Adaptive phenotypic plasticity in Atlantic salmon and Atlantic cod and its relevance to risk assessments of aquaculture ...

• Main Authors: Hutchings, Jeffrey A., Fraser, Dylan J.
• Format: Conference Object
• Language: unknown
• Published: ASC 2009 - Theme session Q 2024
• Subjects: Fisheries and aquaculture; atlantic cod; Atlantic salmon; Gadus morhua; Salmo salar
• Online Access: https://dx.doi.org/10.17895/ices.pub.25074452.v1; https://ices-library.figshare.com/articles/conference_contribution/Adaptive_phenotypic_plasticity_in_Atlantic_salmon_and_Atlantic_cod_and_its_relevance_to_risk_assessments_of_aquaculture/25074452/1

No abstracts are to be cited without prior reference to the author.Risks to wild populations resulting from interbreeding with farmed escapees depend primarily on the probability of spawning between groups, the level of genetic differentiation between farmed and wild individuals, and the abundance of wild populations relative to conservation targets. The present work pertains to the second of these factors. In addition to the divergence that breeding designs and domestication selection can generate, genetic dissimilarities will also depend on the magnitude and type of genetic differentiation that exists among populations in the wild. Here, using common-garden experimental protocols, we describe experiments on Atlantic salmon (Salmo salar) and Atlantic cod (Gadus morhua) that have documented genetic differences phenotypic plasticity. Multi-generational crosses between farmed and wild salmon have revealed (i) adaptive variability in plasticity among populations and (ii) negative fitness consequences to wild ...