Linking lysosomal biomarker and population responses in a field population of Aporrectodea caliginosa (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.accessioned2011-05-15T16:01:36Z
dc.date.available2011-05-15T16:01:36Z
dc.date.issued2003
dc.description.abstractThe effects of the fungicide copper oxychloride on a field population of the earthworm Aporrectodea caliginosa were investigated. Changes were monitored in earthworm numbers and biomass, copper concentrations in soil and earthworms, and neutral red retention times (NRRTs) of coelomocytes. The aim was to establish whether the cellular responses could be linked to changes at the population level. Results indicated that there was a significant (P<0.05) impact on worm density and biomass on the treated plots 6 months after spraying with the fungicide stopped. NRRTs of treated earthworms were significantly lower after one spraying when earthworms had elevated concentrations of copper in their body tissues. Six months after spraying stopped, copper levels in both soil and earthworm tissues declined significantly, but the earthworm numbers and biomass were still significantly lower in the treated plots. This indicated that the effects of the copper oxychloride exposure manifested at a much later stage at the population level, than on NRRT. We conclude that the decrease in NRRTs, which preceded the decrease in both earthworm biomass and numbers, may have predictive value as a biomarker of impending population changes. © 2003 Elsevier Science (USA). All rights reserved.
dc.description.versionArticle
dc.identifier.citationEcotoxicology and Environmental Safety
dc.identifier.citation56
dc.identifier.citation3
dc.identifier.issn1476513
dc.identifier.other10.1016/S0147-6513(02)00087-8
dc.identifier.urihttp://hdl.handle.net/10019.1/12060
dc.subjectbiological marker
dc.subjectcopper derivative
dc.subjectcopper oxychloride
dc.subjectfungicide
dc.subjectneutral red
dc.subjectunclassified drug
dc.subjectbiomarker
dc.subjectearthworm
dc.subjectecotoxicology
dc.subjectfungicide
dc.subjectpollution exposure
dc.subjectpopulation ecology
dc.subjectanimal experiment
dc.subjectannelid worm
dc.subjectarticle
dc.subjectbiomass
dc.subjectconcentration (parameters)
dc.subjectcontrolled study
dc.subjectearthworm
dc.subjectlysosome
dc.subjectnonhuman
dc.subjectprediction
dc.subjectsoil
dc.subjectAnimals
dc.subjectBiological Markers
dc.subjectBiomass
dc.subjectCopper
dc.subjectEnvironmental Exposure
dc.subjectFungicides, Industrial
dc.subjectIndicators and Reagents
dc.subjectNeutral Red
dc.subjectOligochaeta
dc.subjectSoil Pollutants
dc.subjectAporrectodea
dc.subjectPheretima sieboldi
dc.titleLinking lysosomal biomarker and population responses in a field population of Aporrectodea caliginosa (Oligochaeta) exposed to the fungicide copper oxychloride
dc.typeArticle
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