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dc.contributor.authorRanke, Peter Sjolte
dc.contributor.authorSkjelseth, Sigrun
dc.contributor.authorPärn, Henrik
dc.contributor.authorHerfindal, Ivar
dc.contributor.authorBorg Pedersen, Åsa Alexandra
dc.contributor.authorStokke, Bård Gunnar
dc.contributor.authorKvalnes, Thomas
dc.contributor.authorRingsby, Thor Harald
dc.contributor.authorSæther, Bernt-Erik
dc.contributor.authorJensen, Henrik
dc.date.accessioned2017-10-30T13:24:05Z
dc.date.available2017-10-30T13:24:05Z
dc.date.created2017-03-17T05:49:03Z
dc.date.issued2017
dc.identifier.citationOikos. 2017, 126 (10), 1410-1418.nb_NO
dc.identifier.issn0030-1299
dc.identifier.urihttp://hdl.handle.net/11250/2462911
dc.description.abstractTranslocation of individuals from source populations to augment small populations facing risk of extinction is an important conservation tool. Here we examine sex-specific differences between resident and translocated house sparrows Passer domesticus in reproductive success and survival, and the contribution of translocated individuals to the growth of a local population. We found evidence for assortative mating based on origin revealed by fewer parentages between translocated males and resident females than expected, and the total number of fledglings produced by such pairs was lower. The reproductive success of translocated males was positively related to the size of the throat badge (a sexual ornament), such that only translocated males with a large badge size were as successful as resident males. However, offspring with parents of different origin had higher survival than offspring with parents of the same origin, which suggests hybrid vigour. The contribution of resident and translocated individuals to the stochastic component of the long-run growth rate of the population was similar; neither the mean individual contributions in fitness nor the demographic variance differed between the two groups. Thus, this experiment shows that translocated individuals may have a similar demographic influence on the growth of local populations as resident individuals. Still, the intermixing of translocated and resident individuals was low, and fitness differed according to origin in relation to individual differences in a sexually selected trait. In addition, hybrid vigour with respect to offspring recruitment seemed to partially decrease the negative fitness consequences of the assortative mating based on origin.nb_NO
dc.language.isoengnb_NO
dc.publisherNordic Ecological Society for Oikos Editorial Officenb_NO
dc.titleDemographic influences of translocated individuals on a resident population of house sparrowsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber1410-1418nb_NO
dc.source.volume126nb_NO
dc.source.journalOikosnb_NO
dc.source.issue10nb_NO
dc.identifier.doi10.1111/oik.04065
dc.identifier.cristin1458935
dc.relation.projectEU/268562nb_NO
dc.relation.projectNorges forskningsråd: 223257nb_NO
dc.relation.projectNorges forskningsråd: 221956nb_NO
dc.description.localcodeThis is the peer reviewed version of the following article: [Demographic influences of translocated individuals on a resident population of house sparrows], which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/oik.04065/abstract. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Locked until 24.4.2018 due to copyright restrictions.nb_NO
cristin.unitcode194,66,10,0
cristin.unitnameInstitutt for biologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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