Activity as a proxy to estimate metabolic rate and to partition the metabolic cost of diving vs. breathing in pre- and post-fasted Steller sea lions

dc.contributor.authorFahlman, Andreas
dc.contributor.authorSvärd, C.
dc.contributor.authorRosen, D. A. S.
dc.contributor.authorWilson, R. P.
dc.contributor.authorTrites, Andrew
dc.creator.orcidhttp://orcid.org/0000-0002-8675-6479en_US
dc.creator.orcidhttps://orcid.org/0000-0003-0342-5322en_US
dc.creator.orcidhttps://orcid.org/0000-0002-8675-6479
dc.creator.orcidhttps://orcid.org/0000-0003-0342-5322
dc.creator.orcidhttps://orcid.org/0000-0002-8675-6479
dc.creator.orcidhttps://orcid.org/0000-0003-0342-5322http://orcid.org/0000-0002-8675-6479
dc.creator.orcidhttps://orcid.org/0000-0003-0342-5322
dc.date.accessioned2022-03-04T19:49:18Z
dc.date.available2022-03-04T19:49:18Z
dc.date.issued2013-04-30
dc.description.abstractThree Steller sea lions Eumetopias jubatus, trained to dive voluntarily to depths ranging from 10 to 50 m, were used to determine whether the relationship between activity and metabolic rate during a diving interval (MRDI, dive + surface interval) was affected by fasting (9 d) during the breeding season (spring through summer). We subsequently used the relationship between activity and MRDI to partition the metabolic costs between underwater breath-holding activity and surface breathing activities. We estimated activity from overall dynamic body acceleration (ODBA) measured using a 3-axis accelerometer, and measured MRDI using flow-through respirometry. The relationship between ODBA-based activity and MRDI was not affected by fasting period, suggesting that ODBA can be used to predict energy expenditure regardless of nutritional state in the spring and summer. However, the relationship between ODBA and dive metabolic rate differs from the relationship between ODBA and the surface metabolic rate before diving. Partitioning MRDI into the metabolic cost of remaining at the surface versus swimming underwater suggests that the metabolic cost of diving for Steller sea lions is approximately 29% lower than when breathing at the surface. ODBA appears to be a reasonable proxy to estimate metabolic rate in marine mammals, but more detailed behavioral data may be required to accurately apply the method in the field.en_US
dc.identifier.citationFahlman, A., Svärd, C., Rosen, D.A.S., Wilson, R.P. and Trites, A.W., 2013. Activity as a proxy to estimate metabolic rate and to partition the metabolic cost of diving vs. breathing in pre-and post-fasted Steller sea lions. Aquatic Biology, 18(2), pp.175-184.en_US
dc.identifier.doihttps://doi.org/10.3354/ab00500
dc.identifier.urihttps://hdl.handle.net/1969.6/90239
dc.language.isoen_USen_US
dc.publisherInter-Research Science Publisheren_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectsea lionsen_US
dc.subjectsteller sea lionsen_US
dc.subjectmarine mammalsen_US
dc.subjectbreath-hold divingen_US
dc.subjectfield energeticsen_US
dc.subjectodbaen_US
dc.titleActivity as a proxy to estimate metabolic rate and to partition the metabolic cost of diving vs. breathing in pre- and post-fasted Steller sea lionsen_US
dc.typeArticleen_US

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