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Home ground advantage: Local Atlantic salmon have higher reproductive fitness than dispersers in the wild
- Source :
- Science Advances, Mobley, K B, Granroth-Wilding, H, Ellmen, M, Vähä, J P, Aykanat, T, Johnston, S E, Orell, P, Erkinaro, J & Primmer, C R 2019, ' Home ground advantage : Local Atlantic salmon have higher reproductive fitness than dispersers in the wild ', Science Advances, vol. 5, no. 2, eaav1112 . https://doi.org/10.1126/sciadv.aav1112
- Publication Year :
- 2019
-
Abstract
- Salmon spawning in their local habitat have a clear reproductive advantage over dispersers from nearby populations.<br />A long-held, but poorly tested, assumption in natural populations is that individuals that disperse into new areas for reproduction are at a disadvantage compared to individuals that reproduce in their natal habitat, underpinning the eco-evolutionary processes of local adaptation and ecological speciation. Here, we capitalize on fine-scale population structure and natural dispersal events to compare the reproductive success of local and dispersing individuals captured on the same spawning ground in four consecutive parent-offspring cohorts of wild Atlantic salmon (Salmo salar). Parentage analysis conducted on adults and juvenile fish showed that local females and males had 9.6 and 2.9 times higher reproductive success than dispersers, respectively. Our results reveal how higher reproductive success in local spawners compared to dispersers may act in natural populations to drive population divergence and promote local adaptation over microgeographic spatial scales without clear morphological differences between populations.
- Subjects :
- SELECTION
0106 biological sciences
Male
PACIFIC
MIGRATION
Population
Salmo salar
Zoology
IMMIGRANTS
010603 evolutionary biology
01 natural sciences
Ecological speciation
GENE FLOW
SALAR
Animals
14. Life underwater
Salmo
ADAPTATION
education
Research Articles
Ecosystem
Local adaptation
education.field_of_study
CONSEQUENCES
Multidisciplinary
biology
Reproductive success
Ecology
Geography
ta1184
010604 marine biology & hydrobiology
Reproduction
SciAdv r-articles
Juvenile fish
Models, Theoretical
biology.organism_classification
Biological Evolution
EVOLUTION
DIFFERENTIATION
1181 Ecology, evolutionary biology
ta1181
Biological dispersal
Female
Genetic Fitness
Adaptation
Research Article
Subjects
Details
- ISSN :
- 23752548
- Database :
- OpenAIRE
- Journal :
- Science Advances
- Accession number :
- edsair.doi.dedup.....76e90a040a33b63ecbc14f0ba0b0728a
- Full Text :
- https://doi.org/10.1126/sciadv.aav1112