[MARMAM] New paper on energy requirements and lung function in free-ranging bottlenose dolphins

Andreas afahlman at whoi.edu
Wed Jan 17 07:38:23 PST 2018


Dear All,

We are pleased to announce that the following paper has been published looking at resting metabolic rate and lung function in free-ranging bottlenose dolphin

Fahlman, A., Brodsky, M., Wells, R., McHugh, K., Allen, J., Barleycorn, A., Sweeney, J. C., Fauquier, D. & Moore, M. 2018 Field energetics and lung function in wild bottlenose dolphins, Tursiops truncatus, in Sarasota Bay Florida. Royal Society Open Science 5, 171280. (DOI:10.1098/rsos.171280).
 
URL: http://rsos.royalsocietypublishing.org/content/5/1/171280

Abstract:
We measured respiratory flow-rates, and expired O2 in 32 (2-34 years, body mass [Mb] range: 73-291 kg) common bottlenose dolphins (Tursiops truncatus) during voluntary breaths on land or in water (between 2014 and 2017). The data were used to measure the resting O2 consumption rate ( , range: 0.76-9.45 ml O2 min-1 kg-1) and tidal volume (VT, range: 2.2-10.4 l) during rest. For adult dolphins, the resting VT, but not , correlated with body mass (Mb, range: 141-291kg) with an allometric mass-exponent of 0.41. These data suggest that the mass-specific VT of larger dolphins decreases considerably more than that of terrestrial mammals (mass-exponent: 1.03). The average resting s  was similar to previously published metabolic measurements from the same species. Our data indicate that the resting metabolic rate (RMR) for a 150 kg dolphin would be 3.9 ml O2 Ÿ min-1 Ÿ kg-1, and the metabolic rate for active animals, assuming a multiplier of 3-6, would range from 11.7-23.4 ml O2 Ÿ min-1 Ÿ kg-1. Our measurements provide novel data for resting energy use and respiratory physiology in wild cetaceans, which may have significant value for conservation efforts and for understanding the bioenergetic requirements of this species.

 
Please email me (afahlman at whoi.edu) if you would like a PDF copy of the paper or if you have any questions regarding the work.

Best regards,
Andreas




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