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A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2021 random stratified trawl survey
conference contribution
posted on 2023-05-23, 15:38 authored by Dale MaschetteDale Maschette, Wotherspoon, S, Ziegler, PThe annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during April 2021. Based on data from this survey, this paper provides a preliminary assessment for mackerel icefish (Champsocephalus gunnari) population structure, abundance and yield in Division 58.5.2 using standard CCAMLR methods (CMIX and Generalized Yield Model). The 2021 survey showed a large 3+ cohort in the population and a high biomass. Based on the Grym implementation, catches of 1528 t in the 2021/22 season and 1138 t in the 2022/23 season satisfy the CCAMLR decision rules.
Funding
Fisheries Research & Development Corporation
History
Publication title
Commission for the Conservation of Antarctic Marine Living ResourcesVolume
WG-FSA-2021/20Department/School
Institute for Marine and Antarctic StudiesPublisher
CCAMLRPlace of publication
Hobart, TasmaniaEvent title
Commission for the Conservation of Antarctic Marine Living ResourcesRepository Status
- Restricted