Pubblicazione scientifica

Range-wide parallel climate-associated genomic clines in Atlantic salmon

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità
produzione e cattura

RIASSUNTO

Clinal variation across replicated environmental gradients can reveal evidence of local adaptation, providing insight into the demographic and evolutionary processes that shape intraspecific diversity. Using 1773 genome-wide single nucleotide polymorphisms we evaluated latitudinal variation in allele frequency for 134 populations of North American and European Atlantic salmon (Salmo salar). We detected 84 (4.74%) and 195 (11%) loci showing clinal patterns in North America and Europe, respectively, with 12 clinal loci in common between continents. Clinal single nucleotide polymorphisms were evenly distributed across the salmon genome and logistic regression revealed significant associations with latitude and seasonal temperatures, particularly average spring temperature in both continents. Loci displaying parallel clines were associated with several metabolic and immune functions, suggesting a potential basis for climate-associated adaptive differentiation. These climate-based clines collectively suggest evidence of large-scale environmental associated differences on either side of the North Atlantic. Our results support patterns of parallel evolution on both sides of the North Atlantic, with evidence of both similar and divergent underlying genetic architecture. The identification of climate-associated genomic clines illuminates the role of selection and demographic processes on intraspecific diversity in this species and provides a context in which to evaluate the impacts of climate change.

DATA

Data di pubblicazione: 15/11/2017

AUTORI

JEFFERY NICHOLAS W
STANLEY RYAN R E
WRINGE BRENDAN F
GUIJARRO-SABANIEL JAVIER
BOURRET VINCENT
BERNATCHEZ LOUIS
BENTZEN PAUL
BEIKO ROBERT G
GILBEY JOHN
CLEMENT MARIE
BRADBURY IAN R

ENTE DI AFFERENZA

Department of Biology Université Laval Québec Québec Canada G1 V 0A6
FISHERIES & OCEANS CANADA NORTHWEST ATLANTIC FISHERIES CTR ST JOHNS NEWFOUNDLAND & LABRADOR CANADA A1C 5X1
FACULTY OF COMPUTER SCIENCE DALHOUSIE UNIV HALIFAX NOVA SCOTIA CANADA B3H 4R2
FISHERIES & OCEANS CANADA BEDFORD INST OCEANOGRAPHY DARTMOUTH NOVA SCOTIA CANADA B2Y 4A2
LAB D EXPERTISE BIOLEGALE MFFP QUEBEC QUEBEC CANADA G1P 3W8
DEPT BIOLOGY DALHOUSIE UNIV HALIFAX NOVA SCOTIA CANADA B3H 4R2
MARINE SCOTLAND FRESHWATER FISHERIES LAB FASKALLY PITLOCHRY PH16 5LB UK
CTR FISHERIES ECOSYSTEMS RSCH FISHERIES & MARINE INST
LABRADOR INST MEMORIAL UNIV NEWFOUNDLAND HAPPY VALLEY GOOSE BAY NL CANADA

RIVISTA

Royal Society Open Science, 4(11), 171394

IMPACT FACTOR

2,680

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