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Energy content of mesopelagic fish from Macquarie Island

Published online by Cambridge University Press:  14 February 2003

MEGAN TIERNEY
Affiliation:
Antarctic Wildlife Research Unit, School of Zoology, University of Tasmania, PO Box 252-C, Hobart, TAS 7001, Australia Current address: Australian Antarctic Division, Channel Highway, Kingston, TAS 7050, AustraliaMegan.Tierney@aad.gov.au
MARK A. HINDELL
Affiliation:
Antarctic Wildlife Research Unit, School of Zoology, University of Tasmania, PO Box 252-C, Hobart, TAS 7001, Australia
SIMON GOLDSWORTHY
Affiliation:
CSIRO Marine Research, GPO Box 1538, Hobart, TAS 7001, Australia Current address: Sea Mammal Research Group, Zoology Department, La Trobe University, VIC 3086, Australia

Abstract

The water and calorific content of fifteen species of mesopelagic sub-Antarctic fish from Macquarie Island were determined. Mean percent water content was 69–82%. Calorific content was highly variable between species, especially in the Myctophidae, where it ranged between 22.6–59.3 kJ·g−1 dry weight. The water and calorific content varied with size class within a species, with the smallest size classes generally having the lowest water content but highest calorific content. These values will be useful for future assessment of energetic transfer between trophic levels and energetic modelling of Southern Ocean ecosystems.

Type
Research Article
Copyright
© Antarctic Science Ltd 2002

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