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Results from the 2022 random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2

Citation

Maschette, D and Lamb, T and Ziegler, P, Results from the 2022 random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2, Commission for the Conservation of Antarctic Marine Living Resources, 23 September (2022) [Refereed Conference Paper]


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Official URL: https://meetings.ccamlr.org/en/wg-fsa-2022/07

Abstract

During April 2022, the annual random stratified trawl survey (RSTS) around Heard Island and McDonald Islands (HIMI) was conducted in CCAMLR Division 58.5.2, with the completion of 165 stations. The survey was conducted on the FV Cape Arkona. Sampling protocols such as the design and the duration of the hauls were similar to recent surveys, but with a new set of randomly selected haul stations. The catch of Patagonian toothfish (Dissostichus eleginoides) was 36.2 t. The catch of mackerel icefish (Champsocephalus gunnari) was 71 t which is the largest catch in the history of the survey. Biomass estimates for most of the managed by-catch species were similar to the survey averages in recent years whilst the biomass of Bathyraja murrayi has declined. Length and weight measurements were taken for 19,095 fish.

Item Details

Item Type:Refereed Conference Paper
Keywords:trawl surveys, fisheries, assessments
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fisheries management
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Fisheries - wild caught not elsewhere classified
UTAS Author:Maschette, D (Mr Dale Maschette)
ID Code:155009
Year Published:2022
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2023-01-23
Last Modified:2023-01-25
Downloads:0

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