Polygenic and major-locus contributions to sexual maturation timing in Atlantic salmon

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dc.contributor.author Debes, Paul
dc.contributor.author Piavchenko, Nikolai
dc.contributor.author Ruokolainen, Annukka
dc.contributor.author Ovaskainen, Outi
dc.contributor.author Moustakas-Verho, Jacqueline E.
dc.contributor.author Parre, Noora
dc.contributor.author Aykanat, Tutku
dc.contributor.author Erkinaro, Jaakko
dc.contributor.author Primmer, Craig R.
dc.date.accessioned 2021-09-16T11:59:03Z
dc.date.available 2021-09-16T11:59:03Z
dc.date.issued 2021-09
dc.identifier.citation Debes , P , Piavchenko , N , Ruokolainen , A , Ovaskainen , O , Moustakas-Verho , J E , Parre , N , Aykanat , T , Erkinaro , J & Primmer , C R 2021 , ' Polygenic and major-locus contributions to sexual maturation timing in Atlantic salmon ' , Molecular Ecology , vol. 30 , no. 18 , pp. 4505-4519 . https://doi.org/10.1111/mec.16062
dc.identifier.other PURE: 167651915
dc.identifier.other PURE UUID: 951d55bc-eb51-45f3-a8ce-1de140de5d5b
dc.identifier.other WOS: 000675260200001
dc.identifier.other ORCID: /0000-0001-9702-0945/work/100082278
dc.identifier.other ORCID: /0000-0002-3687-8435/work/100085111
dc.identifier.uri http://hdl.handle.net/10138/334420
dc.description.abstract Sexual maturation timing is a life-history trait central to the balance between mortality and reproduction. Maturation may be triggered when an underlying compound trait, called liability, exceeds a threshold. In many different species and especially fishes, this liability is approximated by growth and body condition. However, environmental vs. genetic contributions either directly or via growth and body condition to maturation timing remain unclear. Uncertainty exists also because the maturation process can reverse this causality and itself affect growth and body condition. In addition, disentangling the contributions of polygenic and major loci can be important. In many fishes, males mature before females, enabling the study of associations between male maturation and maturation-unbiased female liability traits. Using 40 Atlantic salmon families, longitudinal common-garden experimentation, and quantitative genetic analyses, we disentangled environmental from polygenic and major locus (vgll3) effects on male maturation, and sex-specific growth and condition. We detected polygenic heritabilities for maturation, growth, and body condition, and vgll3 effects on maturation and body condition but not on growth. Longitudinal patterns for sex-specific phenotypic liability, and for genetic variances and correlations between sexes suggested that early growth and condition indeed positively affected maturation initiation. However, towards spawning time, causality appeared reversed for males whereby maturation affected growth negatively and condition positively via both the environmental and genetic effects. Altogether, the results indicate that growth and condition are useful traits to study liability for maturation initiation, but only until maturation alters their expression, and that vgll3 contributes to maturation initiation via condition. en
dc.format.extent 15
dc.language.iso eng
dc.relation.ispartof Molecular Ecology
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject feed restriction
dc.subject genetic correlation
dc.subject large effect locus
dc.subject life-history trait
dc.subject sexual maturation
dc.subject LIFE-HISTORY VARIATION
dc.subject DEPENDENT DOMINANCE
dc.subject GENERAL-METHODS
dc.subject REACTION NORMS
dc.subject SALAR
dc.subject GROWTH
dc.subject SELECTION
dc.subject MATURITY
dc.subject EVOLUTION
dc.subject MODELS
dc.subject 1181 Ecology, evolutionary biology
dc.subject 1182 Biochemistry, cell and molecular biology
dc.title Polygenic and major-locus contributions to sexual maturation timing in Atlantic salmon en
dc.type Article
dc.contributor.organization Evolution, Conservation, and Genomics
dc.contributor.organization Organismal and Evolutionary Biology Research Programme
dc.contributor.organization Zoology
dc.contributor.organization Biosciences
dc.contributor.organization Genetics
dc.contributor.organization Institute of Biotechnology
dc.contributor.organization Helsinki Institute of Sustainability Science (HELSUS)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1111/mec.16062
dc.relation.issn 0962-1083
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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