Cargando…

Visual deprivation induces a stronger dive response in a harbor porpoise

The dive response allows marine mammals to perform prolonged breath-hold dives to access rich marine prey resources. Via dynamic adjustments of peripheral vasoconstriction and bradycardia, oxygen consumption can be tailored to breath-hold duration, depth, exercise, and even expectations during dives...

Descripción completa

Detalles Bibliográficos
Autores principales: Bakkeren, Ciska, Ladegaard, Michael, Hansen, Kirstin Anderson, Wahlberg, Magnus, Madsen, Peter Teglberg, Rojano-Doñate, Laia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9982314/
https://www.ncbi.nlm.nih.gov/pubmed/36876128
http://dx.doi.org/10.1016/j.isci.2023.106204
_version_ 1784900304482861056
author Bakkeren, Ciska
Ladegaard, Michael
Hansen, Kirstin Anderson
Wahlberg, Magnus
Madsen, Peter Teglberg
Rojano-Doñate, Laia
author_facet Bakkeren, Ciska
Ladegaard, Michael
Hansen, Kirstin Anderson
Wahlberg, Magnus
Madsen, Peter Teglberg
Rojano-Doñate, Laia
author_sort Bakkeren, Ciska
collection PubMed
description The dive response allows marine mammals to perform prolonged breath-hold dives to access rich marine prey resources. Via dynamic adjustments of peripheral vasoconstriction and bradycardia, oxygen consumption can be tailored to breath-hold duration, depth, exercise, and even expectations during dives. By investigating the heart rate of a trained harbor porpoise during a two-alternative forced choice task, where the animal is either acoustically masked or blindfolded, we test the hypothesis that sensory deprivation will lead to a stronger dive response to conserve oxygen when facing a more uncertain and smaller sensory umwelt. We show that the porpoise halves its diving heart rate (from 55 to 25 bpm) when blindfolded but presents no change in heart rate during masking of its echolocation. Therefore, visual stimuli may matter more to echolocating toothed whales than previously assumed, and sensory deprivation can be a major driver of the dive response, possibly as an anti-predator measure.
format Online
Article
Text
id pubmed-9982314
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-99823142023-03-04 Visual deprivation induces a stronger dive response in a harbor porpoise Bakkeren, Ciska Ladegaard, Michael Hansen, Kirstin Anderson Wahlberg, Magnus Madsen, Peter Teglberg Rojano-Doñate, Laia iScience Article The dive response allows marine mammals to perform prolonged breath-hold dives to access rich marine prey resources. Via dynamic adjustments of peripheral vasoconstriction and bradycardia, oxygen consumption can be tailored to breath-hold duration, depth, exercise, and even expectations during dives. By investigating the heart rate of a trained harbor porpoise during a two-alternative forced choice task, where the animal is either acoustically masked or blindfolded, we test the hypothesis that sensory deprivation will lead to a stronger dive response to conserve oxygen when facing a more uncertain and smaller sensory umwelt. We show that the porpoise halves its diving heart rate (from 55 to 25 bpm) when blindfolded but presents no change in heart rate during masking of its echolocation. Therefore, visual stimuli may matter more to echolocating toothed whales than previously assumed, and sensory deprivation can be a major driver of the dive response, possibly as an anti-predator measure. Elsevier 2023-02-14 /pmc/articles/PMC9982314/ /pubmed/36876128 http://dx.doi.org/10.1016/j.isci.2023.106204 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Bakkeren, Ciska
Ladegaard, Michael
Hansen, Kirstin Anderson
Wahlberg, Magnus
Madsen, Peter Teglberg
Rojano-Doñate, Laia
Visual deprivation induces a stronger dive response in a harbor porpoise
title Visual deprivation induces a stronger dive response in a harbor porpoise
title_full Visual deprivation induces a stronger dive response in a harbor porpoise
title_fullStr Visual deprivation induces a stronger dive response in a harbor porpoise
title_full_unstemmed Visual deprivation induces a stronger dive response in a harbor porpoise
title_short Visual deprivation induces a stronger dive response in a harbor porpoise
title_sort visual deprivation induces a stronger dive response in a harbor porpoise
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9982314/
https://www.ncbi.nlm.nih.gov/pubmed/36876128
http://dx.doi.org/10.1016/j.isci.2023.106204
work_keys_str_mv AT bakkerenciska visualdeprivationinducesastrongerdiveresponseinaharborporpoise
AT ladegaardmichael visualdeprivationinducesastrongerdiveresponseinaharborporpoise
AT hansenkirstinanderson visualdeprivationinducesastrongerdiveresponseinaharborporpoise
AT wahlbergmagnus visualdeprivationinducesastrongerdiveresponseinaharborporpoise
AT madsenpeterteglberg visualdeprivationinducesastrongerdiveresponseinaharborporpoise
AT rojanodonatelaia visualdeprivationinducesastrongerdiveresponseinaharborporpoise