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Email address for contact author: shareef.siddeek@alaska.gov Abstract—The golden king crab (Lithodes aequispinus) has traditionally been managed in the Aleutian Islands by using a constant catch strategy but interest in abundancebased management has emerged with the recent adoption of a sizebased stock assessment model. Management strategy evaluation (MSE) is commonly used to quantify conservation and economic tradeoffs of alternative management strategies, but computational constraints can impede the representation of all sources of uncertainty. We conducted a simplified MSE for the golden king crab that focused on what we regarded as the major uncertainties, including initial stock abundance, future recruitment, estimation of mature male biomass and abundance, and catch implementation error, while capturing the existing unique federal and state cooperative management framework for crab stocks in the Bering Sea and Aleutian Islands. The simplified MSE identified recruitment variability as the most important factor in determining overall fishery performance, and conservation and economic metrics highlight benefits of a 15% over a 30% exploitation rate. We feel this simplified approach results in a robust analysis despite the reduced computational demands compared with those of a full MSE. Similar approaches can be used for other stocks, but managers must define management objectives, consider stock dynamics, and identify factors likely to have the greatest effect on expected performance.

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Development of harvest control rules for hard-to-age crab stocks: the example of the golden king crab (Lithodes aequispinus) in the eastern Aleutian Islands in Alaska