Data from: Estimating the effective number of breeders from single parr samples for conservation monitoring of wild populations of Atlantic salmon Salmo salar ...

• Main Authors: Bacles, Cecile F. E., Bouchard, Colin, Lange, Frédéric, Manicki, Aurélie, Tentelier, Cédric, Lepais, Olivier
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: genetic monitoring; Nb; small population genetics; young-of-the-year; sibship reconstruction; Salmo salar; Colony; effective number of breeders; Atlantic salmon
• Online Access: https://dx.doi.org/10.5061/dryad.f5229; https://datadryad.org/stash/dataset/doi:10.5061/dryad.f5229

This study assesses whether the effective number of breeders (Nb) can be estimated using a time and cost-effective protocol using genetic sibship reconstruction from a single sample of young-of-the-year (YOY) for the purposes of Atlantic salmon Salmo salar population monitoring. Nb was estimated for 10 consecutive reproductive seasons for S. salar in the River Nivelle, a small population located at the rear-edge of the species distribution area in France, chronically under its conservation limit and subjected to anthropogenic and environmental changes. Subsampling of real and simulated data showed that accurate estimates of Nb can be obtained from YOY genotypes, collected at moderate random sampling intensity, achievable using routine juvenile electrofishing protocols. Spatial bias and time elapsed since spawning were found to affect estimates, which must be accounted for in sampling designs. Nb estimated in autumn for S. salar in the River Nivelle was low and variable across years from 23 (95% C.I. 14–41) ... : Multilocus microsatellites dataDryad_Bacles-et-al_JFB-2018.xlsx ...