我们以若虫为单位测得的Cd浓度范围,Cd对隐缘线虫的行为没有影响。

著录项

  • 来源
    《Environmental toxicology and chemistry》 |2004年第2期|P.383-387|共5页
  • 作者

    Gosselin A; Hare L;

  • 作者单位

    Institut National de la Recherche Scientifique-Eau, Terre et Environnement, Universite du Quebec, C.P. 7500, Sainte-Foy, Quebec, G1V 4C7, Canada.;

  • 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 药学;
  • 关键词

    Cadmium; behavioral aspects; control; Effective; 镉;

    机译:镉;行为方面;控制;有效;镉;

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