Descrizione del progetto
La base genetica che determina la tempistica della migrazione dei salmoni
Le migrazioni dei salmoni dell’Atlantico (Salmo salar) dal fiume in cui sono nati alle zone di alimentazione marine e viceversa sono un esempio emblematico dei movimenti stagionali di una specie. Il progetto SAL-MOVE, finanziato dall’UE, raccoglierà le serie di dati esistenti e applicherà un’analisi genomica all’avanguardia per stabilire gli effetti ambientali e le basi genetiche della tempistica della migrazione dei salmoni. I risultati saranno combinati con gli scenari climatici futuri in un quadro di modellazione eco-evolutiva per prevedere in che modo le popolazioni di salmoni dell’Atlantico saranno influenzate dai cambiamenti antropogenici attraverso i loro fenotipi e genotipi di migrazione. I risultati di SAL-MOVE informeranno direttamente le azioni di gestione volte a migliorare la sicurezza del salmone selvatico.
Obiettivo
As the global environment changes, species are increasingly suffering mismatches between their seasonally timed movements and the conditions that they encounter. The long-distance migrations of Atlantic salmon (Salmo salar) from their natal rivers to their marine feeding grounds and back again are a charismatic example of such seasonally timed movements. The timings of both the outward and return migrations are heritable, and vary substantially within and among populations, likely reflecting selection to enter the marine environment when survival conditions are optimal and return to the freshwater when breeding success is maximized. Importantly, salmon cannot observe the conditions at their destination and must rely on proximate cues, in particular photoperiod, to schedule their migration. Globally, salmon migrations have advanced over recent decades, suggesting that phenological mismatch could be a factor in ongoing Atlantic salmon declines.
How and whether a species can adjust its migratory timing to match new conditions depends on the underlying genetic architecture of this timing. SAL-MOVE will establish a global collaborative network of salmon researchers, collate existing datasets, and apply state-of-the-art genomic analysis to characterize the environmental correlates and genetic basis of Atlantic salmon migration timing throughout its range. This information will be combined with future climate scenarios in an eco-evolutionary modelling framework to predict how Atlantic salmon populations will be impacted by anthropogenic change via their migration phenotypes and genotypes. Results from SAL-MOVE will be used to directly guide management actions intended to increase the security of wild Atlantic salmon.
Campo scientifico
Parole chiave
Programma(i)
Argomento(i)
Meccanismo di finanziamento
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinatore
IV2 3JH INVERNESS
Regno Unito