This project was initiated in 2004, and is a collaboration between the Northwest Fisheries Science Center and the Washington Department of Fish and Wildlife. The goal of the project is to empirically monitor the reproductive success of hatchery and natural spring Chinook salmon using a DNA-based pedigree approach. Specifically, we are (1) directly measuring the relative reproductive success of hatchery and natural-origin Chinook salmon in both natural and hatchery settings, (2) determining the degree to which any differences in reproductive success between hatchery and natural Chinook salmon can be explained by measurable biological characteristics such as run timing, morphology, behavior, or ecological characteristics such as spawning location and redd microhabitat, and (3) estimating the relative fitness of hatchery-lineage Chinook salmon after they have experienced an entire generation in the natural environment.
Murdoch AR, Pearsons TN, Ford MJ, Williamson K. 2006. Monitoring the reproductive success of naturally spawning hatchery and natural spring Chinook salmon in the Wenatchee River. Annual report to the Bonneville Power Administration. BPA Project No. 2003-039-00, Contract No. 00020391