6533b82cfe1ef96bd1290040
RESEARCH PRODUCT
The asexual enchytraeid worm Cognettia sphagnetorum (Oligochaeta) has increased Cu resistance in polluted soil
Juha-pekka SalminenJari Haimisubject
0106 biological sciencesHealth Toxicology and Mutagenesismedia_common.quotation_subjectPopulation DynamicsDrug ResistanceAsexual reproduction010501 environmental sciencesToxicology010603 evolutionary biology01 natural sciencesAcclimatizationPopulation densityReproduction AsexualBotanyAnimalsSoil PollutantsOligochaeta0105 earth and related environmental sciencesmedia_commonFragmentation (reproduction)biologyGeneral MedicineEnchytraeidaebiology.organism_classificationAdaptation PhysiologicalSurvival AnalysisPollutionSoil contaminationOligochaetaBody ConstitutionReproductionCopperdescription
We studied Cu resistance in the asexual (reproduction through fragmentation) enchytraeid worms (Cognettia sphagnetorum, Oligochaeta) originating from two sites: one uncontaminated, and another contaminated by heavy metals. Adult worms were smaller and population density was lower at the polluted site. However, adults from the contaminated site had better survival in Cu-contaminated soil, but lower survival as juveniles (fragments). As we do not know the genetic basis of Cu resistance of the worms, it may have been reached by acclimatization via induced Cu regulation. Because fragmentation is the only mode of reproduction, all phenotypic properties (including resistance) of a parental generation could be transferred to filial generations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-06-01 | Environmental Pollution |