Emilio Egal @emilioegal.bsky.social · 04/06/2026Sex and life-history further modulated RS: male immigrants underperformed local males, whereas multi-sea-winter females often equalled or outperformed local females. Immigrant males partially compensated their lower RS by acquiring more mates. 4/4 000 0
Emilio Egal @emilioegal.bsky.social · 04/06/2026However, outcomes were strongly origin-dependent: immigrants from some populations suffered severe fitness costs while others matched or exceeded locals. 3/4 100 1
Emilio Egal @emilioegal.bsky.social · 04/06/2026Immigrants represented 19.5% of adults, showed male-biased dispersal and averaged 15% lower Reproductive Success than locals. 2/4 100 1
Emilio Egal @emilioegal.bsky.social · 04/06/202615 years. 1,100 adults. 3,400 juveniles. One question: do immigrants pay a fitness cost in the wild?🐟 Yes, but only sometimes. The cost of dispersal in Atlantic salmon depends on the origin, sex and age. Out now doi.org/10.1098/rspb... in ProcB @royalsocietypublishing.org 1/4royalsocietypublishing.orgSelection against dispersers: sex, age and origin-dependent fitness differences in wild Atlantic salmonAbstract. Local adaptation is often portrayed as uniform fitness disadvantages of immigrants relative to locals. Yet dispersal costs vary with origin, sex 1103 10
Reposted by Emilio EgalCharles Perrier @charles-perrier.bsky.social · 03/06/2026Emilio Egal’s first PhD paper on the effects of dispersal on fitness in wild Atlantic salmon, using a 15-year genetic pedigree comprising more than 1,100 adults and 3,400 juveniles! @inrae-france.bsky.social @inrae-ecobiop.bsky.social @cbgpmontpellier.bsky.social @ofbiodiversite.bsky.socialroyalsocietypublishing.orgSelection against dispersers: sex, age and origin-dependent fitness differences in wild Atlantic salmonAbstract. Local adaptation is often portrayed as uniform fitness disadvantages of immigrants relative to locals. Yet dispersal costs vary with origin, sex 2126 12
Emilio Egal @emilioegal.bsky.social · 27/08/2025I had the pleasure of presenting my research on "Reproductive success of immigrants depends on the population of origin in Atlantic salmon" at the ESEB Congress 2025 in Barcelona @eseb2025.bsky.social @eseb.bsky.social Thanks to the organizers and to all participants ! #ESEB2025 050 5
Emilio Egal @emilioegal.bsky.social · 18/08/2025I had the pleasure of presenting my research on "Fitness of immigrants depends on the population of origin in Atlantic salmon (Salmo salar)" at the Ecology & Behaviour 2025 conference held at the CEFE, Montpellier. Thanks to the organizers and to all participants ! @ecobhvr2025.bsky.social @cnrs.fr 000 0
