A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2016 random stratified trawl survey

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Document Number:

WG-FSA-16/26

Author(s):

D. Maschette and D. Welsford

Submitted By:

Mr Dale Maschette

Approved By:

Dr Dirk Welsford (Australia)

Accessibility Categories

Request permission to release each time (RP)

Agenda Item(s)

WG-FSA-16 - 3.1.3 - Champsocephalus gunnari Division 58.5.2

Abstract

The annual Random Stratified Trawl Survey was undertaken in Division 58.5.2 in the vicinity of Heard Island during April 2016. This paper provides a preliminary assessment of mackerel icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79^o 20’ E using standard CCAMLR methods (CMIX and Generalized Yield Model). A large 2+ cohort is dominating the population. These projections indicate that catches of 561 t in the 2016/17 season and 402 t in the 2017/18 season satisfy the CCAMLR decision rules.