Theme Session on Monkfish across the world: common problems and common solutions (K) ...

• Main Authors: Horreo, Jose L., Machado-Schiaffino, Gonzalo, Griffiths, Andrew, Bright, Dylan, Stevens, Jamie, Garcia-Vazquez, Eva
• Format: Conference Object
• Language: unknown
• Published: ASC 2007 - Theme session K 2024
• Subjects: Fisheries and aquaculture; Technologies and data; Atlantic salmon; Salmo salar
• Online Access: https://dx.doi.org/10.17895/ices.pub.25258138; https://ices-library.figshare.com/articles/conference_contribution/Theme_Session_on_Monkfish_across_the_world_common_problems_and_common_solutions_K_/25258138

No abstracts are to be cited without prior reference to the author.Conservation of genetic variability is of priority for hatchery stocks employed to supplement natural populations. Supportive breeding of Atlantic salmon (Salmo salar) to enhance wild populations is particularly important at the south of the European distribution (northern Spain). In this region, wild adults are caught every year from local rivers and artificially crossed. The offspring are hatchery reared until juvenile stage, then released in the same river where their parents were caught. In this study we demonstrated that adult breeders chosen for creating hatchery stocks by artificial spawning preserved all genetic variants present in three wild Spanish populations for twelve microsatellite loci (Narcea, Cares and Sella rivers). However, significant losses of genetic variability were found in juveniles released to the native rivers. The cross strategy carried out in hatcheries was evaluated and differences at fidelity of hatchery stocks ...