INTEGRATION OF CPUE DATA INTO ASSESSMENTS USING THE GENERALISED YIELD MODEL

• Main Authors: G. P. Kirkwood, A. J. Constable
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Patagonian Toothfish
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.468.3799; http://archive.ccamlr.org/ccamlr_science/Vol-08-2001/04kirkwood-constable.PDF

For the last three years, CCAMLR's Working Group on Fish Stock Assessment (WG-FSA) has accorded high priority to the development o f metlzods o f integrating di f ferent indicators o f stock status into assessments using the Generalised Yield Model (GYM). In this paper, w e propose a method, based on the use o f importance sampling, for incorporatirtg information o n trends i n standardised CPUEs into GYM assessments. The use o f the method is illustrated using data for Patagonian toothfish (Dissosticl?~ls eleginoldes) in Subarea 48.3. The method requires only very small adjustments t o the computer program implementing the GYM assessments. Ces trois dernisres annees, le groupe de travail de la CCAMLR charge de 116valuation des stocks de poissons (WG-FSA) a accord6 une haute priorit6?I la mise en place de m6thodes d'insertion de diffkrents ilzdicateurs de l'6tat d u stock daizs les 6valuations effectu6es au moyen du Modsle de rendelnent gen6ralis6 (GYM). Dans ce document, nous proposons une mkthode fondbe sur I'utilisation de 1'6chantillo11nage de l'importance pour int6grer les informations sur les tendances des CPUE normalisees dans les 6valuations effectukes par