Field energetics and lung function in wild bottlenose dolphins, Tursiops truncatus, in Sarasota Bay Florida
Wells, Randall S.
Sweeney, Jay C.
Fauquier, Deborah A.
Moore, Michael J.
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KeywordField metabolic rate; Pulmonary function test; Tidal volume; Diving physiology; Marine mammals; Spirometry
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 (V˙O2, range: 0.76–9.45ml O2min−1 kg−1) and tidal volume (VT, range: 2.2–10.4 l) during rest. For adult dolphins, the resting VT, but not V˙O2, correlated with body mass (Mb, range: 141–291 kg) 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 sV˙O2 was similar to previously published metabolic measurements from the same species. Our data indicate that the resting metabolic rate for a 150 kg dolphin would be 3.9 ml O2 min−1 kg−1, and the metabolic rate for active animals, assuming a multiplier of 3–6, would range from 11.7 to 23.4 ml O2 min−1 kg−1.
© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Royal Society Open Science 5 (2018): 171280, doi:10.1098/rsos.171280.
Suggested CitationArticle: Fahlman, Andreas, Brodsky, Micah, Wells, Randall S., McHugh, Katherine, Allen, Jason, Barleycorn, Aaron, Sweeney, Jay C., Fauquier, Deborah A., Moore, Michael J., "Field energetics and lung function in wild bottlenose dolphins, Tursiops truncatus, in Sarasota Bay Florida", Royal Society Open Science 5 (2018): 171280, DOI:10.1098/rsos.171280, https://hdl.handle.net/1912/9554
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