Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring
Cook Inlet, Alaska, is home to an endangered and declining population of 279 belugas (Delphinapterus leucas). Recovery efforts highlight a paucity of basic ecological knowledge, impeding the correct assessment of threats and the development of recovery actions. In particular, information on diet and...
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ftpubmed:oai:pubmedcentral.nih.gov:8631677 2023-05-15T15:41:41+02:00 Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring Castellote, Manuel Mooney, Aran Andrews, Russel Deruiter, Stacy Lee, Wu-Jung Ferguson, Megan Wade, Paul 2021-11-30 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8631677/ http://www.ncbi.nlm.nih.gov/pubmed/34847192 https://doi.org/10.1371/journal.pone.0260485 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8631677/ http://www.ncbi.nlm.nih.gov/pubmed/34847192 http://dx.doi.org/10.1371/journal.pone.0260485 https://creativecommons.org/publicdomain/zero/1.0/This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication. CC0 PDM PLoS One Research Article Text 2021 ftpubmed https://doi.org/10.1371/journal.pone.0260485 2021-12-05T01:59:50Z Cook Inlet, Alaska, is home to an endangered and declining population of 279 belugas (Delphinapterus leucas). Recovery efforts highlight a paucity of basic ecological knowledge, impeding the correct assessment of threats and the development of recovery actions. In particular, information on diet and foraging habitat is very limited for this population. Passive acoustic monitoring has proven to be an efficient approach to monitor beluga distribution and seasonal occurrence. Identifying acoustic foraging behavior could help address the current gap in information on diet and foraging habitat. To address this conservation challenge, eight belugas from a comparative, healthy population in Bristol Bay, Alaska, were instrumented with a multi-sensor tag (DTAG), a satellite tag, and a stomach temperature transmitter in August 2014 and May 2016. DTAG deployments provided 129.6 hours of data including foraging and social behavioral states. A total of 68 echolocation click trains ending in terminal buzzes were identified during successful prey chasing and capture, as well as during social interactions. Of these, 37 click trains were successfully processed to measure inter-click intervals (ICI) and ICI trend in their buzzing section. Terminal buzzes with short ICI (minimum ICI <8.98 ms) and consistently decreasing ICI trend (ICI increment range <1.49 ms) were exclusively associated with feeding behavior. This dual metric was applied to acoustic data from one acoustic mooring within the Cook Inlet beluga critical habitat as an example of the application of detecting feeding in long-term passive acoustic monitoring data. This approach allowed description of the relationship between beluga presence, feeding occurrence, and the timing of spawning runs by different species of anadromous fish. Results reflected a clear preference for the Susitna River delta during eulachon (Thaleichthys pacificus), Chinook (Oncorhynchus tshawytscha), pink (Oncorhynchus gorbuscha), and coho (Oncorhynchus kisutch) salmon spawning run periods, ... Text Beluga Beluga whale Beluga* Delphinapterus leucas Oncorhynchus gorbuscha Alaska PubMed Central (PMC) PLOS ONE 16 11 e0260485 |
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Research Article |
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Research Article Castellote, Manuel Mooney, Aran Andrews, Russel Deruiter, Stacy Lee, Wu-Jung Ferguson, Megan Wade, Paul Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring |
topic_facet |
Research Article |
description |
Cook Inlet, Alaska, is home to an endangered and declining population of 279 belugas (Delphinapterus leucas). Recovery efforts highlight a paucity of basic ecological knowledge, impeding the correct assessment of threats and the development of recovery actions. In particular, information on diet and foraging habitat is very limited for this population. Passive acoustic monitoring has proven to be an efficient approach to monitor beluga distribution and seasonal occurrence. Identifying acoustic foraging behavior could help address the current gap in information on diet and foraging habitat. To address this conservation challenge, eight belugas from a comparative, healthy population in Bristol Bay, Alaska, were instrumented with a multi-sensor tag (DTAG), a satellite tag, and a stomach temperature transmitter in August 2014 and May 2016. DTAG deployments provided 129.6 hours of data including foraging and social behavioral states. A total of 68 echolocation click trains ending in terminal buzzes were identified during successful prey chasing and capture, as well as during social interactions. Of these, 37 click trains were successfully processed to measure inter-click intervals (ICI) and ICI trend in their buzzing section. Terminal buzzes with short ICI (minimum ICI <8.98 ms) and consistently decreasing ICI trend (ICI increment range <1.49 ms) were exclusively associated with feeding behavior. This dual metric was applied to acoustic data from one acoustic mooring within the Cook Inlet beluga critical habitat as an example of the application of detecting feeding in long-term passive acoustic monitoring data. This approach allowed description of the relationship between beluga presence, feeding occurrence, and the timing of spawning runs by different species of anadromous fish. Results reflected a clear preference for the Susitna River delta during eulachon (Thaleichthys pacificus), Chinook (Oncorhynchus tshawytscha), pink (Oncorhynchus gorbuscha), and coho (Oncorhynchus kisutch) salmon spawning run periods, ... |
format |
Text |
author |
Castellote, Manuel Mooney, Aran Andrews, Russel Deruiter, Stacy Lee, Wu-Jung Ferguson, Megan Wade, Paul |
author_facet |
Castellote, Manuel Mooney, Aran Andrews, Russel Deruiter, Stacy Lee, Wu-Jung Ferguson, Megan Wade, Paul |
author_sort |
Castellote, Manuel |
title |
Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring |
title_short |
Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring |
title_full |
Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring |
title_fullStr |
Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring |
title_full_unstemmed |
Beluga whale (Delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring |
title_sort |
beluga whale (delphinapterus leucas) acoustic foraging behavior and applications for long term monitoring |
publisher |
Public Library of Science |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8631677/ http://www.ncbi.nlm.nih.gov/pubmed/34847192 https://doi.org/10.1371/journal.pone.0260485 |
genre |
Beluga Beluga whale Beluga* Delphinapterus leucas Oncorhynchus gorbuscha Alaska |
genre_facet |
Beluga Beluga whale Beluga* Delphinapterus leucas Oncorhynchus gorbuscha Alaska |
op_source |
PLoS One |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8631677/ http://www.ncbi.nlm.nih.gov/pubmed/34847192 http://dx.doi.org/10.1371/journal.pone.0260485 |
op_rights |
https://creativecommons.org/publicdomain/zero/1.0/This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication. |
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https://doi.org/10.1371/journal.pone.0260485 |
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PLOS ONE |
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16 |
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11 |
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