Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour
We used our novel and programmable Porpoise Alarm (PAL, patd.) to synthesize life-like, electronic harbour porpoise communication signals based on those described for captive animals. In the Little Belt, Denmark, we employed PAL (source level 158 ± 1 dB p–p re 1 μPa@1 m; centroid frequency 133 ± 8.5...
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Online Access: | https://oceanrep.geomar.de/id/eprint/30381/ https://oceanrep.geomar.de/id/eprint/30381/1/09524622.2015.1023848.pdf https://doi.org/10.1080/09524622.2015.1023848 |
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ftoceanrep:oai:oceanrep.geomar.de:30381 2023-05-15T16:33:22+02:00 Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour Culik, Boris von Dorrien, Christian Müller, Vailett Conrad, Matthias 2015-04-09 text https://oceanrep.geomar.de/id/eprint/30381/ https://oceanrep.geomar.de/id/eprint/30381/1/09524622.2015.1023848.pdf https://doi.org/10.1080/09524622.2015.1023848 en eng Taylor & Francis https://oceanrep.geomar.de/id/eprint/30381/1/09524622.2015.1023848.pdf Culik, B., von Dorrien, C., Müller, V. and Conrad, M. (2015) Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour. Bioacoustics, 24 (3). pp. 201-221. DOI 10.1080/09524622.2015.1023848 <https://doi.org/10.1080/09524622.2015.1023848>. doi:10.1080/09524622.2015.1023848 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2015 ftoceanrep https://doi.org/10.1080/09524622.2015.1023848 2023-04-07T15:21:53Z We used our novel and programmable Porpoise Alarm (PAL, patd.) to synthesize life-like, electronic harbour porpoise communication signals based on those described for captive animals. In the Little Belt, Denmark, we employed PAL (source level 158 ± 1 dB p–p re 1 μPa@1 m; centroid frequency 133 ± 8.5 kHz) to synthesize three aggressive click train types termed “A”, “F3” and “M1” to naive, free-living harbour porpoises. Via theodolite tracking (372 h of total visual effort spread over 10 expeditions) we found that, depending on signal type, porpoises either avoid or become attracted to PAL: Signal types “A” and “F3” are slight deterrents, porpoises increasing minimum range (+23 to 32 m, respectively), whereas “M1” attracts porpoises, reducing range (by − 29 m). As determined via archival acoustic detectors (AADs), both signals “F3” and “M1” led the animals to significantly intensify their click rate (by +10% and 68%, respectively) while signal “A” led to a significant reduction ( − 59%). We propose that equipping fishing gear with PAL emitting signal “F3” could potentially reduce porpoise by-catch by increasing (1) awareness through enhanced echolocation and (2) distance to the nets. Detection probability and radius of PAL/AAD tandems could be improved by emitting signal “M1” to focus porpoise echolocation signals on the AAD. The signal may also be useful in luring animals away from hazards, which may be helpful for conservation measures prior to the onset of harmful acoustic activities such as pile-driving, seismic exploration or ammunition clearance. Article in Journal/Newspaper Harbour porpoise Phocoena phocoena OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Bioacoustics 24 3 201 221 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
We used our novel and programmable Porpoise Alarm (PAL, patd.) to synthesize life-like, electronic harbour porpoise communication signals based on those described for captive animals. In the Little Belt, Denmark, we employed PAL (source level 158 ± 1 dB p–p re 1 μPa@1 m; centroid frequency 133 ± 8.5 kHz) to synthesize three aggressive click train types termed “A”, “F3” and “M1” to naive, free-living harbour porpoises. Via theodolite tracking (372 h of total visual effort spread over 10 expeditions) we found that, depending on signal type, porpoises either avoid or become attracted to PAL: Signal types “A” and “F3” are slight deterrents, porpoises increasing minimum range (+23 to 32 m, respectively), whereas “M1” attracts porpoises, reducing range (by − 29 m). As determined via archival acoustic detectors (AADs), both signals “F3” and “M1” led the animals to significantly intensify their click rate (by +10% and 68%, respectively) while signal “A” led to a significant reduction ( − 59%). We propose that equipping fishing gear with PAL emitting signal “F3” could potentially reduce porpoise by-catch by increasing (1) awareness through enhanced echolocation and (2) distance to the nets. Detection probability and radius of PAL/AAD tandems could be improved by emitting signal “M1” to focus porpoise echolocation signals on the AAD. The signal may also be useful in luring animals away from hazards, which may be helpful for conservation measures prior to the onset of harmful acoustic activities such as pile-driving, seismic exploration or ammunition clearance. |
format |
Article in Journal/Newspaper |
author |
Culik, Boris von Dorrien, Christian Müller, Vailett Conrad, Matthias |
spellingShingle |
Culik, Boris von Dorrien, Christian Müller, Vailett Conrad, Matthias Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour |
author_facet |
Culik, Boris von Dorrien, Christian Müller, Vailett Conrad, Matthias |
author_sort |
Culik, Boris |
title |
Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour |
title_short |
Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour |
title_full |
Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour |
title_fullStr |
Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour |
title_full_unstemmed |
Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour |
title_sort |
synthetic communication signals influence wild harbour porpoise (phocoena phocoena) behaviour |
publisher |
Taylor & Francis |
publishDate |
2015 |
url |
https://oceanrep.geomar.de/id/eprint/30381/ https://oceanrep.geomar.de/id/eprint/30381/1/09524622.2015.1023848.pdf https://doi.org/10.1080/09524622.2015.1023848 |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_relation |
https://oceanrep.geomar.de/id/eprint/30381/1/09524622.2015.1023848.pdf Culik, B., von Dorrien, C., Müller, V. and Conrad, M. (2015) Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour. Bioacoustics, 24 (3). pp. 201-221. DOI 10.1080/09524622.2015.1023848 <https://doi.org/10.1080/09524622.2015.1023848>. doi:10.1080/09524622.2015.1023848 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1080/09524622.2015.1023848 |
container_title |
Bioacoustics |
container_volume |
24 |
container_issue |
3 |
container_start_page |
201 |
op_container_end_page |
221 |
_version_ |
1766023059265814528 |