University Of Tasmania
133806 - Population dynamics and life-history plasticity of mackerel icefish.pdf (676.43 kB)
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Population dynamics and life-history plasticity of mackerel icefish (Champsocephalus gunnari) within the vicinity of Heard Island and the McDonald Islands

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conference contribution
posted on 2023-05-23, 14:08 authored by Dale MaschetteDale Maschette, Welsford, D
Mackerel icefish (Champsocephalus gunnari) are found associated with sub-Antarctic islands and continental shelves in the Atlantic and Indian sectors of the Southern Ocean between the Polar Front and the Southern Boundary of the Antarctic Circumpolar Current. Mackerel icefish are one of the most common fishes encountered across the shallow (<500 m) Kerguelen Plateau north of 60°S. The species was targeted in this area by unregulated fisheries in the 1970s until fishing ceased due to low catch rates, the declaration of the French exclusive economic zone (EEZ) around Iles Kerguelen and the Australian Fishing Zone around Heard and McDonald Islands (HIMI). Commercial fishing of mackerel icefish by Australian vessels at HIMI commenced in 1997 and continues to this day. Catches are characterised by high interannual variability, due in large part to the population being dominated by a single year class, resulting from recruitment that occurs on a three-year cycle.


Publication title

The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium


D Welsford, J Dell and G Duhamel






Institute for Marine and Antarctic Studies


Australian Antarctic Division

Place of publication


Event title

The Kerguelen Plateau: marine ecosystem and fisheries

Event Venue

Hobart, Tasmania

Date of Event (Start Date)


Date of Event (End Date)


Rights statement

Copyright 2017 The Department of the Environment and Energy, Australian Antarctic Division

Repository Status

  • Open

Socio-economic Objectives

Fisheries - wild caught not elsewhere classified

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