10.5061/DRYAD.SR7D5
Smith, Christian T.
United States Fish and Wildlife Service
French, Rod
Oregon Department of Fish and Wildlife
Lovtang, Jens
Confederated Tribes of the Warm Springs Reservation of OregonBranch of
Natural ResourcesFisheries DepartmentPost Office Box CWarm
SpringsOregon97756USA
Hand, David
United States Fish and Wildlife Service
Data from: Genetic composition of the Warm Springs River Chinook Salmon
population maintained following eight generations of hatchery production
Dryad
dataset
2015
hatchery
Oncorhynchus tshawytscha
single nucleotide polymorphism
Salmon
2015-06-02T00:00:00Z
2015-06-02T00:00:00Z
en
https://doi.org/10.1080/00028487.2014.931303
1491751 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Balancing the disparate objectives of fishery augmentation and
conservation of an endemic population presents a substantial challenge. In
the case of Warm Springs National Fish Hatchery (Warm Springs Hatchery),
strategies for achieving both objectives included incorporation of natural
fish into the hatchery broodstock and restricting proportions of hatchery
fish on the spawning grounds. The hatchery has been more successful in
implementing the latter, however, than the former. We analyzed seventy-six
SNP markers in Spring Chinook Salmon O. tshawytscha collected from the
Warm Springs River in 1976 – 1977 (prior to hatchery produciton) and
2001-2011 (post-hatchery) to examine whether the genetic characteristics
of the endemic population had changed during that time. Pre- and post-
hatchery collections clustered together when compared to Round Butte
Hatchery (a nearby segregated program) and other Columbia River
populations. The difference between pre- and post- hatchery collections
was non-significant (AMOVA), but post hatchery samples exhibited
significantly lower He. We observed some evidence of reduced effective
size (Ne) and increased genetic drift in fish produced at Warm Springs
Hatchery (relative to natural-origin fish), and even stronger evidence in
fish produced at Round Butte Hatchery. We conclude that natural-origin
fish returning to the Warm Springs River form a distinct group within the
Interior Columbia Basin Spring-run lineage and have changed very little
over the past eight generations. We further speculate that differences
between hatchery- and natural- origin fish at Warm Springs Hatchery are
expected to increase if hatchery operations remain static (little
integration of natural-origin fish and incorporation of Round Butte
Hatchery fish in broodstock).
Supplemental materialNames of SNP loci analyzed, raw genotype data,
missing data rates for each locus by collection and estimates of pairwise
divergence (FST) between all collections of Chinook Salmon.Smith et al
TAFS appendices final.xlsx
Warm Springs River
Deschutes River
Columbia River