Näytä suppeat kuvailutiedot

dc.contributor.authorSchroderus, Eero
dc.contributor.authorKoivula, Minna
dc.contributor.authorKoskela, Esa
dc.contributor.authorMappes, Tapio
dc.contributor.authorOksanen, Tuula
dc.contributor.authorPoikonen, Tanja
dc.date.accessioned2012-08-20T08:02:38Z
dc.date.available2012-08-20T08:02:38Z
dc.date.issued2012
dc.identifier.citationSchroderus, E., Koivula, M., Koskela, E., Mappes, T., Oksanen, T., & Poikonen, T. (2012). Can number and size of offspring increase simultaneously? – A central life-history trade-off reconsidered. BMC Evolutionary Biology, 12 (44). doi:10.1186/1471-2148-12-44 Retrieved from http://www.biomedcentral.com/1471-2148/12/44
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/38308
dc.description.abstractBackground: To maximize their fitness, parents are assumed to allocate their resources optimally between number and size of offspring. Although this fundamental life-history trade-off has been subject to long standing interest, its genetic basis, especially in wild mammals, still remains unresolved. One important reason for this problem is that a large multigenerational pedigree is required to conduct a reliable analysis of this trade-off. Results: We used the REML-animal model to estimate genetic parameters for litter size and individual birth size for a common Palearctic small mammal, the bank vole (Myodes glareolus). Even though a phenotypic trade-off between offspring number and size was evident, it was not explained by a genetic trade-off, but rather by negative correlations in permanent and temporary environmental effects. In fact, even positive genetic correlations were estimated between direct genetic effects for offspring number and size indicating that genetic variation in these two traits is not necessarily antagonistic in mammals. Conclusions: Our results have notable implications for the study of the life-history trade-off between offspring number and size in mammals. The estimated genetic correlations suggest that evolution of offspring number and size in polytocous mammals is not constrained by the trade-off caused by antagonistic selection responses per se, but rather by the opposing correlative selection responses in direct and maternal genetic effects for birth size.fi
dc.language.isoeng
dc.publisherBioMed Central (BMC)
dc.relation.ispartofseriesBMC Evolutionary Biology
dc.relation.urihttp://www.biomedcentral.com/1471-2148/12/44
dc.subject.otherlitter sizeen
dc.subject.otherbirth sizeen
dc.subject.othergenetic correlationen
dc.subject.otherheritabilityen
dc.subject.othermyodes glareolusfi
dc.subject.otherpoikueetfi
dc.subject.othersyntymäkokofi
dc.subject.othergeneettinen korrelaatiofi
dc.subject.otherheritabiliteettifi
dc.titleCan number and size of offspring increase simultaneously? – A central life-history trade-off reconsidered
dc.typeArticle
dc.identifier.urnURN:NBN:fi:jyu-201208202179
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosThe Department of Biological and Environmental Scienceen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.identifier.doidoi:10.1186/1471-2148-12-44
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn1471-2148
dc.type.versionpublishedVersion
dc.rights.copyright© 2012 Schroderus et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by/2.0


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Näytä suppeat kuvailutiedot

© 2012 Schroderus et al; licensee BioMed Central Ltd. 


This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Ellei muuten mainita, aineiston lisenssi on © 2012 Schroderus et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.