Supportive Breeding Boosts Population Abundance with Minimal Negative Impacts on Fitness of Natural-origin Chinook Salmon in Johnson Creek – Data Updates
Abstract
We investigate relative reproductive success (RRS) of an ongoing supplementation program for Chinook Salmon in Johnson Creek, Idaho. Pedigrees of natural and hatchery-origin fish from five brood years were tracked over two generations with molecular markers. Results suggest that supplementation with 100% local, natural-origin broodstock may be a practice that can successfully boost population size with minimal negative genetic impacts to wild populations. Updates with 2006 and 2007 data to previously presented poster.
Authors
Citation
Hess, M.A., C.D. Rabe, J. Vogel, D.D. Nelson, and S.R. Narum. 2012. Supportive breeding boosts population abundance with minimal negative impacts on fitness of natural-origin Chinook Salmon in Johnson Creek. Future of Our Salmon Annual Conference, October 17-18, 2012. Portland, OR.