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Surface and diving metabolic rates, and dynamic aerobic dive limits (dADL) in near- and off-shore bottlenose dolphins, Tursiops spp., indicate that deep diving is energetically cheap

Publication ,  Journal Article
Fahlman, A; Allen, AS; Blawas, A; Sweeney, J; Stone, R; Trainor, RF; Jensen, FH; McHugh, K; Allen, JB; Barleycorn, AA; Wells, RS
Published in: Marine Mammal Science
July 1, 2023

High-resolution dive depth and acceleration recordings from nearshore (Sarasota Bay, dive depth < 30 m), and offshore (Bermuda) bottlenose dolphins (Tursiops spp.) were used to estimate the diving metabolic rate (DMR) and the locomotor metabolic rate (LMR, L O2/min) during three phases of diving (descent, bottom, and ascent). For shallow dives (depth ≤ 30 m), we found no differences between the two ecotypes in the LMR during diving, nor during the postdive shallow interval between dives. For intermediate (30 m < depth ≤ 100 m) and deep dives (depth > 100 m), the LMR was significantly higher during ascent than during descent and the bottom phase by 59% and 9%, respectively. In addition, the rate of change in depth during descent and ascent (meters/second) increased with maximal dive depth. The dynamic aerobic dive limit (dADL) was calculated from the estimated DMR and the estimated predive O2 stores. For the Bermuda dolphins, the dADL decreased with dive depth, and was 18.7, 15.4, and 11.1 min for shallow, intermediate, and deep dives, respectively. These results provide a useful approach to understand the complex nature of physiological interactions between aerobic metabolism, energy use, and diving capacity.

Published In

Marine Mammal Science

DOI

EISSN

1748-7692

ISSN

0824-0469

Publication Date

July 1, 2023

Volume

39

Issue

3

Start / End Page

976 / 993

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 4102 Ecological applications
  • 3109 Zoology
  • 3103 Ecology
  • 0608 Zoology
  • 0603 Evolutionary Biology
  • 0602 Ecology
 

Citation

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Fahlman, A., Allen, A. S., Blawas, A., Sweeney, J., Stone, R., Trainor, R. F., … Wells, R. S. (2023). Surface and diving metabolic rates, and dynamic aerobic dive limits (dADL) in near- and off-shore bottlenose dolphins, Tursiops spp., indicate that deep diving is energetically cheap. Marine Mammal Science, 39(3), 976–993. https://doi.org/10.1111/mms.13023
Fahlman, A., A. S. Allen, A. Blawas, J. Sweeney, R. Stone, R. F. Trainor, F. H. Jensen, et al. “Surface and diving metabolic rates, and dynamic aerobic dive limits (dADL) in near- and off-shore bottlenose dolphins, Tursiops spp., indicate that deep diving is energetically cheap.” Marine Mammal Science 39, no. 3 (July 1, 2023): 976–93. https://doi.org/10.1111/mms.13023.
Fahlman, A., et al. “Surface and diving metabolic rates, and dynamic aerobic dive limits (dADL) in near- and off-shore bottlenose dolphins, Tursiops spp., indicate that deep diving is energetically cheap.” Marine Mammal Science, vol. 39, no. 3, July 2023, pp. 976–93. Scopus, doi:10.1111/mms.13023.
Fahlman A, Allen AS, Blawas A, Sweeney J, Stone R, Trainor RF, Jensen FH, McHugh K, Allen JB, Barleycorn AA, Wells RS. Surface and diving metabolic rates, and dynamic aerobic dive limits (dADL) in near- and off-shore bottlenose dolphins, Tursiops spp., indicate that deep diving is energetically cheap. Marine Mammal Science. 2023 Jul 1;39(3):976–993.
Journal cover image

Published In

Marine Mammal Science

DOI

EISSN

1748-7692

ISSN

0824-0469

Publication Date

July 1, 2023

Volume

39

Issue

3

Start / End Page

976 / 993

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 4102 Ecological applications
  • 3109 Zoology
  • 3103 Ecology
  • 0608 Zoology
  • 0603 Evolutionary Biology
  • 0602 Ecology