Proceedings 2010/020

Proceedings of the Central and Arctic Regional Science Advisory Process on the biological characteristics and population assessment of Walleye, (Sander vitreus), from Tathlina Lake, Northwest Territories; February 16, 2010

Chairperson: Michael Papst

Summary

The Fisheries and Aquaculture Management Sector of Fisheries and Oceans Canada (DFO) has requested science advice on the current status of Walleye Sander vitreus from Tathlina Lake, NT and a recommendation for a total sustainable harvest level. Additionally, advice for long-term monitoring of the fishery was requested. The commercial fishery collapsed in 2001 and experimental gill netting was conducted on Tathlina Lake between 2001 and 2007 to collect biological and catch/effort data for assessment purposes. A Regional Advisory Process (RAP) meeting was held at the DFO office in Hay River on February 16, 2010 to review the scientific information and develop the science advice. The participants included DFO Science, DFO Fisheries and Aquaculture Management, Dehcho biologist, and external experts from Ontario and Alberta. Participants agreed with the interpretation of an improvement in the status of the population and supported a conservative quota for the fishery. Long-term monitoring will include continued commercial plant sampling, periodic experimental gill netting, a traditional knowledge study and collection of water quality parameters that are correlated with Walleye productivity. Key documents expected from the RAP meeting will include a Research Document, Stock Advisory Report and proceedings.

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