Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals
Searching and capturing prey are extraordinary challenges for marine mammals, as they must actively hunt during breath‐hold dives. This challenge is conquered by the dive response (the decreased heart rate and increased peripheral vasoconstriction associated with a breath hold), which lowers the rat...
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crwiley:10.1096/fasebj.2022.36.s1.r5937 2024-06-02T08:06:01+00:00 Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals Hannah, Shawn M. Williams, Cassondra L. Hindle, Allyson G. Cooley, Lauren A. Ponganis, Paul J. Horning, Markus Klinck, Holger Costa, Daniel P. McDonald, Birgitte I. National Science Foundation 2022 http://dx.doi.org/10.1096/fasebj.2022.36.s1.r5937 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor The FASEB Journal volume 36, issue S1 ISSN 0892-6638 1530-6860 journal-article 2022 crwiley https://doi.org/10.1096/fasebj.2022.36.s1.r5937 2024-05-03T11:31:13Z Searching and capturing prey are extraordinary challenges for marine mammals, as they must actively hunt during breath‐hold dives. This challenge is conquered by the dive response (the decreased heart rate and increased peripheral vasoconstriction associated with a breath hold), which lowers the rate of oxygen consumption and prolongs the duration of aerobic metabolism. The dive response is dynamic and potentially influenced by dive duration, depth, anticipation, and exercise. However, it is still unknown how these influences interact with each other to facilitate oxygen management pre‐ and post‐dive, during different dive phases, and at fine scale. We studied the dive response of one of the deepest diving marine mammals, the northern elephant seal ( Mirounga angustirostris ) across three years (2018, 2019, 2021) to determine interactions between these behavioral and physiological factors. Using a biologger that records electrocardiogram data (50‐100 Hz) and a Daily Diary time‐depth‐recorder that records acceleration and depth, we calculated heart rate, stroke rate, and minimum specific acceleration (MSA) in 7 seals in dives as deep as 460m. We examined the influence of dive depth, duration, and activity (MSA) on dive heart rate, pre‐ and post‐dive heart rate, and heart rate during different dive phases and at fine scale. We recorded heart rates as low as 20 bpm during natural dives, with the average heart rate at depth being 48.91 ± 25.93 bpm. The heart rate rapidly drops at the start of dives from ~100‐120 bpm to ~40‐50 bpm and continues to decline as the seal passively drifts to depth. At the bottom seals tend to stroke and glide while maintaining a relatively stable heart rate. On ascent heart rate gradually increases as the seals stroke and glide to the surface. We see a drastic increase in heart rate just before seals surface, likely to maximize offloading of carbon dioxide and onloading of oxygen upon surfacing. Our preliminary results reveal that both dive depth and MSA influence the dive heart rate at ... Article in Journal/Newspaper Elephant Seal Elephant Seals Wiley Online Library The FASEB Journal 36 S1 |
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Wiley Online Library |
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English |
description |
Searching and capturing prey are extraordinary challenges for marine mammals, as they must actively hunt during breath‐hold dives. This challenge is conquered by the dive response (the decreased heart rate and increased peripheral vasoconstriction associated with a breath hold), which lowers the rate of oxygen consumption and prolongs the duration of aerobic metabolism. The dive response is dynamic and potentially influenced by dive duration, depth, anticipation, and exercise. However, it is still unknown how these influences interact with each other to facilitate oxygen management pre‐ and post‐dive, during different dive phases, and at fine scale. We studied the dive response of one of the deepest diving marine mammals, the northern elephant seal ( Mirounga angustirostris ) across three years (2018, 2019, 2021) to determine interactions between these behavioral and physiological factors. Using a biologger that records electrocardiogram data (50‐100 Hz) and a Daily Diary time‐depth‐recorder that records acceleration and depth, we calculated heart rate, stroke rate, and minimum specific acceleration (MSA) in 7 seals in dives as deep as 460m. We examined the influence of dive depth, duration, and activity (MSA) on dive heart rate, pre‐ and post‐dive heart rate, and heart rate during different dive phases and at fine scale. We recorded heart rates as low as 20 bpm during natural dives, with the average heart rate at depth being 48.91 ± 25.93 bpm. The heart rate rapidly drops at the start of dives from ~100‐120 bpm to ~40‐50 bpm and continues to decline as the seal passively drifts to depth. At the bottom seals tend to stroke and glide while maintaining a relatively stable heart rate. On ascent heart rate gradually increases as the seals stroke and glide to the surface. We see a drastic increase in heart rate just before seals surface, likely to maximize offloading of carbon dioxide and onloading of oxygen upon surfacing. Our preliminary results reveal that both dive depth and MSA influence the dive heart rate at ... |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Hannah, Shawn M. Williams, Cassondra L. Hindle, Allyson G. Cooley, Lauren A. Ponganis, Paul J. Horning, Markus Klinck, Holger Costa, Daniel P. McDonald, Birgitte I. |
spellingShingle |
Hannah, Shawn M. Williams, Cassondra L. Hindle, Allyson G. Cooley, Lauren A. Ponganis, Paul J. Horning, Markus Klinck, Holger Costa, Daniel P. McDonald, Birgitte I. Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals |
author_facet |
Hannah, Shawn M. Williams, Cassondra L. Hindle, Allyson G. Cooley, Lauren A. Ponganis, Paul J. Horning, Markus Klinck, Holger Costa, Daniel P. McDonald, Birgitte I. |
author_sort |
Hannah, Shawn M. |
title |
Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals |
title_short |
Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals |
title_full |
Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals |
title_fullStr |
Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals |
title_full_unstemmed |
Examining the Plasticity of the Dive Response in Relation to Dive Behavior of Northern Elephant Seals |
title_sort |
examining the plasticity of the dive response in relation to dive behavior of northern elephant seals |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1096/fasebj.2022.36.s1.r5937 |
genre |
Elephant Seal Elephant Seals |
genre_facet |
Elephant Seal Elephant Seals |
op_source |
The FASEB Journal volume 36, issue S1 ISSN 0892-6638 1530-6860 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1096/fasebj.2022.36.s1.r5937 |
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The FASEB Journal |
container_volume |
36 |
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S1 |
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1800750902148071424 |