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https://hdl.handle.net/2440/51954
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Type: | Journal article |
Title: | Routine metabolic rate of southern bluefin tuna (Thunnus maccoyii) |
Author: | Fitzgibbon, Q. Baudinette, R. Musgrove, R. Seymour, R. |
Citation: | Comparative Biochemistry and Physiology Part A: Molecular and Integrative Physiology, 2008; 150(2):231-238 |
Publisher: | Elsevier Science Inc |
Issue Date: | 2008 |
ISSN: | 1095-6433 1531-4332 |
Statement of Responsibility: | Q.P. Fitzgibbon, R.V. Baudinette, R.J. Musgrove and R.S. Seymour |
Abstract: | 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 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. |
Keywords: | Animals Tuna Body Weight Oxygen Basal Metabolism Temperature Respiration Swimming |
Description: | Copyright © 2006 Elsevier Inc. All rights reserved. |
DOI: | 10.1016/j.cbpa.2006.08.046 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/525464/description#description |
Published version: | http://dx.doi.org/10.1016/j.cbpa.2006.08.046 |
Appears in Collections: | Aurora harvest 5 Earth and Environmental Sciences publications |
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