Tag Archives: Auke Creek

Genetic changes associated with in-basin supplementation of a population of Sockeye salmon

This joint project by NOAA and the University of Alaska Fairbanks evaluates the long term fitness of hatchery and wild sockeye salmon within a small watershed in Southeast Alaska. Concern over preserving wild stock fitness in enhancement project watersheds has been expressed in the case of both the Pacific Salmon Commission (PSC) Transboundary River Plans on the Taku and Stikine Rivers, and the PSC Northern Boundary Treaty Area of Southern Southeast Alaska (Hugh Smith and MacDonald Lakes). Measurement of the fitness effects and potential impact of such enhancement projects is needed to avoid long term undesirable effects on wild stocks. Initial genetic sampling and trial fish culture work in 2008, 2009, and 2010 showed potential for utilizing microsatellite and single nucleotide polymorphism (SNP) markers to assess the parentage of Auke Lake sockeye and to identify the progeny of wild and enhanced fish, and this allows the evaluation of the survival and introgression, if any, of the enhanced fish into the wild population. Furthermore, we have demonstrated the ability to sample very close to 100% of the adult sockeye entering the system and provided a low impact design for sampling, capturing, maturing and spawning small numbers for use as brood stock in this study. During the summers of 2011, 2012 and 2013, we captured and held adult sockeye in the Auke Creek Research hatchery, and conducted experimental matings in all three years. We have incubated, cultured and released approximately 50,000 juvenile sockeye into Auke Lake in the springs of 2012, 2013, and 2014. Complete sampling of upstream migrating adult sockeye has occurred from 2008 thru 2015 and smolt sub-sampling has occurred in May and June of those years as well.

Beginning in 2016, additional objectives were added to cover the sampling, marking and recovery of coho salmon at Auke Creek. Because of the operational efficiencies and base support this was accomplished with a small budget increment. Auke Creek is the longest and most complete coho salmon time series in Southeast Alaska, and is used as an indicator of marine survival, harvest and productivity for coho in the region.

N17-I11 Genetic Changes Associated with In-basin Supplementation of Sockeye Report 2017

N16-I04 Genetic changes associated with in-basin supplementation of a population of sockeye (NOAA Component) 2016. Year 8

N15-I06 Genetic changes associated with in-basin supplementation of a population of sockeye salmon; Phase 3 (NOAA Component of Joint Proposal with UAF/ADFG McPhee/Gilk-Baumer). Year 7

N14-I05 Genetic Changes Associated with In-basin Supplementation of a Population of Sockeye Salmon; Phase 6 (NOAA Component of Joint Proposal). Year 6

N13-I05 Genetic changes associated with in-basin supplementation of a population of sockeye salmon; Phase 5, NOAA Component of Joint Proposal, Joyce (AFSC)

N12-I04 Genetic Changes Associated with In-basin Supplementation of Sockeye Salmon (NOAA Component). Year 4

N11-I10A Genetic Changes Associated with In-basin Supplementation of a Population of Sockeye Salmon; Phase 3 (UAF Component)

N10-I12 Genetic Changes Associated with In-basin Supplementation of a Population of Sockeye Salmon; Phase 2

N08-I26A Genetic Changes Associated with In-basin Supplementation of a Population of Sockeye Salmon; Feasibility (UA Fairbanks Component)

N08-I26B Genetic Changes Associated with In-basin Supplementation of a Population of Sockeye (NOAA Component)

 

Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, Alaska

The overarching goal of this joint project by the University of Alaska and the Alaska Department of Fish & Game is to use parentage-based tagging over three generations of experimental hatchery supplementation to quantify differences in fitness between wild and hatchery-origin sockeye salmon in Auke Creek, Alaska. Secondary goals of this research are to test for second-generation differences in fitness between wild and hatchery-origin individuals that spawn naturally, and to quantify changes in genetic diversity and population structure in the wild sockeye salmon population as a result of three generations of hatchery supplementation. Results of this study will provide information critical for assessing the relative costs and benefits of hatchery supplementation in managing sockeye salmon populations subject to the Pacific Salmon Treaty.

N19-I11B Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, AK 2019 Report

N18-I08B Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, AK Report 2018

N17-I10A Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, AK Report 2018

N16-I15A Assessing Effects of Supplementation on Fitness of Sockeye in Auke Creek, AK June 2014-June 2017

N15-I22A Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, AK. (UAF Component) Year 2 of 3

N15-I22B Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, AK. (ADFG Component) Year 2 of 3

N14-I34A Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, AK. (UAF Component) Year 1

N14-I34B Assessing Effects of Supplementation on Fitness of Sockeye Salmon in Auke Creek, AK. (ADFG Component) Year 1