University of Cape Town
FISHERIES_2023_OCT_SWG-DEM_10 Toothfish CPUE (002).pdf (352.66 kB)

GLMM standardised trotline CPUE series for the toothfish resource in the Prince Edward Islands EEZ updated to include data up to the 2022 season

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posted on 2023-11-22, 08:17 authored by Anabela BrandaoAnabela Brandao, Doug ButterworthDoug Butterworth

An updated GLMM standardisation of trotline toothfish CPUE data is presented which includes new data for the 2022 “fishing-year”. Vessels with trotline gear stopped operating in the fishery from May 2022. Thus only partial CPUE data are available for the 2022 “fishing-year”. After a marked decrease in CPUE from 2015 to 2017, there has been a notable increase in the CPUE indices apart from a decline in the 2020 index. The 2021 index is the highest since 2012 and is close to the larger values estimated for the first three years (2010-2012) of the series. The 2022 index is down compared to the 2021 index, but still higher than the 2020 index.



Department of Mathematics and Applied Mathematics, University of Cape Town