Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives"
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 oxy...
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ftdatacite:10.6084/m9.figshare.c.5429384.v1 2023-05-15T13:34:57+02:00 Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" Hooker, Sascha K. Andrews, Russel D. Arnould, John P. Y. Bester, Marthán N. Davis, Randall W. Insley, Stephen J. Gales, Nick J. Goldsworthy, Simon D. McKnight, J. Chris 2021 https://dx.doi.org/10.6084/m9.figshare.c.5429384.v1 https://rs.figshare.com/collections/Supplementary_material_from_Fur_seals_do_but_sea_lions_don_t_cross_taxa_insights_into_exhalation_during_ascent_from_dives_/5429384/1 unknown The Royal Society https://dx.doi.org/10.1098/rstb.2020.0219 https://dx.doi.org/10.6084/m9.figshare.c.5429384 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Physiology FOS Biological sciences 60801 Animal Behaviour Collection article 2021 ftdatacite https://doi.org/10.6084/m9.figshare.c.5429384.v1 https://doi.org/10.1098/rstb.2020.0219 https://doi.org/10.6084/m9.figshare.c.5429384 2021-11-05T12:55:41Z 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 speed, for the avoidance of shallow-water blackout or to prevent other cardiovascular management issues in their diving remains unclear.This article is part of the theme issue ‘Measuring physiology in free living animals (Part I)’. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Physiology FOS Biological sciences 60801 Animal Behaviour |
spellingShingle |
Physiology FOS Biological sciences 60801 Animal Behaviour Hooker, Sascha K. Andrews, Russel D. Arnould, John P. Y. Bester, Marthán N. Davis, Randall W. Insley, Stephen J. Gales, Nick J. Goldsworthy, Simon D. McKnight, J. Chris Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" |
topic_facet |
Physiology FOS Biological sciences 60801 Animal Behaviour |
description |
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 speed, for the avoidance of shallow-water blackout or to prevent other cardiovascular management issues in their diving remains unclear.This article is part of the theme issue ‘Measuring physiology in free living animals (Part I)’. |
format |
Article in Journal/Newspaper |
author |
Hooker, Sascha K. Andrews, Russel D. Arnould, John P. Y. Bester, Marthán N. Davis, Randall W. Insley, Stephen J. Gales, Nick J. Goldsworthy, Simon D. McKnight, J. Chris |
author_facet |
Hooker, Sascha K. Andrews, Russel D. Arnould, John P. Y. Bester, Marthán N. Davis, Randall W. Insley, Stephen J. Gales, Nick J. Goldsworthy, Simon D. McKnight, J. Chris |
author_sort |
Hooker, Sascha K. |
title |
Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" |
title_short |
Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" |
title_full |
Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" |
title_fullStr |
Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" |
title_full_unstemmed |
Supplementary material from "Fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" |
title_sort |
supplementary material from "fur seals do, but sea lions don't — cross taxa insights into exhalation during ascent from dives" |
publisher |
The Royal Society |
publishDate |
2021 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5429384.v1 https://rs.figshare.com/collections/Supplementary_material_from_Fur_seals_do_but_sea_lions_don_t_cross_taxa_insights_into_exhalation_during_ascent_from_dives_/5429384/1 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella |
op_relation |
https://dx.doi.org/10.1098/rstb.2020.0219 https://dx.doi.org/10.6084/m9.figshare.c.5429384 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5429384.v1 https://doi.org/10.1098/rstb.2020.0219 https://doi.org/10.6084/m9.figshare.c.5429384 |
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