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Report2014

First Interim Report of the Stock Identification Methods Working Group (SIMWG), by correspondence. ICES CM 2014/SSGSUE:02

Cadrin, Steve; Florin, Ann-Britt; Svedäng, Henrik; Whitener, Zachary

Abstract

The Stock Identification Methods Working Group (SIMWG) worked by correspond-ence in 2014. The working group was chaired by Lisa Kerr (USA) with 13 members working by correspondence. The work plan for SIMWG in 2014 comprised four main Terms of Reference, most of which, being multiannual, will require additional work over the next two years: a ) Review recent advances in stock identification methods; b ) Build a reference database with updated information on known biological stocks for species of ICES interest; • Technical reviews and expert opinions on matters of stock identification, as requested by specific Working Groups and SCICOM; c ) Develop a universal framework for consistent usage of terminology rele-vant to stock identification; d ) Review and report on advances in mixed stock analysis, and assess their potential role in improving precision of stock assessment. ToR a) provides a comprehensive update on recent applications of stock identifica-tion techniques to ICES species of interest, summarizes new approaches in stock identification, and novel combinations of existing applications. ToR b) provides advice on blue whiting (Micromesistius poutassou) in the NE Atlan-tic (as requested by WGWIDE) and on Atlantic cod (Gadus morhua) in offshore Greenlandic waters (as requested by NWWG). The advice is reported in a new format which will be developed further to build a reference database on known biological stocks for ICES species of interest. ToR c) reports on the universal framework developed by SIMWG for consistent us-age of terminology relevant to stock identification. ToR d) briefly appraises work undertaken on mixed stock analysis and provides SIMWG's view on best practices in mixed stock analysis to improve stock assessment.

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Publisher: International Council for the Exploration of the Sea