Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean
The sei whale ( Balaenoptera borealis ) is one of the least known whale species. Information on sei whale distributions and its regional variability in the south-eastern Pacific Ocean are even more scarce than that from other areas. Vocalizations of sei whales from this region are not described yet....
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ftdoajarticles:oai:doaj.org/article:91183f768a254acfadc0819fef9a5794 2023-05-15T15:36:14+02:00 Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean S. Español-Jiménez P. A. Bahamonde G. Chiang V. Häussermann 2019-01-01T00:00:00Z https://doi.org/10.5194/os-15-75-2019 https://doaj.org/article/91183f768a254acfadc0819fef9a5794 EN eng Copernicus Publications https://www.ocean-sci.net/15/75/2019/os-15-75-2019.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-15-75-2019 1812-0784 1812-0792 https://doaj.org/article/91183f768a254acfadc0819fef9a5794 Ocean Science, Vol 15, Pp 75-82 (2019) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2019 ftdoajarticles https://doi.org/10.5194/os-15-75-2019 2022-12-31T00:23:19Z The sei whale ( Balaenoptera borealis ) is one of the least known whale species. Information on sei whale distributions and its regional variability in the south-eastern Pacific Ocean are even more scarce than that from other areas. Vocalizations of sei whales from this region are not described yet. This research presents the first characterization of sei whale sounds recorded in Chile during the austral autumn of 2016 and 2017. Recordings were done opportunistically. A total of 41 calls were identified to be sei whale downsweeps. In 2016, calls ranged from an average maximum frequency of 105.3 Hz down to an average minimum of 35.6 Hz over 1.6 s with a peak frequency of 65.4 Hz. During 2017, calls ranged from an average maximum frequency of 93.3 down to 42.2 Hz (over 1.6 s) with a peak frequency of 68.3 Hz. The absolute minimum frequency recorded was 30 Hz and the absolute maximum frequency was 129.4 Hz. Calls generally occurred in pairs, but triplets or singles were also registered. These low-frequency sounds share characteristics with recordings of sei whales near the Hawai'ian Islands but with differences in the maximum frequencies and duration. These calls distinctly differ from sounds previously described for sei whales in the Southern Ocean and are the first documented sei whale calls in the south-eastern Pacific. Article in Journal/Newspaper Balaenoptera borealis Sei Whale Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean Austral Patagonia Pacific Triplets ENVELOPE(-59.750,-59.750,-62.383,-62.383) Ocean Science 15 1 75 82 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 S. Español-Jiménez P. A. Bahamonde G. Chiang V. Häussermann Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
The sei whale ( Balaenoptera borealis ) is one of the least known whale species. Information on sei whale distributions and its regional variability in the south-eastern Pacific Ocean are even more scarce than that from other areas. Vocalizations of sei whales from this region are not described yet. This research presents the first characterization of sei whale sounds recorded in Chile during the austral autumn of 2016 and 2017. Recordings were done opportunistically. A total of 41 calls were identified to be sei whale downsweeps. In 2016, calls ranged from an average maximum frequency of 105.3 Hz down to an average minimum of 35.6 Hz over 1.6 s with a peak frequency of 65.4 Hz. During 2017, calls ranged from an average maximum frequency of 93.3 down to 42.2 Hz (over 1.6 s) with a peak frequency of 68.3 Hz. The absolute minimum frequency recorded was 30 Hz and the absolute maximum frequency was 129.4 Hz. Calls generally occurred in pairs, but triplets or singles were also registered. These low-frequency sounds share characteristics with recordings of sei whales near the Hawai'ian Islands but with differences in the maximum frequencies and duration. These calls distinctly differ from sounds previously described for sei whales in the Southern Ocean and are the first documented sei whale calls in the south-eastern Pacific. |
format |
Article in Journal/Newspaper |
author |
S. Español-Jiménez P. A. Bahamonde G. Chiang V. Häussermann |
author_facet |
S. Español-Jiménez P. A. Bahamonde G. Chiang V. Häussermann |
author_sort |
S. Español-Jiménez |
title |
Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean |
title_short |
Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean |
title_full |
Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean |
title_fullStr |
Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean |
title_full_unstemmed |
Discovering sounds in Patagonia: characterizing sei whale ( Balaenoptera borealis ) downsweeps in the south-eastern Pacific Ocean |
title_sort |
discovering sounds in patagonia: characterizing sei whale ( balaenoptera borealis ) downsweeps in the south-eastern pacific ocean |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/os-15-75-2019 https://doaj.org/article/91183f768a254acfadc0819fef9a5794 |
long_lat |
ENVELOPE(-59.750,-59.750,-62.383,-62.383) |
geographic |
Southern Ocean Austral Patagonia Pacific Triplets |
geographic_facet |
Southern Ocean Austral Patagonia Pacific Triplets |
genre |
Balaenoptera borealis Sei Whale Southern Ocean |
genre_facet |
Balaenoptera borealis Sei Whale Southern Ocean |
op_source |
Ocean Science, Vol 15, Pp 75-82 (2019) |
op_relation |
https://www.ocean-sci.net/15/75/2019/os-15-75-2019.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-15-75-2019 1812-0784 1812-0792 https://doaj.org/article/91183f768a254acfadc0819fef9a5794 |
op_doi |
https://doi.org/10.5194/os-15-75-2019 |
container_title |
Ocean Science |
container_volume |
15 |
container_issue |
1 |
container_start_page |
75 |
op_container_end_page |
82 |
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1766366578501222400 |