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Deep diving by offshore bottlenose dolphins (Tursiops spp.)
Linköpings universitet, Institutionen för fysik, kemi och biologi, Biologi. Linköpings universitet, Tekniska fakulteten. Fdn Oceanograf Comunitat Valenciana, Spain; Kolmarden Wildlife Pk, Sweden; Fdn Oceanograf Comunitat Valenciana, Spain.
Mote Marine Lab, FL USA.
Natl Museum Bermuda, Bermuda.
Natl Museum Bermuda, Bermuda.
Vise andre og tillknytning
2023 (engelsk)Inngår i: Marine mammal science, ISSN 0824-0469, E-ISSN 1748-7692, Vol. 39, nr 4, s. 1251-1266Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We used satellite-linked tags to evaluate dive behavior in offshore bottlenose dolphins (Tursiops spp.) near the island of Bermuda. The data provide evidence that bottlenose dolphins commonly perform both long (>272 s) and deep (>199 m) dives, with the deepest and longest dives being to 1,000 m and 826 s (13.8 min), respectively. The data show a relationship between dive duration and dive depth for dives longer than about 272 s. There was a diurnal pattern to dive behavior, with most dives deeper than 50 m being performed at night; deep diving began at sunset and varied throughout the night. We used the cumulative frequency of dive duration to estimate a behavioral aerobic dive limit (bADL) of around 560-666 s (9.3-11.1 min) in adult dolphins in this population. Dives exceeding the bADL spent significantly longer time in the upper-most 50 m following a dive as compared with dives less than the bADL. We conclude that the offshore ecotype off Bermuda, unlike the shallow-diving near-shore bottlenose dolphin, is a deep-diving ecotype, and may provide a useful animal model to study extreme diving behavior and adaptations.

sted, utgiver, år, opplag, sider
WILEY , 2023. Vol. 39, nr 4, s. 1251-1266
Emneord [en]
bADL; behavioral aerobic dive limit; cetacean; dive behavior; dive physiology; extreme diving; marine mammal
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Identifikatorer
URN: urn:nbn:se:liu:diva-196068DOI: 10.1111/mms.13045ISI: 001007587300001OAI: oai:DiVA.org:liu-196068DiVA, id: diva2:1779406
Merknad

Funding Agencies|Office of Naval Research (ONR YIP award) [N00014-14-1-0563]; Dolphin Quest Inc.

Tilgjengelig fra: 2023-07-04 Laget: 2023-07-04 Sist oppdatert: 2023-12-04

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