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Age at maturity in Atlantic salmon: molecular and ecological dissection of an adaptive trait

Total Cost €


EC-Contrib. €






 MATURATION project word cloud

Explore the words cloud of the MATURATION project. It provides you a very rough idea of what is the project "MATURATION" about.

larger    ecological    unclear    revolve    trait    statistical    interactions    evolution    female    gene    age    species    sea    later    trade    opportunity    molecular    genetic    understand    dominance    40    paper    occurs    tool    unless    ultimately    candidate    resolves    spawn    life    effect    biological    always    evolutionary    hence    remarkably    quantitative    dependent    salmon    functions    reported    reproductive    classic    size    variation    model    linked    vs    genetics    exhibits    maturity    phenotypes    freshwater    align    relatively    cover    risk    male    off    mechanisms    locally    maturation    maturing    sex    returning    locus    questions    elucidate    tightly    quantifying    genotype    gxe    shaped    prior    ideal    individuals    allelic    survival    spend    explaining    histories    first    complicating    resolution    dying    investigations    phenotype    traits    biology    link    mechanistic    reproduction    nature    provides    time    validate    fitness    architecture    sexual    nexus    history    underlying    causes    conflict    combined    drivers    atlantic   

Project "MATURATION" data sheet

The following table provides information about the project.


Organization address
postcode: 14

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Finland [FI]
 Total cost 2˙500˙000 €
 EC max contribution 2˙500˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-ADG
 Funding Scheme ERC-ADG
 Starting year 2017
 Duration (year-month-day) from 2017-09-01   to  2022-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Life history is the nexus of biology, because various biological questions ultimately revolve around the causes and consequences of variation in reproduction and survival, i.e. fitness. Traditionally, a major tool in life-history research has been quantitative genetics because it provides an important statistical link between phenotype and genotype. However, the mechanisms by which evolution occurs may remain unclear unless such traditional approaches are combined with molecular investigations. Another complicating factor is that the fitness of male vs female life histories do not always align, and hence life history traits may be shaped by sexual conflict. This is why life-history approaches focusing on both quantifying the conflict and understanding its resolution at the genetic level are needed. As in many species, age at maturity in Atlantic salmon is tightly linked with size at maturity and thus represents a classic evolutionary trade-off: later maturing individuals spend more time at sea before returning to freshwater to spawn and have higher reproductive success due to their larger size but also have a higher risk of dying prior to first reproduction. Our recent cover paper in Nature reported a large-effect gene explaining 40% of the variation in this key life history trait. Remarkably, the locus exhibits sex-dependent dominance and this resolves a potential intra-locus sexual conflict in the species. The relatively simple genetic architecture of this trait combined with the features of Atlantic salmon as a model system offer an ideal opportunity to better understand the molecular mechanisms and ecological drivers underlying a locally adapted life history trait. In MATURATION I will i) characterize age at maturity candidate gene functions and allelic effects on phenotypes ii) elucidate fitness effects of these phenotypes and GxE interactions iii) develop a mechanistic model for the sex-dependent dominance and validate intra-locus sexual conflict resolution


year authors and title journal last update
List of publications.
2019 Kenyon B. Mobley, Hanna Granroth-Wilding, Mikko Ellmen, Juha-Pekka Vähä, Tutku Aykanat, Susan E. Johnston, Panu Orell, Jaakko Erkinaro, Craig R. Primmer
Home ground advantage: Local Atlantic salmon have higher reproductive fitness than dispersers in the wild
published pages: eaav1112, ISSN: 2375-2548, DOI: 10.1126/sciadv.aav1112
Science Advances 5/2 2019-10-08
2018 Yann Czorlich, Tutku Aykanat, Jaakko Erkinaro, Panu Orell, Craig Robert Primmer
Rapid sex-specific evolution of age at maturity is shaped by genetic architecture in Atlantic salmon
published pages: 1800-1807, ISSN: 2397-334X, DOI: 10.1038/s41559-018-0681-5
Nature Ecology & Evolution 2/11 2019-10-08

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