Article
 

Influence of ocean ecosystem variation on trophic interactions and survival of juvenile coho and Chinook salmon

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/td96k439c

Descriptions

Attribute NameValues
Creator
Abstract
  • The community of trophically transmitted marine parasites of juvenile coho (Oncorhynchus kisutch) and Chinook (Oncorhynchus tshawytscha) salmon across 8 years (2002–2009) was related to indices of physical and biological ocean conditions and adult returns. When the biomass of lipid-poor, southern origin copepods in the coastal ocean was high during juvenile salmon outmigration from fresh water (April–June), yearling coho and Chinook salmon harbored a different trophically transmitted parasite fauna and exhibited lower survival compared with years when the southern copepod biomass was low. As copepods are key intermediate hosts in many marine parasite life cycles, these results support a trophic linkage between the copepod community and salmon prey. Interannual variation in the parasite community was correlated with survival of coho salmon (r = −0.67) measured 1 year later and adult returns of Upper Columbia River summer and fall Chinook salmon (r = −0.94) 3 years from the time of ocean entry.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Losee, J. P., Miller, J. A., Peterson, W. T., Teel, D. J., & Jacobson, K. C. (2014). Influence of ocean ecosystem variation on trophic interactions and survival of juvenile coho and Chinook salmon. Canadian Journal of Fisheries and Aquatic Sciences, 71(11), 1747-1757. doi:10.1139/cjfas-2014-0043
Journal Title
Journal Volume
  • 71
Journal Issue/Number
  • 11
Rights Statement
Funding Statement (additional comments about funding)
  • Funding for this study was provided by the Bonneville Power Administration (contract No. 00053808), Oregon State University’s Cooperative Institute for Marine Resources Studies, the National Oceanic and Atmospheric Administration (NOAA), Mamie Markham Research Award, and the Neil Armantrout Scholarship from Oregon State University.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details MillerJessicaHMSCInfluenceOceanEcosystem.pdf 2017-07-26 Public Download