A comparative analysis of marine mammal tracheas

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dc.contributor.authorMoore, Colby D.
dc.contributor.authorMoore, Michael
dc.contributor.authorTrumble, Stephen
dc.contributor.authorNiemeyer, Misty
dc.contributor.authorLentell, Betty
dc.contributor.authorMcLellan, William
dc.contributor.authorCostidis, Alexander
dc.contributor.authorFahlman, Andreas
dc.creator.orcidhttp://orcid.org/0000-0001-6319-9633en_US
dc.creator.orcidhttps://orcid.org/0000-0003-4617-9029en_US
dc.creator.orcidhttp://orcid.org/0000-0002-8675-6479en_US
dc.creator.orcidhttp://orcid.org/0000-0001-6319-9633
dc.creator.orcidhttps://orcid.org/0000-0003-4617-9029
dc.creator.orcidhttp://orcid.org/0000-0002-8675-6479
dc.date.accessioned2022-05-09T14:02:04Z
dc.date.available2022-05-09T14:02:04Z
dc.date.issued2014-04-01
dc.description.abstractIn 1940, Scholander suggested that stiffened upper airways remained open and received air from highly compressible alveoli during marine mammal diving. There are few data available on the structural and functional adaptations of the marine mammal respiratory system. The aim of this research was to investigate the anatomical (gross) and structural (compliance) characteristics of excised marine mammal tracheas. Here, we defined different types of tracheal structures, categorizing pinniped tracheas by varying degrees of continuity of cartilage (categories 1–4) and cetacean tracheas by varying compliance values (categories 5A and 5B). Some tracheas fell into more than one category along their length; for example, the harbor seal (Phoca vitulina) demonstrated complete rings cranially, and as the trachea progressed caudally, tracheal rings changed morphology. Dolphins and porpoises had less stiff, more compliant spiraling rings while beaked whales had very stiff, less compliant spiraling rings. The pressure–volume (P–V) relationships of isolated tracheas from different species were measured to assess structural differences between species. These findings lend evidence for pressure-induced collapse and re-inflation of lungs, perhaps influencing variability in dive depth or ventilation rates of the species investigated.en_US
dc.description.sponsorshipThis project was supported by a grant from the Office of Naval Research [grant number N00014-10-1-0059].en_US
dc.identifier.citationMoore, C., Moore, M., Trumble, S., Niemeyer, M., Lentell, B., McLellan, W., Costidis, A. and Fahlman, A., 2014. A comparative analysis of marine mammal tracheas. Journal of Experimental Biology, 217(7), pp.1154-1166.en_US
dc.identifier.doihttps://doi.org/10.1242/jeb.093146
dc.identifier.urihttps://hdl.handle.net/1969.6/90566
dc.language.isoen_USen_US
dc.publisherThe Company Of Biologistsen_US
dc.subjectdivingen_US
dc.subjectlung collapseen_US
dc.subjectpressure–volumeen_US
dc.subjectcomplianceen_US
dc.subjectdiving physiologyen_US
dc.subjectalveolar compressionen_US
dc.titleA comparative analysis of marine mammal tracheasen_US
dc.typeArticleen_US

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