Standardization of CPUE data from the Aleutian Islands Golden King Crab Fishery: Observer and Fish Ticket Data
Our primary task is to standardize the catch-per-unit-effort (CPUE) of observer pot sample and retained catch data to input to the Aleutian Islands golden king crab (GKC) assessment model (Siddeek et al., 2011). We presented an initial analysis to standardize the observer CPUE data using generalized...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.396.9700 http://www.alaskafisheries.noaa.gov/npfmc/PDFdocuments/resources/SAFE/CrabSAFE/912Chapters/AIGKCdata.pdf |
| Summary: | Our primary task is to standardize the catch-per-unit-effort (CPUE) of observer pot sample and retained catch data to input to the Aleutian Islands golden king crab (GKC) assessment model (Siddeek et al., 2011). We presented an initial analysis to standardize the observer CPUE data using generalized linear model (GLM) at the May 2012 Crab Plan Team (CPT) meeting. The CPT and the Scientific and Statistical Committee (SSC) made a number of recommendations to improve the standardization procedure. The CPT also recommended that we compare the assessment results using new and old standardized data. In this draft report we focused only on a comprehensive CPUE standardization procedure for observer and fish ticket (retained catch) data and deferred their use in the assessment model as the next step. We used the fish ticket retained catch data for 1985/86–2010/11 and observer pot sample data for 1995/91–2010/11 to compute yearly CPUE indexes with confidence intervals. We computed the indexes for the whole Aleutian Islands region, east and west of 174°W. 1 Responses to some major CPT and SSC comments 1. For the combined CPUE index authors should estimate confidence intervals. We used the Jackknife procedure, by removing one vessel at a time, to determine the mean, standard error, and confidence interval (personal communication, Doonan, New Zealand) for the |
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