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dc.contributor.authorBøhn, Thomas
dc.contributor.authorTraavik, Ingemar Terje
dc.contributor.authorPrimicerio, Raul
dc.date.accessioned2020-08-21T12:57:25Z
dc.date.available2020-08-21T12:57:25Z
dc.date.issued2009-10-27
dc.description.abstractThe food/feed quality of a variety of genetically modified (GM) maize expressing Cry1Ab Bt-toxin was tested over the life-cycle of <i>Daphnia magna</i>, an arthropod commonly used as model organism in ecotoxicological studies. Demographic responses were compared between animals fed GM or unmodified (UM) near isogenic maize, with and without the addition of predator smell. Age-specific data on survival and birth rates were integrated and analysed using life tables and Leslie matrices. Survival, fecundity and population growth rate (PGR) data generally disfavoured transgenic Bt-maize as feed for <i>D. magna</i> compared to animals fed the unmodified (UM) near isogenic line of maize. Decomposition of age-specific effects revealed that the most important contributions to a reduced PGR in the GM-fed group came from both fecundity and survival differences early in life. We conclude that juvenile and young adult stages are the most sensitive experimental units and should be prioritized in future research. These stages are often omitted in toxicological/ecotoxicological studies and in feeding trials.en_US
dc.identifier.citationBøhn, T., Traavik, T. & Primicerio, R. (2010). Demographic responses of <i>Daphnia magna</i> fed transgenic <i>Bt</i>-maize. <i>Ecotoxicology, 19</i>(2), 419-430.en_US
dc.identifier.cristinIDFRIDAID 338398
dc.identifier.doi10.1007/s10646-009-0427-x
dc.identifier.issn0963-9292
dc.identifier.issn1573-3017
dc.identifier.urihttps://hdl.handle.net/10037/19105
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.relation.journalEcotoxicology
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/MANGFOLD/154504/Norway/VANN: GMOs in aquatic ecosystems: pioneering ecological food-web model experiments//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2009 The Authorsen_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489en_US
dc.titleDemographic responses of Daphnia magna fed transgenic Bt-maizeen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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