Article
 

Infections by Renibacterium salmoninarum and Nanophyetus salmincola Chapin are associated with reduced growth of juvenile Chinook salmon, Oncorhynchus tshawytscha (Walbaum), in the Northeast Pacific Ocean

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/rv042v707

Descriptions

Attribute NameValues
Creator
Abstract
  • We examined 1454 juvenile Chinook salmon, Oncorhynchus tshawytscha (Walbaum), captured in nearshore waters off the coasts of Washington and Oregon (USA) from 1999 to 2004 for infection by Renibacterium salmoninarum, Nanophyetus salmincola Chapin and skin metacercariae. The prevalence and intensities for each of these infections were established for both yearling and subyearling Chinook salmon. Two metrics of salmon growth, weight residuals and plasma levels of insulin- like growth factor- 1, were determined for salmon infected with these pathogens/parasites, both individually and in combination, with uninfected fish used for comparison. Yearling Chinook salmon infected with R. salmoninarum had significantly reduced weight residuals. Chinook salmon infected with skin metacercariae alone did not have significantly reduced growth metrics. Dual infections were not associated with significantly more severe effects on the growth metrics than single infections; the number of triple infections was very low and precluded statistical comparison. Overall, these data suggest that infections by these organisms can be associated with reduced juvenile Chinook salmon growth. Because growth in the first year at sea has been linked to survival for some stocks of Chinook salmon, the infections may therefore play a role in regulating these populations in the Northeast Pacific Ocean.
  • Keywords: pathogen, survival, parasite, disease ecology
  • Keywords: pathogen, survival, parasite, disease ecology
Resource Type
DOI
Date Available
Date Issued
Citation
  • Sandell, T. A., Teel, D. J., Fisher, J., Beckman, B., & Jacobson, K. C. (2015). Infections by Renibacterium salmoninarum and Nanophyetus salmincola Chapin are associated with reduced growth of juvenile Chinook salmon, Oncorhynchus tshawytscha (Walbaum), in the Northeast Pacific Ocean. Journal of fish diseases, 38(4), 365-378. doi:10.1111/jfd.12243
Journal Title
Journal Volume
  • 38
Journal Issue/Number
  • 4
Rights Statement
Funding Statement (additional comments about funding)
  • Funding for this research was provided by the Bonneville Power Administration, the Mamie Markham Research Award (HSMC, OSU), the John L. Fryer Fellowship (OSU), an Oregon Flyfisher's Club scholarship and the Harriet M. Winton Scholarship Fund (OSU).
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details SandellTMicrobiologyInfectionsRenibacteriumSalmoninarum.pdf 2017-07-25 Public Download