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Routine metabolic rate of southern bluefin tuna (Thunnus maccoyii)


Fitzgibbon, QP and Baudinette, RV and Musgrove, RJ and Seymour, RS, Routine metabolic rate of southern bluefin tuna (Thunnus maccoyii), Comparative Biochemistry and Physiology Part A, 150, (2) pp. 231-238. ISSN 1095-6433 (2008) [Refereed Article]

Copyright Statement

Copyright 2006 Elsevier Inc.

DOI: doi:10.1016/j.cbpa.2006.08.046


Routine metabolic rate (RMR) was measured in fasting southern bluefin tuna, Thunnus maccoyii, the largest tuna species studied so far (body mass = 19.6 kg ( 1.9 SE)). Mean mass-specific RMR was 460 mg kg1 h− 1 ( 34.9) at a mean water temperature of 19 C. When evaluated southern bluefin tuna standard metabolic rate (SMR) is added to published values of other tuna species, there is a strong allometeric relationship with body mass (423 M0.86, R2 = 0.97). This demonstrates that tuna interspecific SMR scale with respect to body mass similar to that of other active teleosts, but is approximately 4-fold higher. However, RMR (not SMR) is most appropriate in ram-ventilating species that are physiologically unable to achieve complete rest. Respiration was measured in a large (250,000 l) flexible polypropylene respirometer (mesocosm respirometer) that was deployed within a marine-farm sea cage for 29 days. Fasted fish were maintained within the respirometer up to 42 h while dissolved oxygen dropped by 0.056 ( 0.004) mg l− 1 h− 1. Fish showed no obvious signs of stress. They swam at 1.1 ( 0.1) fork lengths per second and several fed within the respirometer immediately after measurements.

Item Details

Item Type:Refereed Article
Keywords:tuna, metabolism, scaling, routine metabolic rate, oxygen, consumption, respirometer, mesocosm, southern bluefin tuna, Thunnus maccoyii
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Fisheries - aquaculture not elsewhere classified
UTAS Author:Fitzgibbon, QP (Associate Professor Quinn Fitzgibbon)
ID Code:94745
Year Published:2008
Web of Science® Times Cited:25
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2014-09-16
Last Modified:2014-10-07

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