Article
 

Genetic Identification of Chinook Salmon: Stock-Specific Distributions of Juveniles along the Washington and Oregon Coasts

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/dr26z252z

Descriptions

Attribute NameValues
Creator
Abstract
  • We used microsatellite DNA data and genetic stock identification methods to delineate the temporal and spatial distributions of juvenile Chinook Salmon Oncorhynchus tshawytscha occupying coastal habitats extending from central Oregon to northern Washington. Juveniles were collected in trawl surveys conducted during spring, summer, and autumn over 15 years. Distributions (mean latitude and distance from shore) differed between yearling and subyearling life history types and between stocks; many of these differences were consistent across years. Yearlings were nearly all (98%) from Columbia River sources, and only 6% were naturally produced. In late May, yearlings from the lower Columbia and Willamette rivers were farther north than other yearlings, likely due to the early spring timing of their releases from hatcheries and subsequent out-migration from the Columbia River. However, yearling distributions in late June reflected known migration behaviors. Yearlings from interior Columbia and Snake River sources were farthest north by June, whereas yearlings from other stocks were more spread out in latitude. Subyearlings sampled in early summer were also largely from the Columbia River (98%), but greater percentages of subyearlings from coastal rivers were present during the fall (24%). In contrast to yearlings, natural production accounted for nearly one-third of subyearlings. Subyearlings of most stocks tended to remain relatively near their point of sea entry throughout the summer. Subyearlings from the Snake River fall-run stock and upper Columbia River summer–fall-run stock exhibited diverse distributions that included both southward and northward dispersal. Overall, distributions of Chinook Salmon stocks and life history types reflected differences in migration behavior but also reflected the influence of environmental factors and hatchery practices.
License
Resource Type
DOI
Date Available
Date Issued
Citation
  • Teel, D. J., Burke, B. J., Kuligowski, D. R., Morgan, C. A., & Van Doornik, D. M. (2015). Genetic identification of Chinook salmon: stock-specific distributions of juveniles along the Washington and Oregon coasts. Marine and Coastal Fisheries, 7(1), 274-300. doi:10.1080/19425120.2015.1045961
Journal Title
Journal Volume
  • 7
Journal Issue/Number
  • 1
Rights Statement
Funding Statement (additional comments about funding)
  • Funding for this study was provided by the Bonneville Power Administration and the National Oceanic and Atmospheric Administration Fisheries.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details MorganCherylHMSCGeneticIdentificationChinook.pdf 10/16/2017 Public
file details MorganCherylHMSCGeneticIdentificationChinookSupplement.pdf 10/16/2017 Public