Cargando…
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...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7483526/ https://www.ncbi.nlm.nih.gov/pubmed/32913327 http://dx.doi.org/10.1038/s41598-020-71957-0 |
_version_ | 1783580935793410048 |
---|---|
author | Osiecka, Anna N. Jones, Owen Wahlberg, Magnus |
author_facet | Osiecka, Anna N. Jones, Owen Wahlberg, Magnus |
author_sort | Osiecka, Anna N. |
collection | PubMed |
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 | Online Article Text |
id | pubmed-7483526 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-74835262020-09-15 The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity Osiecka, Anna N. Jones, Owen Wahlberg, Magnus Sci Rep Article 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. Nature Publishing Group UK 2020-09-10 /pmc/articles/PMC7483526/ /pubmed/32913327 http://dx.doi.org/10.1038/s41598-020-71957-0 Text en © 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/. |
spellingShingle | Article Osiecka, Anna N. Jones, Owen Wahlberg, Magnus The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
title | 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_short | 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 |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7483526/ https://www.ncbi.nlm.nih.gov/pubmed/32913327 http://dx.doi.org/10.1038/s41598-020-71957-0 |
work_keys_str_mv | AT osieckaannan thedielpatterninharbourporpoiseclickingbehaviourisnotaresponsetopreyactivity AT jonesowen thedielpatterninharbourporpoiseclickingbehaviourisnotaresponsetopreyactivity AT wahlbergmagnus thedielpatterninharbourporpoiseclickingbehaviourisnotaresponsetopreyactivity AT osieckaannan dielpatterninharbourporpoiseclickingbehaviourisnotaresponsetopreyactivity AT jonesowen dielpatterninharbourporpoiseclickingbehaviourisnotaresponsetopreyactivity AT wahlbergmagnus dielpatterninharbourporpoiseclickingbehaviourisnotaresponsetopreyactivity |