Myoglobin concentration and oxygen stores in different functional muscle groups from three small cetacean species

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dc.contributor.authorArregui, Marina
dc.contributor.authorSingleton, Emily
dc.contributor.authorSaavedra, Pedro
dc.contributor.authorPabst, D. Ann
dc.contributor.authorMoore, Michael J.
dc.contributor.authorSierra, Eva
dc.contributor.authorRivero, Miguel A.
dc.contributor.authorCâmara, Nakita
dc.contributor.authorNiemeyer, Misty
dc.contributor.authorFahlman, Andreas
dc.contributor.authorMcLellan, William A.
dc.contributor.authorBernaldo de Quirós, Yara
dc.creator.orcidhttp://orcid.org/0000-0002-5954-0322en_US
dc.creator.orcidhttp://orcid.org/0000-0001-8085-6391en_US
dc.creator.orcidhttp://orcid.org/0000-0001-6985-9866en_US
dc.creator.orcidhttps://orcid.org/0000-0003-3074-6631en_US
dc.creator.orcidhttps://orcid.org/0000-0003-3749-8845en_US
dc.creator.orcidhttp://orcid.org/0000-0002-8675-6479en_US
dc.creator.orcidhttps://orcid.org/0000-0002-2611-0406en_US
dc.creator.orcidhttps://orcid.org/0000-0002-5954-0322
dc.creator.orcidhttps://orcid.org/0000-0001-8085-6391
dc.creator.orcidhttps://orcid.org/0000-0001-6985-9866
dc.creator.orcidhttps://orcid.org/0000-0003-3074-6631
dc.creator.orcidhttps://orcid.org/0000-0003-3749-8845
dc.creator.orcidhttps://orcid.org/0000-0002-8675-6479
dc.creator.orcidhttps://orcid.org/0000-0002-2611-0406
dc.creator.orcidhttps://orcid.org/0000-0002-5954-0322
dc.creator.orcidhttps://orcid.org/0000-0001-8085-6391
dc.creator.orcidhttps://orcid.org/0000-0001-6985-9866
dc.creator.orcidhttps://orcid.org/0000-0003-3074-6631
dc.creator.orcidhttps://orcid.org/0000-0003-3749-8845
dc.creator.orcidhttps://orcid.org/0000-0002-8675-6479
dc.creator.orcidhttps://orcid.org/0000-0002-2611-0406http://orcid.org/0000-0002-5954-0322
dc.creator.orcidhttp://orcid.org/0000-0001-8085-6391
dc.creator.orcidhttp://orcid.org/0000-0001-6985-9866
dc.creator.orcidhttps://orcid.org/0000-0003-3074-6631
dc.creator.orcidhttps://orcid.org/0000-0003-3749-8845
dc.creator.orcidhttp://orcid.org/0000-0002-8675-6479
dc.creator.orcidhttps://orcid.org/0000-0002-2611-0406
dc.date.accessioned2022-03-22T19:42:32Z
dc.date.available2022-03-22T19:42:32Z
dc.date.issued2021-02-09
dc.description.abstractCompared with terrestrial mammals, marine mammals possess increased muscle myoglobin concentrations (Mb concentration, g Mb · 100g−1 muscle), enhancing their onboard oxygen (O2) stores and their aerobic dive limit. Although myoglobin is not homogeneously distributed, cetacean muscle O2 stores have been often determined by measuring Mb concentration from a single muscle sample (longissimus dorsi) and multiplying that value by the animal’s locomotor muscle or total muscle mass. This study serves to determine the accuracy of previous cetacean muscle O2 stores calculations. For that, body muscles from three delphinid species: Delphinus delphis, Stenella coeruleoalba, and Stenella frontalis, were dissected and weighed. Mb concentration was calculated from six muscles/muscle groups (epaxial, hypaxial and rectus abdominis; mastohumeralis; sternohyoideus; and dorsal scalenus), each representative of different functional groups (locomotion powering swimming, pectoral fin movement, feeding and respiration, respectively). Results demonstrated that the Mb concentration was heterogeneously distributed, being significantly higher in locomotor muscles. Locomotor muscles were the major contributors to total muscle O2 stores (mean 92.8%) due to their high Mb concentration and large muscle masses. Compared to this method, previous studies assuming homogenous Mb concentration distribution likely underestimated total muscle O2 stores by 10% when only considering locomotor muscles and overestimated them by 13% when total muscle mass was considered.en_US
dc.identifier.citationArregui, M., Singleton, E.M., Saavedra, P., Pabst, D.A., Moore, M.J., Sierra, E., Rivero, M.A., Câmara, N., Niemeyer, M., Fahlman, A. and McLellan, W.A., 2021. Myoglobin Concentration and Oxygen Stores in Different Functional Muscle Groups from Three Small Cetacean Species. Animals, 11(2), p.451.en_US
dc.identifier.doihttps://doi.org/10.3390/ani11020451
dc.identifier.urihttps://hdl.handle.net/1969.6/90299
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectd. delphisen_US
dc.subjects. coeruleoalbaen_US
dc.subjects. frontalisen_US
dc.subjectmuscle massen_US
dc.subjectheterogeneityen_US
dc.subjectaerobic dive limiten_US
dc.titleMyoglobin concentration and oxygen stores in different functional muscle groups from three small cetacean speciesen_US
dc.typeArticleen_US

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