Norton Sound Red King Crab Model CIE Review Summary May 2019 Toshihide “Hamachan” Hamazaki, Jie Zheng Alaska Department of Fish & Game Division of Commercial Fisheries

Common theme More and better informative data, better assessment model results. Improve trawl survey abundance More biological, life-history data, growth, age, maturity, spatial- distribution. More studies and/or more extensive surveys to understand the fate of larger crabs. Catch and discards: investigate accuracy of self-reporting

Reviewer: Yong Chen Short-term Long-term More robust model diagnoses Explore spatial delta-GLMM method to standardize survey abundance. Explore different size-intervals Full Bayesian Model Jittering Long-term Explore alternative survey design Habitat suitability modeling More studies in biology and life-history

Reviewer: Raouf Kilada Summary Biological/morphometric study to estimate size-at-maturity Estimate M, age of crab Use PIT tag for tagging study Assess accuracy of fish ticket data, more observers Long-term Obtain more reliable biological data

Reviewer: John Neilson Data Clarification of data weighting Validation of self-reporting (fish ticket data) Explore options for survey abundance Post stratification, model based approach Obtain better info on growth and age. Find location of large crabs