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首页> 外文期刊>Environmental toxicology and chemistry >Feeding Inhibition in the Soil Collembolan Folsomia Candida as an Endpoint for the Estimation of Organic Waste Ecotoxicity
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Feeding Inhibition in the Soil Collembolan Folsomia Candida as an Endpoint for the Estimation of Organic Waste Ecotoxicity

机译：Collembolan Folsomia Candida土壤中的进食抑制作为估算有机废物生态毒性的终点

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摘要

Despite the increasing quantities of organic wastes that are being reused in soils, there are few studies that focus on the selection of bioassays for the ecotoxicological risk assessment of organic wastes to soils. In the present study, differences in feeding inhibition in the soil collembolan Folsomia Candida were evaluated as an ecotoxicological endpoint for the assessment of risk to soils amended with polluted organic wastes. Seven organic wastes (dewatered sewage sludges, thermally dried sewage sludges, composted sewage sludges, and a thermally dried pig slurry) were tested. These wastes had different origins, treatments, and pollutant burdens, and were selected as a representative sample of the wide variety of wastes currently generated. A clear dose response was observed for this parameter, with an increase in percentage of individual feeding inhibition with increased doses of organic wastes. More significantly, feeding inhibition correlated highly with mortality and reproduction inhibition in the different wastes. Composted sludges displayed the lowest toxicity, followed by thermally dried sludge and dewatered sludge. Thermally dried pig slurry showed the highest toxicity for feeding, with lower median effective concentration (EC50) values than the lowest dose tested. Among waste physicochemical parameters and pollutants, low organic matter stability appeared to be the main predictor of potential adverse effects on soil fauna, because it correlated significantly with feeding inhibition and mortality. Furthermore, feeding inhibition tests were run over a short exposure time (less than 7 d), which, together with the results obtained, makes this bioassay a good screening tool for organic waste toxicity.
机译：尽管有机废物在土壤中可再利用的数量不断增加，但很少有研究侧重于选​​择生物测定法对土壤中有机废物进行生态毒理风险评估的研究。在本研究中，土壤Collembolan Folsomia Candida中进食抑制的差异被评估为生态毒理学终点，用于评估受污染有机废物修正的土壤的风险。测试了七种有机废物（脱水的污水污泥，热干燥的污水污泥，堆肥的污水污泥和热干燥的猪粪）。这些废物有不同的来源，处理方法和污染物负担，因此被选为目前产生的各种废物的代表性样本。对于该参数，观察到明确的剂量响应，随着有机废物剂量的增加，个体进食抑制的百分比增加。更重要的是，进食抑制与不同废物中的死亡率和繁殖抑制高度相关。堆肥污泥的毒性最低，其次是热干燥污泥和脱水污泥。热干燥的猪粪显示出最高的饲喂毒性，其中值有效浓度（EC50）值低于最低的测试剂量。在废物的理化参数和污染物中，低有机物稳定性似乎是对土壤动物潜在不利影响的主要预测因子，因为它与摄食抑制和死亡率显着相关。此外，进食抑制测试是在较短的暴露时间（少于7天）内进行的，与获得的结果一起，使该生物测定成为有机废物毒性的良好筛选工具。

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  • 来源
    《Environmental toxicology and chemistry》 |2007年第7期|1538-1544|共7页
  • 作者

    Xavier Domene; Tiago Natal-da-Luz; Josep M. Alcaniz; Pilar Andres; Jose Paulo Sousa;

  • 作者单位

    Center for Ecological Research and Forestry Applications (CREAF), Department of Plant Biology, Animal Biology, and Ecology, Autonomous University of Barcelona, 08193 Bellaterra, Barcelona, Spain;

    Instituto do Ambiente e Vida (IAV), Department of Zoology, University of Coimbra, Largo Marques de Pombal, 3004-517 Coimbra, Portugal;

    Center for Ecological Research and Forestry Applications (CREAF), Department of Plant Biology, Animal Biology, and Ecology, Autonomous University of Barcelona, 08193 Bellaterra, Barcelona, Spain;

    Center for Ecological Research and Forestry Applications (CREAF), Department of Plant Biology, Animal Biology, and Ecology, Autonomous University of Barcelona, 08193 Bellaterra, Barcelona, Spain;

    Instituto do Ambiente e Vida (IAV), Department of Zoology, University of Coimbra, Largo Marques de Pombal, 3004-517 Coimbra, Portugal;

  • 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

    folsomia candida; feeding inhibition; reproduction; survival; ecotoxicity;

    机译：念珠菌进食抑制再生产;生存生态毒性;

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