Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic waters
This study presents evidence of diel patterns in fin whale (Balaenoptera physalus) 20 Hz acoustic presence in Eastern Antarctic waters. Passive acoustic recordings were collected at four sites in Eastern Antarctica from 2013 to 2019. A generalized linear model fitted by a generalized estimating equa...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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The Royal Society
2023-04-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.220499 |
| _version_ | 1827964565741109248 |
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| author | Meghan G. Aulich Brian S. Miller Flore Samaran Robert D. McCauley Benjamin J. Saunders Christine Erbe |
| author_facet | Meghan G. Aulich Brian S. Miller Flore Samaran Robert D. McCauley Benjamin J. Saunders Christine Erbe |
| author_sort | Meghan G. Aulich |
| collection | DOAJ |
| description | This study presents evidence of diel patterns in fin whale (Balaenoptera physalus) 20 Hz acoustic presence in Eastern Antarctic waters. Passive acoustic recordings were collected at four sites in Eastern Antarctica from 2013 to 2019. A generalized linear model fitted by a generalized estimating equation was used to test the hypothesis that fin whale 20 Hz acoustic presence shows significant variation between light regimes dawn, day, dusk and night. In the Indian sector of Antarctica, at the Prydz and Southern Kerguelen Plateau sites, fin whale acoustic presence was significantly more common during the night and dawn before declining during the day and dusk periods. A different diel pattern was observed in the Pacific sector, at the Dumont d'Urville site: fin whale acoustic presence was significantly more common during the day than dusk and night periods. No diel pattern was identified at the Casey site. The identified diel patterns in the Indian sector of Eastern Antarctica correlate with previously identified diel patterns of the fin whales' prey. We suggest an indirect association between fin whale acoustic presence and foraging, with the animals more likely to produce the 20 Hz pulse during the night when not foraging and less likely to vocalize when foraging during the day. |
| first_indexed | 2024-04-09T17:18:31Z |
| format | Article |
| id | doaj.art-923a0b440b044143906de4d8c25eec03 |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-04-09T17:18:31Z |
| publishDate | 2023-04-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-923a0b440b044143906de4d8c25eec032023-04-19T07:05:37ZengThe Royal SocietyRoyal Society Open Science2054-57032023-04-0110410.1098/rsos.220499Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic watersMeghan G. Aulich0Brian S. Miller1Flore Samaran2Robert D. McCauley3Benjamin J. Saunders4Christine Erbe5Centre for Marine Science and Technology, Curtin University, Bentley, WA 6102, AustraliaAustralian Antarctic Division, 203 Channel Highway, Kingston, TAS 7050, AustraliaLab-STICC CNRS UMR 6285, ENSTA Bretagne, Brest 29802, FranceCentre for Marine Science and Technology, Curtin University, Bentley, WA 6102, AustraliaSchool of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, AustraliaCentre for Marine Science and Technology, Curtin University, Bentley, WA 6102, AustraliaThis study presents evidence of diel patterns in fin whale (Balaenoptera physalus) 20 Hz acoustic presence in Eastern Antarctic waters. Passive acoustic recordings were collected at four sites in Eastern Antarctica from 2013 to 2019. A generalized linear model fitted by a generalized estimating equation was used to test the hypothesis that fin whale 20 Hz acoustic presence shows significant variation between light regimes dawn, day, dusk and night. In the Indian sector of Antarctica, at the Prydz and Southern Kerguelen Plateau sites, fin whale acoustic presence was significantly more common during the night and dawn before declining during the day and dusk periods. A different diel pattern was observed in the Pacific sector, at the Dumont d'Urville site: fin whale acoustic presence was significantly more common during the day than dusk and night periods. No diel pattern was identified at the Casey site. The identified diel patterns in the Indian sector of Eastern Antarctica correlate with previously identified diel patterns of the fin whales' prey. We suggest an indirect association between fin whale acoustic presence and foraging, with the animals more likely to produce the 20 Hz pulse during the night when not foraging and less likely to vocalize when foraging during the day.https://royalsocietypublishing.org/doi/10.1098/rsos.220499fin whaleBalaenoptera physalusEastern Antarcticadiel patterns20 Hz pulse |
| spellingShingle | Meghan G. Aulich Brian S. Miller Flore Samaran Robert D. McCauley Benjamin J. Saunders Christine Erbe Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic waters Royal Society Open Science fin whale Balaenoptera physalus Eastern Antarctica diel patterns 20 Hz pulse |
| title | Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic waters |
| title_full | Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic waters |
| title_fullStr | Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic waters |
| title_full_unstemmed | Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic waters |
| title_short | Diel patterns of fin whale 20 Hz acoustic presence in Eastern Antarctic waters |
| title_sort | diel patterns of fin whale 20 hz acoustic presence in eastern antarctic waters |
| topic | fin whale Balaenoptera physalus Eastern Antarctica diel patterns 20 Hz pulse |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.220499 |
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