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http://krishi.icar.gov.in/jspui/handle/123456789/63151| Title: | Differential responses of sexual and asexual Artemia to genotoxicity by a reference mutagen:Is the comet assay a reliable predictor of population level responses? |
| Other Titles: | Not Available |
| Authors: | Sukumaran,Sandhya Grant,Alastair |
| ICAR Data Use Licennce: | Not Available |
| Author's Affiliated institute: | Not Available |
| Published/ Complete Date: | 2013 |
| Project Code: | Not Available |
| Keywords: | Artemia franciscana Artemia parthenogenetica Ethyl methanesulfonate Genotoxicity Comet assay Fitness effects |
| Citation: | Not Available |
| Series/Report no.: | Not Available |
| Abstract/Description: | The impactofchronicgenotoxicitytonaturalpopulationsisalwaysquestionedduetotheir reproductivesurplus.WeusedacometassaytoquantifyprimaryDNAdamageafterexposuretoa referencemutagenethylmethanesulfonateintwospeciesofcrustaceanwithdifferentreproductive strategies(sexual Artemia franciscana and asexual Artemia parthenogenetica). Wethenassessedwhether this predictedindividualperformanceandpopulationgrowthrateoverthreegenerations. Artemia were exposedtodifferentchronicconcentrations(0.78mM,1.01mM,1.24mMand1.48mM)ofethyl methanesulfonatefrominstar1onwardsfor3h,24h,7days,14daysand21daysandpercentagetail DNA valueswereusedforcomparisonsbetweenspecies.ThepercentagetailDNAvaluesshowed consistentlyelevatedvaluesupto7daysandshowedareductionfrom14daysonwardsin A. franciscana. Whilstin A. parthenogenetica such areductionwasevidenton21daysassessment.The values ofpercentagetailDNAafter21dayswerecomparedwithpopulationlevelfitnessparameters, growth,survival,fecundityandpopulationgrowthratetoknowwhetherprimaryDNAdamageas measuredbycometassayisareliablebiomarker.SubstantialincreaseintailDNAvalueswasassociated with substantialreductionsinallthefitnessparametersintheparentalgenerationof A. franciscana and parental,F1andF2generationsof A. parthenogenetica. Socometresultsweremorepredictiveinasexual speciesovergenerations.Theseresultspointedtotheimportanceofpredictingbiomarkerresponses from multigenerationalconsequencesconsideringlifehistorytraitsandreproductivestrategiesin ecologicalriskassessments. |
| Description: | Not Available |
| ISSN: | Not Available |
| Type(s) of content: | Article |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Ecotoxicology and EnvironmentalSafety |
| Volume No.: | 91 |
| Page Number: | 110-116 |
| Name of the Division/Regional Station: | Not Available |
| Source, DOI or any other URL: | http://eprints.cmfri.org.in/9638/1/ecotoxicology_and_environmental_safety_paper.pdf |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/63151 |
| Appears in Collections: | FS-CMFRI-Publication |
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