Fish Disease Dynamics in the Klamath River 2018

Salmonid Research, Monitoring, and Evaluation (RM&E)

Research
Project IDYUROK-2017-3
Recovery DomainsN CA - S Oregon
Start Date06/01/2018
End Date09/30/2019
Year2017
StatusCompleted
Last Edited10/31/2019
 
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Description    


Project Objectives & Approach


This study is a continuation of an in-depth 12-month study of polychaete worm (a key fish disease vector) infection rates, life cycle dynamics, and relative abundance in the Klamath River. Fish disease has been identified as a key limiting factor for both Chinook salmon (a primary target species for Tribal fisheries) and coho salmon (listed as “Threatened” under the ESA). This study will be conducted in the upper reaches of the Klamath River near Iron Gate Dam in the area of maximum salmonid infection using an alternative method of individual examination to provide more detailed and accurate data. Another year of data collection will allow for analysis of inter-annual variation in infectivity rates and distribution of polychaete worm host organisms. Continued monitoring of polychaete worms will also allow us to examine the recently court ordered increased releases from Iron Gate Dam that are intended to disrupt the Ceratonova Shasta lifecycle.
During previous years we collected polychaete worms on a monthly basis year round. In 2018 we plan on focusing our efforts on certain important times of the year. These time periods are: late winter (worms are beginning to grow), spring (during the juvenile salmonid outmigration), mid-summer (when water temperatures are high and flows are low) and fall (during the spawning season). We will once again focus our efforts in the upper portion of the river (RM 160-190). We propose to collect polychaete worms so that researchers from OSU can determine the myxozoan infection rates, life cycle dynamics, and relative abundance of polychaete worms at index sites in the mainstem Klamath River to help monitor the efficiency of management action to reduce the myxozoan disease infectivity of the Klamath River.

Polychaete worms will be collected using a suction sampling device in the upper reaches of the Klamath River between Iron Gate Dam and the Shasta River. Soon after collection, samples will be sorted and polychaetes will be enumerated by YTFP staff to determine relative abundance at sample locations. A small portion of the collected worms will be sent to Oregon State University for genetic analysis to determine rate of infection. The results of the analysis will be included in a collaborative report with OSU and will be prepared after all field and lab work has been completed. Data from previous years of collection and analysis will also be included in this report.

Project Benefit    


PCSRF Goals, Objectives and Priorities addressed:
Understanding the life history and geographic distribution of the myxozoan disease C. shasta, is a crucial first step toward devising management strategies to reduce the impacts of this devastating disease. Reduction of impacts of this disease would fulfill many of the goals and objectives of the PCSRF including improving the status of ESA-listed coho salmon and ensuring the overall sustainability of naturally-spawning Pacific salmon and steelhead.

Outcomes & Benefits
Determine the myxozoan infection rates, life cycle dynamics, and relative abundance of polychaete worm at an index site in the mainstem Klamath River to help monitor the efficacy of management action to reduce the myxozoan disease infectivity of the Klamath River.

Provide data so that management actions (primarily water management related to the operation of the federally owned Klamath Irrigation Project and the Trinity Division of the Central Valley Project) can be improved with respect to their effect on anadromous fish in general, and particularly with respect to ESA-listed SONCC coho salmon and Chinook salmon important to the Yurok Tribe’s subsistence and commercial fisheries.

Accomplishments

Metric Completed Originally
Proposed

Funding Details

SourceFunds
PCSRF$15,000
Report Total:$15,000


Project Map



Worksites

Upper Klamath    


  • Worksite Identifier: Upper Klamath
  • Start Date: 05/01/2018
  • End Date: 09/30/2019
Area Description
Klamath River, upper

Location Information

  • Basin: Klamath
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: California
  • Recovery Domain: N CA - S Oregon
  • Latitude: 41.82703276696732
  • Longitude: -122.60165691375369

ESU

  • Upper Klamath / Trinity Rivers Chinook Salmon ESU
  • Southern Oregon / Northern California Coastal Chinook Salmon ESU
  • Southern Oregon/Northern California Coast Coho Salmon ESU
  • Klamath Mountains Province Steelhead DPS

Map

Photos

Metrics

Metrics
  • E.0 Salmonid Research, Monitoring, and Evaluation (RM&E)Y (Y/N)
    •      . . E.0.a RM&E Funding 15,000.00
    •      . . E.0.b
      Complement habitat restoration project
    •      . . E.0.c
      Project identified in a plan or watershed assessment.
    •      . . E.0.d.1 Number of Cooperating Organizations 1
    •      . . E.0.d.2
      Name Of Cooperating Organizations.
      Oregon State University
    •      . . E.0.e.1 Number of reports prepared 1
    •      . . E.0.e.2
      Name Of Report
      Fish Disease Dynamics in the Klamath River 2018
    •      . . E.2 ResearchY (Y/N)
      •      . . . . E.2.a Research Funding 15,000.00
      •      . . . . E.2.b.7 Investigating fish health and/or disease/parasitesY (Y/N)
        •      . . . . . . E.2.b.7.a
          Key issues addressed by fish health and/or disease/parasites research