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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
Citation
Maschette, D and Welsford, D, Population dynamics and life-history plasticity of mackerel icefish (Champsocephalus gunnari) within the vicinity of Heard Island and the McDonald Islands, The Kerguelen Plateau: marine ecosystem and fisheries. Proceedings of the Second Symposium, 13-14 November 2017, Hobart, Tasmania, pp. 255-258. ISBN 9781876934309 (2019) [Refereed Conference Paper]
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Copyright Statement
Copyright 2017 The Department of the Environment and Energy, Australian Antarctic Division
Official URL: http://heardisland.antarctica.gov.au/research/kerg...
Abstract
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.
Item Details
Item Type: | Refereed Conference Paper |
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Keywords: | bycatch, icefish, Heard Island, McDonald Islands, population dynamics |
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: | 133806 |
Year Published: | 2019 |
Deposited By: | Fisheries and Aquaculture |
Deposited On: | 2019-07-11 |
Last Modified: | 2019-10-23 |
Downloads: | 11 View Download Statistics |
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