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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2020
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Online Access: | https://portal.findresearcher.sdu.dk/da/publications/a4078c86-db02-4347-8734-5f27d364cbec https://doi.org/10.1038/s41598-020-71957-0 https://findresearcher.sdu.dk/ws/files/173608088/s41598_020_71957_0.pdf |
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ftsydanskunivpub:oai:sdu.dk:publications/a4078c86-db02-4347-8734-5f27d364cbec 2024-05-19T07:41:37+00:00 The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity Osiecka, Anna N. Jones, Owen Wahlberg, Magnus 2020 application/pdf https://portal.findresearcher.sdu.dk/da/publications/a4078c86-db02-4347-8734-5f27d364cbec https://doi.org/10.1038/s41598-020-71957-0 https://findresearcher.sdu.dk/ws/files/173608088/s41598_020_71957_0.pdf eng eng https://portal.findresearcher.sdu.dk/da/publications/a4078c86-db02-4347-8734-5f27d364cbec info:eu-repo/semantics/openAccess Osiecka , A N , Jones , O & Wahlberg , M 2020 , ' The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity ' , Scientific Reports , vol. 10 , no. 1 , 14876 . https://doi.org/10.1038/s41598-020-71957-0 article 2020 ftsydanskunivpub https://doi.org/10.1038/s41598-020-71957-0 2024-04-24T00:42:05Z 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. Article in Journal/Newspaper Harbour porpoise Phocoena phocoena University of Southern Denmark Research Portal Scientific Reports 10 1 |
institution |
Open Polar |
collection |
University of Southern Denmark Research Portal |
op_collection_id |
ftsydanskunivpub |
language |
English |
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 |
Article in Journal/Newspaper |
author |
Osiecka, Anna N. Jones, Owen Wahlberg, Magnus |
spellingShingle |
Osiecka, Anna N. Jones, Owen Wahlberg, Magnus The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity |
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 |
publishDate |
2020 |
url |
https://portal.findresearcher.sdu.dk/da/publications/a4078c86-db02-4347-8734-5f27d364cbec https://doi.org/10.1038/s41598-020-71957-0 https://findresearcher.sdu.dk/ws/files/173608088/s41598_020_71957_0.pdf |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
Osiecka , A N , Jones , O & Wahlberg , M 2020 , ' The diel pattern in harbour porpoise clicking behaviour is not a response to prey activity ' , Scientific Reports , vol. 10 , no. 1 , 14876 . https://doi.org/10.1038/s41598-020-71957-0 |
op_relation |
https://portal.findresearcher.sdu.dk/da/publications/a4078c86-db02-4347-8734-5f27d364cbec |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-020-71957-0 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
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1799481232029908992 |