Coded Wire Tag Program Review

Under the Pacific Salmon Treaty, fishing regimes for chinook and coho salmon are based on constraining stock, age, and fishery specific mortality rates for selected naturally spawning populations. Data to permit direct estimation of fishing mortality rates on individual populations of these species currently depend on the coded-wire tag program. Concern is now growing over the statistical reliability of this program and the ability to maintain the information expected from it.

A workshop was held on June 7-10, 2004 in Seattle, Washington to examine limitations of the CWT program and to evaluate the capacity of alternative technologies to provide data to improve assessment of chinook and coho salmon.

Workshop challenges and options:

To view the background and the function of the expert panel or view the agenda for the workshop click on the links below:

Final Report of the Expert Panel

Concerned about the ability of the coastwide Coded-wire Tag (CWT) program to continue to provide statistically reliable data to support fishery management decisions and salmon stock assessment programs, the Pacific Salmon Commission (PSC) in 2004 convened an eight member panel of scientists to examine the CWT program, consider new and emerging technologies, and provide recommendations to the PSC.

This Expert Panel held a workshop from June 7-10, 2004 to consider a number of presentations on topics relevant to its charge, discuss background papers that had been prepared for this purpose, and formulate its initial responses to the issues. Over the ensuing year, the Panel held a number of additional meetings and communicated regularly to further formulate and refine its findings and recommendations. In June, 2005, a draft of the EP’s report was submitted for scientific peer review. The Panel revised its report as it deemed appropriate in light of the peer review to produce its final report, which is now posted on the PSC website below. Additional information regarding the workshop and copies of the presentations and background documents are also available below.

Because the practical impact of the report ultimately will depend on the degree to which its findings and recommendations are accepted and implemented by the various U.S. and Canadian fishery management entities, the PSC has invited them to provide comments on the report to the PSC by December 15, 2005.

The PSC has now received comments from some of the fishery management entities and these have been posted below.  The comments will be included in an attachment when the report is formally published in hard copy form by the PSC in January 2006.

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ODFW Comments

Oregon Department of Fish and Wildlife
Date added : February 2006

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DFO Comments

Department of Fisheries and Oceans Canada
Date added : February 2006

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Nez Perce Comments

Nez Perce Tribe
Date added : January 2006

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CRITFC Comments

Columbia River Inter-Tribal Fish Commission
Date added : January 2006

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NMFS Comments

NOAA - U.S. National Marine Fisheries Service
Date added : December 2005

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NWIFC Response

Northwest Indian Fisheries Commission
Date added : December 2005

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PSMFC Response Letter

Pacific States Marine Fisheries Commission
Date added : December 2005

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USFWS Comments

U.S. Department of the Interior - Fish and Wildlife Services
Date added : December 2005

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WDFW Letter and Comments

Washington Department of Fish and Wildlife
Date added : December 2005

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ADFG Comments

Alaska Department of Fish and Game
Date added : December 2005

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CDFG Comments

California Department of Fish and Game
Date added : December 2005

Background Paper Bibliographies and Reports:

 

CWT Background Papers

 

PowerPoint Presentations from the Workshop:

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Agenda CWT 2004

Date added : June 2004

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CurrentUsesOfCWT

Date added : June 2004

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DataMatrix

Date added : June 2004

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IncidentalMortality

Date added : June 2004

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MassMarkings

Date added : June 2004

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MarkSelectiveFisheries

Date added : June 2004

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PotentialsForCoho

Date added : June 2004

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OtilithMarking

Date added : June 2004

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Agenda CWT 2004

Date added : June 2004

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CurrentUsesOfCWT

Date added : June 2004

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DataMatrix

Date added : June 2004

pdf
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IncidentalMortality

Date added : June 2004

pdf
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MassMarkings

Date added : June 2004

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MarkSelectiveFisheries

Date added : June 2004

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PotentialsForCoho

Date added : June 2004

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OtilithMarking

Date added : June 2004