Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population
Blue whales were brought to the edge of extinction by commercial whaling in the twentieth century and their recovery rate in the Southern Hemisphere has been slow; they remain endangered. Blue whales, although the largest animals on Earth, are difficult to study in the Southern Hemisphere, thus thei...
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fttriple:oai:gotriple.eu:10670/1.gaylzh 2023-05-15T15:45:08+02:00 Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population Leroy, Emmanuelle Royer, Jean-yves Alling, Abigail Maslen, Ben Rogers, Tracey L. https://doi.org/10.1038/s41598-021-88062-5 https://archimer.ifremer.fr/doc/00691/80280/83365.pdf https://archimer.ifremer.fr/doc/00691/80280/ en eng Springer Science and Business Media LLC doi:10.1038/s41598-021-88062-5 10670/1.gaylzh https://archimer.ifremer.fr/doc/00691/80280/83365.pdf https://archimer.ifremer.fr/doc/00691/80280/ other Archimer, archive institutionnelle de l'Ifremer Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2021-04 , Vol. 11 , N. 1 , P. 8762 (21p.) musiq psy Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1038/s41598-021-88062-5 2023-01-22T17:57:41Z Blue whales were brought to the edge of extinction by commercial whaling in the twentieth century and their recovery rate in the Southern Hemisphere has been slow; they remain endangered. Blue whales, although the largest animals on Earth, are difficult to study in the Southern Hemisphere, thus their population structure, distribution and migration remain poorly known. Fortunately, blue whales produce powerful and stereotyped songs, which prove an effective clue for monitoring their different ‘acoustic populations.’ The DGD-Chagos song has been previously reported in the central Indian Ocean. A comparison of this song with the pygmy blue and Omura’s whale songs shows that the Chagos song are likely produced by a distinct previously unknown pygmy blue whale population. These songs are a large part of the underwater soundscape in the tropical Indian Ocean and have been so for nearly two decades. Seasonal differences in song detections among our six recording sites suggest that the Chagos whales migrate from the eastern to western central Indian Ocean, around the Chagos Archipelago, then further east, up to the north of Western Australia, and possibly further north, as far as Sri Lanka. The Indian Ocean holds a greater diversity of blue whale populations than thought previously. Text Blue whale Unknown Indian Scientific Reports 11 1 |
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musiq psy Leroy, Emmanuelle Royer, Jean-yves Alling, Abigail Maslen, Ben Rogers, Tracey L. Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population |
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musiq psy |
description |
Blue whales were brought to the edge of extinction by commercial whaling in the twentieth century and their recovery rate in the Southern Hemisphere has been slow; they remain endangered. Blue whales, although the largest animals on Earth, are difficult to study in the Southern Hemisphere, thus their population structure, distribution and migration remain poorly known. Fortunately, blue whales produce powerful and stereotyped songs, which prove an effective clue for monitoring their different ‘acoustic populations.’ The DGD-Chagos song has been previously reported in the central Indian Ocean. A comparison of this song with the pygmy blue and Omura’s whale songs shows that the Chagos song are likely produced by a distinct previously unknown pygmy blue whale population. These songs are a large part of the underwater soundscape in the tropical Indian Ocean and have been so for nearly two decades. Seasonal differences in song detections among our six recording sites suggest that the Chagos whales migrate from the eastern to western central Indian Ocean, around the Chagos Archipelago, then further east, up to the north of Western Australia, and possibly further north, as far as Sri Lanka. The Indian Ocean holds a greater diversity of blue whale populations than thought previously. |
format |
Text |
author |
Leroy, Emmanuelle Royer, Jean-yves Alling, Abigail Maslen, Ben Rogers, Tracey L. |
author_facet |
Leroy, Emmanuelle Royer, Jean-yves Alling, Abigail Maslen, Ben Rogers, Tracey L. |
author_sort |
Leroy, Emmanuelle |
title |
Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population |
title_short |
Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population |
title_full |
Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population |
title_fullStr |
Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population |
title_full_unstemmed |
Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population |
title_sort |
multiple pygmy blue whale acoustic populations in the indian ocean: whale song identifies a possible new population |
publisher |
Springer Science and Business Media LLC |
url |
https://doi.org/10.1038/s41598-021-88062-5 https://archimer.ifremer.fr/doc/00691/80280/83365.pdf https://archimer.ifremer.fr/doc/00691/80280/ |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Blue whale |
genre_facet |
Blue whale |
op_source |
Archimer, archive institutionnelle de l'Ifremer Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2021-04 , Vol. 11 , N. 1 , P. 8762 (21p.) |
op_relation |
doi:10.1038/s41598-021-88062-5 10670/1.gaylzh https://archimer.ifremer.fr/doc/00691/80280/83365.pdf https://archimer.ifremer.fr/doc/00691/80280/ |
op_rights |
other |
op_doi |
https://doi.org/10.1038/s41598-021-88062-5 |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
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1766379486932107264 |