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Routine metabolic rate of southern bluefin tuna (Thunnus maccoyii)

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dc.contributor.authorFitzgibbon, Q.
dc.contributor.authorBaudinette, R.
dc.contributor.authorMusgrove, R.
dc.contributor.authorSeymour, R.
dc.date.issued2008
dc.descriptionCopyright © 2006 Elsevier Inc. All rights reserved.
dc.description.abstractRoutine 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 kg(-1) h(-1) (+/-34.9) at a mean water temperature of 19 degrees 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 M(0.86), R(2)=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.
dc.description.statementofresponsibilityQ.P. Fitzgibbon, R.V. Baudinette, R.J. Musgrove and R.S. Seymour
dc.description.urihttp://www.elsevier.com/wps/find/journaldescription.cws_home/525464/description#description
dc.identifier.citationComparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology, 2008; 150(2):231-238
dc.identifier.doi10.1016/j.cbpa.2006.08.046
dc.identifier.issn1095-6433
dc.identifier.issn1531-4332
dc.identifier.orcidSeymour, R. [0000-0002-3395-0059]
dc.identifier.urihttp://hdl.handle.net/2440/51954
dc.language.isoen
dc.publisherElsevier Science Inc
dc.source.urihttps://doi.org/10.1016/j.cbpa.2006.08.046
dc.subjectAnimals
dc.subjectTuna
dc.subjectBody Weight
dc.subjectOxygen
dc.subjectBasal Metabolism
dc.subjectTemperature
dc.subjectRespiration
dc.subjectSwimming
dc.titleRoutine metabolic rate of southern bluefin tuna (Thunnus maccoyii)
dc.typeJournal article
pubs.publication-statusPublished

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