The relation between lysosomal biomarker and population responses in a field population of Microchaetus sp. (Oligochaeta) exposed to the fungicide copper oxychloride

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dc.contributor.authorMaboeta M.S.
dc.contributor.authorReinecke S.A.
dc.contributor.authorReinecke A.J.
dc.date.accessioned2011-05-15T16:01:37Z
dc.date.available2011-05-15T16:01:37Z
dc.date.issued2002
dc.description.abstractThe ecological relevance of the neutral red retention assay as a biomarker in an indigenous earthworm population (Microchaetus sp.) exposed to the fungicide copper oxychloride was investigated. Changes in earthworm biomass and numbers were monitored and related to changes in neutral red retention times of coelomocytes as well as changes in copper concentrations in the soil and earthworm body tissues. Results indicated that Microchaetus sp. responded sensitively to the copper oxychloride by showing an initial decrease in biomass 2 months after spraying started. This was followed by a significant decrease in worm numbers after 3 months. The neutral red retention times of earthworm coelomocytes decreased significantly within the first month of treatment and correspond to a significant increase in soil copper concentrations, but not with an immediate increase in body burdens of copper. More than a year after spraying had stopped the worm biomass and numbers were still significantly lower in the treated plots compared with the control plots. Since the reduction in neutral red retention times could he attributed to the presence of copper oxychloride and preceded the decline in population density and biomass, we conclude that this biomarker has a useful role to play in environmental risk assessment and could provide a warning of impending ecological damage. © 2002 Elsevier Science (USA).
dc.description.versionArticle
dc.identifier.citationEcotoxicology and Environmental Safety
dc.identifier.citation52
dc.identifier.citation3
dc.identifier.issn1476513
dc.identifier.other10.1006/eesa.2002.2180
dc.identifier.urihttp://hdl.handle.net/10019.1/12064
dc.subjectbiological marker
dc.subjectcopper
dc.subjectcopper oxychloride
dc.subjectfungicide
dc.subjectneutral red
dc.subjectunclassified drug
dc.subjectcoloring agent
dc.subjectbiomarker
dc.subjectcopper
dc.subjectearthworm
dc.subjectrisk assessment
dc.subjectanimal cell
dc.subjectanimal tissue
dc.subjectannelid worm
dc.subjectarticle
dc.subjectbioaccumulation
dc.subjectbioassay
dc.subjectbiomass
dc.subjectbody burden
dc.subjectcontrolled study
dc.subjectecotoxicity
dc.subjectenvironmental exposure
dc.subjectenvironmental monitoring
dc.subjectfield experiment
dc.subjectlysosome
dc.subjectlysosome membrane
dc.subjectnonhuman
dc.subjectpesticide spraying
dc.subjectpopulation density
dc.subjectpopulation exposure
dc.subjectrisk assessment
dc.subjectsoil analysis
dc.subjectanimal
dc.subjectforecasting
dc.subjectphysiology
dc.subjectpopulation dynamics
dc.subjectsensitivity and specificity
dc.subjectAnimal
dc.subjectBiological Markers
dc.subjectBiomass
dc.subjectCopper
dc.subjectDyes
dc.subjectEnvironmental Exposure
dc.subjectForecasting
dc.subjectNeutral Red
dc.subjectOligochaeta
dc.subjectPopulation Dynamics
dc.subjectRisk Assessment
dc.subjectSensitivity and Specificity
dc.subjectAnimals
dc.subjectColoring Agents
dc.subjectMicrochaetus
dc.subjectPheretima sieboldi
dc.titleThe relation between lysosomal biomarker and population responses in a field population of Microchaetus sp. (Oligochaeta) exposed to the fungicide copper oxychloride
dc.typeArticle
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