FISHERIES_2020_JUN_SWG-PEL_40.pdf (478.35 kB)

The South African anchovy assessment with an informative prior distribution on the bias in hydroacoustic survey estimates of abundance

Download (478.35 kB)
report
posted on 05.02.2021, 10:24 by Carryn de Moor
The assessment of South African anchovy has been updated to consider an informative prior distribution on the bias in hydroacoustic survey estimates of abundance. By removing the assumption that the Daily Egg Production Method indices of abundance provide an absolute time‐series of estimates of anchovy spawner biomass, the model estimated biomasses from two alternative time‐invariant maturity ogives converge. These results will be further updated once an ongoing analysis of annual maturity ogives is completed.

History

Department/Unit

Department of Mathematics and Applied Mathematics, University of Cape Town