Fur seals do, but sea lions don't - cross taxa insights into exhalation during ascent from dives.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
Sascha K HookerJ Chris McKnight

Abstract

Management of gases during diving is not well understood across marine mammal species. Prior to diving, phocid (true) seals generally exhale, a behaviour thought to assist with the prevention of decompression sickness. Otariid seals (fur seals and sea lions) have a greater reliance on their lung oxygen stores, and inhale prior to diving. One otariid, the Antarctic fur seal (Arctocephalus gazella), then exhales during the final 50-85% of the return to the surface, which may prevent another gas management issue: shallow-water blackout. Here, we compare data collected from animal-attached tags (video cameras, hydrophones and conductivity sensors) deployed on a suite of otariid seal species to examine the ubiquity of ascent exhalations for this group. We find evidence for ascent exhalations across four fur seal species, but that such exhalations are absent for three sea lion species. Fur seals and sea lions are no longer genetically separated into distinct subfamilies, but are morphologically distinguished by the thick underfur layer of fur seals. Together with their smaller size and energetic dives, we suggest their air-filled fur might underlie the need to perform these exhalations, although whether to reduce buoyancy and ascent ...Continue Reading

References

May 1, 1977·The Journal of Clinical Investigation·D L Eckberg, C R Orshan
Mar 1, 1975·The Journal of Physiology·B T Haymet, D I McCloskey
Nov 1, 1973·Respiration Physiology·D Kerem, R Elsner
Dec 1, 1971·Respiration Physiology·D M DenisonJ B West
Jan 1, 1981·Annual Review of Physiology·G L KooymanR W Davis
Jul 1, 1980·The Journal of Physiology·D L EckbergV L Roberts
Jul 1, 1997·Physiological Reviews·P J Butler, D R Jones
Jul 7, 2001·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·D P CostaM E Goebel
Dec 25, 2004·Science·Michael J Moore, Greg A Early
Mar 1, 2005·Proceedings. Biological Sciences·Sascha K HookerIan L Boyd
Apr 28, 2006·The Journal of Animal Ecology·Shannon L FowlerCarey E Kuhn
Nov 13, 2007·BMC Evolutionary Biology·Jeff W HigdonSteven H Ferguson
Oct 14, 2011·Proceedings. Biological Sciences·S DennisonR S Wells
Oct 18, 2011·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Michelle R SheroJennifer M Burns
Sep 21, 2012·Biology Letters·Birgitte I McDonald, Paul J Ponganis
Jan 29, 2013·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Carling D GerlinskyAndrew W Trites
Jun 19, 2013·Behavioural Processes·Kagari AokiKatsufumi Sato
Aug 9, 2013·The Journal of Experimental Biology·Birgitte I McDonald, Paul J Ponganis
May 3, 2014·The Journal of Experimental Biology·Birgitte I McDonald, Paul J Ponganis
Nov 3, 2016·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Monique A LaddsRobert G Harcourt
May 19, 2017·The Journal of Experimental Biology·Andreas FahlmanDaniel Garcia-Parraga
Oct 21, 2017·Scientific Reports·A FernándezY Bernaldo de Quirós
May 1, 1963·Journal of Applied Physiology·E H Lanphier, H Rahn
May 1, 1963·Journal of Applied Physiology·E H Lanphier, H Rahn

❮ Previous
Next ❯

Citations

Jun 15, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·L A HawkesK Sato

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.