The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity
Wild harbour porpoises (Phocoena phocoena) mainly forage during the night and, because they rely on echolocation to detect their prey, this is also when they are most acoustically active. It has been hypothesised that this activity pattern is a response to the diel behaviour of their major prey spec...
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ftpubmed:oai:pubmedcentral.nih.gov:7483526 2023-05-15T16:33:25+02:00 The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity Osiecka, Anna N. Jones, Owen Wahlberg, Magnus 2020-09-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7483526/ https://doi.org/10.1038/s41598-020-71957-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7483526/ http://dx.doi.org/10.1038/s41598-020-71957-0 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-71957-0 2020-09-20T00:33:26Z Wild harbour porpoises (Phocoena phocoena) mainly forage during the night and, because they rely on echolocation to detect their prey, this is also when they are most acoustically active. It has been hypothesised that this activity pattern is a response to the diel behaviour of their major prey species. To test this hypothesis, we monitored the acoustic activity of two captive harbour porpoises held in a net pen continuously during a full year and fed by their human keepers during daylight hours, thus removing the influence of prey activity. The porpoises were exposed to similar temperature and ambient light conditions as free-ranging animals living in the same region. Throughout the year, there was a pronounced diel pattern in acoustic activity of the porpoises, with significantly greater activity at night, and a clear peak around sunrise and sunset throughout the year. Clicking activity was not dependent on lunar illumination or water level. Because the porpoises in the pen are fed and trained during daylight hours, the results indicate that factors other than fish behaviour are strongly influencing the diel clicking behaviour pattern of the species. Text Harbour porpoise Phocoena phocoena PubMed Central (PMC) Scientific Reports 10 1 |
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Article Osiecka, Anna N. Jones, Owen Wahlberg, Magnus The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
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Article |
description |
Wild harbour porpoises (Phocoena phocoena) mainly forage during the night and, because they rely on echolocation to detect their prey, this is also when they are most acoustically active. It has been hypothesised that this activity pattern is a response to the diel behaviour of their major prey species. To test this hypothesis, we monitored the acoustic activity of two captive harbour porpoises held in a net pen continuously during a full year and fed by their human keepers during daylight hours, thus removing the influence of prey activity. The porpoises were exposed to similar temperature and ambient light conditions as free-ranging animals living in the same region. Throughout the year, there was a pronounced diel pattern in acoustic activity of the porpoises, with significantly greater activity at night, and a clear peak around sunrise and sunset throughout the year. Clicking activity was not dependent on lunar illumination or water level. Because the porpoises in the pen are fed and trained during daylight hours, the results indicate that factors other than fish behaviour are strongly influencing the diel clicking behaviour pattern of the species. |
format |
Text |
author |
Osiecka, Anna N. Jones, Owen Wahlberg, Magnus |
author_facet |
Osiecka, Anna N. Jones, Owen Wahlberg, Magnus |
author_sort |
Osiecka, Anna N. |
title |
The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
title_short |
The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
title_full |
The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
title_fullStr |
The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
title_full_unstemmed |
The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
title_sort |
diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7483526/ https://doi.org/10.1038/s41598-020-71957-0 |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7483526/ http://dx.doi.org/10.1038/s41598-020-71957-0 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
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https://doi.org/10.1038/s41598-020-71957-0 |
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