Static inflation and deflation pressure–volume curves from excised lungs of marine mammals
Loring, Stephen H.
Moore, Colby D.
Early, Greg A.
Niemeyer, Misty E.
Lentell, Betty J.
Wenzel, Frederick W.
Moore, Michael J.
MetadataShow full item record
Excised lungs from 8 marine mammal species (harp [Pagophilus groenlandicus], harbor [Phoca vitulina], and gray seal [Halichoerus grypus], Atlantic white-sided [Lagenorhynchus acutus], common [Delphinus delphis] and Risso's dolphin [Grampus griseus], long finned pilot whale [Globicephala melas], and harbor porpoise [Phocoena phocoena]) were used to determine minimum air volume of the relaxed lung (MAV, n = 15) and the elastic properties (pressure-volume curves, n = 24) of the respiratory system, and total lung capacity (TLC). Our data indicate that mass-specific TLC (sTLC, l • kg-1) does not differ between species or groups (odontocete vs. phocid) and agree with that estimated (TLCest) from body mass (Mb) by: TLCest = 0.135 • Mb 0.92. Measured MAV was on average 7% of TLC, with a range from 0% to 16%. The pressure-volume curves were similar among species on inflation but diverged during deflation in phocids as compared with odontocetes. These differences provide a structural basis for observed species differences in depth at which lungs collapse and gas exchange ceases.
Author Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of The Company of Biologists for personal use, not for redistribution. The definitive version was published in Journal of Experimental Biology 214 (2011): 3822-3828, doi:10.1242/jeb.056366.
Showing items related by title, author, creator and subject.
Pollard, Raymond T.; Tarbell, Susan A. (Woods Hole Oceanographic Institution, 1975-02)Summaries of wind and current measurements made with current meters and wind recorders by the Woods Hole Oceanographic Institution during June, July and August of 1970 are presented. Averaged quantities are presented ...
SyPRID sampler : a large-volume, high-resolution, autonomous, deep-ocean precision plankton sampling system Billings, Andrew F.; Kaiser, Carl; Young, Craig M.; Hiebert, Laurel S.; Cole, Eli; Wagner, Jamie K.S.; Van Dover, Cindy (Elsevier, 2016-05-19)The current standard for large-volume (thousands of cubic meters) zooplankton sampling in the deep sea is the MOCNESS, a system of multiple opening–closing nets, typically lowered to within 50 m of the seabed and towed ...
Webster, Ferris; Fofonoff, Nicholas P. (Woods Hole Oceanographic Institution, 1965-08)Summaries of current measurements made with Richardson current meters at three moored stations in the Western North Atlantic are presented. Averaged quantities are presented in the form of computer-plotted curves.