Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation?
Southern right whales (Eubalaena australis) invest substantial amounts of energy in their calves, while facing the risk of having them predated upon by eavesdropping killer whales (Orcinus orca). We tested the hypothesis that southern right whale mother-calf pairs employ acoustic crypsis to reduce a...
Published in: | Journal of Experimental Biology |
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Online Access: | https://pure.au.dk/portal/en/publications/4b0bbb04-833d-4caa-9729-0380a9559884 https://doi.org/10.1242/jeb.190728 https://pure.au.dk/ws/files/195222154/Acoustic_crypsis_in_southern_right_whale_mother_calf_pairs_infrequent_low_output_calls_to_avoid_predation.pdf http://www.scopus.com/inward/record.url?scp=85070457803&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/4b0bbb04-833d-4caa-9729-0380a9559884 2024-05-19T07:38:01+00:00 Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? Nielsen, Mia L.K. Bejder, Lars Videsen, Simone K.A. Christiansen, Fredrik Madsen, Peter T. 2019-07-11 application/pdf https://pure.au.dk/portal/en/publications/4b0bbb04-833d-4caa-9729-0380a9559884 https://doi.org/10.1242/jeb.190728 https://pure.au.dk/ws/files/195222154/Acoustic_crypsis_in_southern_right_whale_mother_calf_pairs_infrequent_low_output_calls_to_avoid_predation.pdf http://www.scopus.com/inward/record.url?scp=85070457803&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/4b0bbb04-833d-4caa-9729-0380a9559884 info:eu-repo/semantics/openAccess Nielsen , M L K , Bejder , L , Videsen , S K A , Christiansen , F & Madsen , P T 2019 , ' Acoustic crypsis in southern right whale mother-calf pairs : infrequent, low-output calls to avoid predation? ' , Journal of Experimental Biology , vol. 222 , no. 13 , jeb190728 . https://doi.org/10.1242/jeb.190728 Acoustic communication Ambient noise Australia Baleen whales Maternal investment article 2019 ftuniaarhuspubl https://doi.org/10.1242/jeb.190728 2024-05-01T23:46:33Z Southern right whales (Eubalaena australis) invest substantial amounts of energy in their calves, while facing the risk of having them predated upon by eavesdropping killer whales (Orcinus orca). We tested the hypothesis that southern right whale mother-calf pairs employ acoustic crypsis to reduce acoustic detectability by such predators. Specifically, we deployed multi-sensor DTAGs on nine lactating whales for a total of 62.9 h in a Western Australian breeding ground, and used a SoundTrap to estimate the concomitant acoustic background noise. Vocalisations were recorded at low rates of <10 calls h-1 (1 call per dive) and at low received levels between 123±8 and 134±10 dB re. 1 µPa RMS depending on call type. We conclude that such acoustic crypsis in southern right whales and other baleen whales decreases the risk of alerting potential predators and hence jeopardizing a substantial energetic investment by the mother. Article in Journal/Newspaper baleen whales Orca Orcinus orca Southern Right Whale Aarhus University: Research Journal of Experimental Biology 222 13 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Acoustic communication Ambient noise Australia Baleen whales Maternal investment |
spellingShingle |
Acoustic communication Ambient noise Australia Baleen whales Maternal investment Nielsen, Mia L.K. Bejder, Lars Videsen, Simone K.A. Christiansen, Fredrik Madsen, Peter T. Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? |
topic_facet |
Acoustic communication Ambient noise Australia Baleen whales Maternal investment |
description |
Southern right whales (Eubalaena australis) invest substantial amounts of energy in their calves, while facing the risk of having them predated upon by eavesdropping killer whales (Orcinus orca). We tested the hypothesis that southern right whale mother-calf pairs employ acoustic crypsis to reduce acoustic detectability by such predators. Specifically, we deployed multi-sensor DTAGs on nine lactating whales for a total of 62.9 h in a Western Australian breeding ground, and used a SoundTrap to estimate the concomitant acoustic background noise. Vocalisations were recorded at low rates of <10 calls h-1 (1 call per dive) and at low received levels between 123±8 and 134±10 dB re. 1 µPa RMS depending on call type. We conclude that such acoustic crypsis in southern right whales and other baleen whales decreases the risk of alerting potential predators and hence jeopardizing a substantial energetic investment by the mother. |
format |
Article in Journal/Newspaper |
author |
Nielsen, Mia L.K. Bejder, Lars Videsen, Simone K.A. Christiansen, Fredrik Madsen, Peter T. |
author_facet |
Nielsen, Mia L.K. Bejder, Lars Videsen, Simone K.A. Christiansen, Fredrik Madsen, Peter T. |
author_sort |
Nielsen, Mia L.K. |
title |
Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? |
title_short |
Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? |
title_full |
Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? |
title_fullStr |
Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? |
title_full_unstemmed |
Acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? |
title_sort |
acoustic crypsis in southern right whale mother-calf pairs:infrequent, low-output calls to avoid predation? |
publishDate |
2019 |
url |
https://pure.au.dk/portal/en/publications/4b0bbb04-833d-4caa-9729-0380a9559884 https://doi.org/10.1242/jeb.190728 https://pure.au.dk/ws/files/195222154/Acoustic_crypsis_in_southern_right_whale_mother_calf_pairs_infrequent_low_output_calls_to_avoid_predation.pdf http://www.scopus.com/inward/record.url?scp=85070457803&partnerID=8YFLogxK |
genre |
baleen whales Orca Orcinus orca Southern Right Whale |
genre_facet |
baleen whales Orca Orcinus orca Southern Right Whale |
op_source |
Nielsen , M L K , Bejder , L , Videsen , S K A , Christiansen , F & Madsen , P T 2019 , ' Acoustic crypsis in southern right whale mother-calf pairs : infrequent, low-output calls to avoid predation? ' , Journal of Experimental Biology , vol. 222 , no. 13 , jeb190728 . https://doi.org/10.1242/jeb.190728 |
op_relation |
https://pure.au.dk/portal/en/publications/4b0bbb04-833d-4caa-9729-0380a9559884 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1242/jeb.190728 |
container_title |
Journal of Experimental Biology |
container_volume |
222 |
container_issue |
13 |
_version_ |
1799477415843463168 |