Disease in Central Valley salmon: Status and lessons from other systems

Brendan M Lehman; Rachel C. Johnson; Mark Adkison; Oliver T Burgess; Richard E Connon; Nann A. Fangue; Scott J Foott; Sascha L Hallett; Beatriz Martinez-Lopez; Kristina M. Miller; Maureen K. Purcell; Nicholas A. Som; Pablo Valdes-Donoso; Alison L Collins

doi:10.15447//sfews.2020v18iss3art2

Disease in Central Valley salmon: Status and lessons from other systems

San Francisco Estuary and Watershed Science

By: Brendan M Lehman, Rachel C. Johnson, Mark Adkison, Oliver T Burgess, Richard E Connon, Nann A. Fangue, Scott J Foott, Sascha L Hallett, Beatriz Martinez-Lopez, Kristina M. Miller, Maureen K. Purcell, Nicholas A. Som, Pablo Valdes-Donoso, and Alison L Collins

https://doi.org/10.15447//sfews.2020v18iss3art2

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Abstract

Chinook Salmon (Oncorhynchus tshawytscha) are increasingly vulnerable to anthropogenic activities and climate change, especially at their most southern species range in California’s Central Valley. There is considerable interest in understanding stressors that contribute to population decline and in identifying management actions that reduce the impacts of those stressors. Along the west coast of North America, disease has been linked to declining numbers of salmonids and identified as a key stressor resulting in mortality. In the Central Valley, targeted studies have revealed extremely high prevalence of infectious agents and disease. However, there has been insufficient monitoring to understand the effect that disease may have on salmon populations. In order to inform future research, monitoring, and management efforts, a two-day workshop on salmon disease was held at UC Davis on March 14-15, 2018. This paper summarizes the science presented at this workshop, including the current state of knowledge of salmonid disease in the Central Valley and current and emerging tools to better understand its impacts on salmon. We highlight case studies from other systems where successful monitoring programs have been implemented. First, in the Klamath River where the integration of several data collection and modeling approaches led to the development of successful management actions, and second in British Columbia where investment in researching novel technologies led to breakthroughs in the understanding of salmon disease dynamics. Finally, we identify key information and knowledge gaps necessary to guide research and management of disease in Central Valley salmon populations.

Suggested Citation

Lehman, B.M., Johnson, R.C., Adkison, M., Burgess, O.T., Connon, R., Fangue, N.A., Foott, S.J., Hallett, S.L., Martinez-Lopez, B., Miller, K.M., Purcell, M.K., Som, N.A., Valdes-Donoso, P., Collins, A.L., 2020, Disease in Central Valley salmon: Status and lessons from other systems: San Francisco Estuary and Watershed Science, v. 18, no. 3, 2, 31 p., https://doi.org/10.15447//sfews.2020v18iss3art2.

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Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Disease in Central Valley salmon: Status and lessons from other systems
Series title	San Francisco Estuary and Watershed Science
DOI	10.15447//sfews.2020v18iss3art2
Volume	18
Issue	3
Publication Date	September 26, 2020
Year Published	2020
Language	English
Publisher	University of California Davis
Contributing office(s)	Western Fisheries Research Center
Description	2, 31 p.
Country	United States
State	California
Other Geospatial	Central Valley