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MATURATION SIGNED

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

Total Cost €

0

EC-Contrib. €

0

Partnership

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 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.

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

Project "MATURATION" data sheet

The following table provides information about the project.

Coordinator
HELSINGIN YLIOPISTO 

Organization address
address: YLIOPISTONKATU 3
city: HELSINGIN YLIOPISTO
postcode: 14
website: www.helsinki.fi

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

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    HELSINGIN YLIOPISTO FI (HELSINGIN YLIOPISTO) coordinator 2˙500˙000.00

Map

 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

 Publications

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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