Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic
Killer whales (Orcinus orca) produce a variety of acoustic signal types used for communication: clicks, whistles, and pulsed calls. Discrete pulsed calls are highly stereotyped, repetitive, and unique to individual pods found around the world. Discriminating amongst pod specific calls can help deter...
Published in: | ARCTIC |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
The Arctic Institute of North America
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.14430/arctic75350 https://journalhosting.ucalgary.ca/index.php/arctic/article/download/75350/55867 https://journalhosting.ucalgary.ca/index.php/arctic/article/download/75350/55866 |
id |
crarcticinstna:10.14430/arctic75350 |
---|---|
record_format |
openpolar |
spelling |
crarcticinstna:10.14430/arctic75350 2024-06-09T07:41:23+00:00 Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic Sportelli, Jessica J. Jones, Joshua M. Frasier, Kaitlin E. Westdal, Kristin H. Higdon, Jeff W. Hildebrand, John A. 2022 http://dx.doi.org/10.14430/arctic75350 https://journalhosting.ucalgary.ca/index.php/arctic/article/download/75350/55867 https://journalhosting.ucalgary.ca/index.php/arctic/article/download/75350/55866 unknown The Arctic Institute of North America http://creativecommons.org/licenses/by/4.0/ ARCTIC ISSN 1923-1245 0004-0843 journal-article 2022 crarcticinstna https://doi.org/10.14430/arctic75350 2024-05-14T12:53:43Z Killer whales (Orcinus orca) produce a variety of acoustic signal types used for communication: clicks, whistles, and pulsed calls. Discrete pulsed calls are highly stereotyped, repetitive, and unique to individual pods found around the world. Discriminating amongst pod specific calls can help determine population structure in killer whales and is used to track pod movements around oceans. Killer whale presence in the Canadian Arctic has increased substantially, but we have limited understanding of their ecology, movements, and stock identity. Two autonomous passive acoustic monitoring (PAM) hydrophones were deployed in the waters of Eclipse Sound and Milne Inlet, in northern Baffin Island, Nunavut, Canada, in August and September 2017. Eleven killer whale pulsed call types, three multiphonic and eight monophonic, are proposed and described using manual whistle contour extraction and feature normalization. Automated detection of echolocation clicks between 20 and 48 kHz demonstrated little to no overlap between killer whale calls and echolocation presumed to be narwhal, which suggests that narwhal remain audibly inconspicuous when killer whales are present. Describing the acoustic repertoire of killer whales seasonally present in the Canadian Arctic will aid in understanding their acoustic behaviour, seasonal movements, and ecological impacts. The calls described here provide a basis for future acoustic comparisons across the North Atlantic and aid in characterizing killer whale demographics and ecology, particularly for pods making seasonal incursions into Arctic waters. Article in Journal/Newspaper Arctic Arctic Baffin Island Baffin Eclipse Sound Killer Whale narwhal* North Atlantic Nunavut Orca Orcinus orca Killer whale Arctic Institute of North America Arctic Baffin Island Canada Eclipse Sound ENVELOPE(-78.998,-78.998,72.635,72.635) Milne Inlet ENVELOPE(-80.499,-80.499,72.335,72.335) Nunavut ARCTIC 75 3 392 |
institution |
Open Polar |
collection |
Arctic Institute of North America |
op_collection_id |
crarcticinstna |
language |
unknown |
description |
Killer whales (Orcinus orca) produce a variety of acoustic signal types used for communication: clicks, whistles, and pulsed calls. Discrete pulsed calls are highly stereotyped, repetitive, and unique to individual pods found around the world. Discriminating amongst pod specific calls can help determine population structure in killer whales and is used to track pod movements around oceans. Killer whale presence in the Canadian Arctic has increased substantially, but we have limited understanding of their ecology, movements, and stock identity. Two autonomous passive acoustic monitoring (PAM) hydrophones were deployed in the waters of Eclipse Sound and Milne Inlet, in northern Baffin Island, Nunavut, Canada, in August and September 2017. Eleven killer whale pulsed call types, three multiphonic and eight monophonic, are proposed and described using manual whistle contour extraction and feature normalization. Automated detection of echolocation clicks between 20 and 48 kHz demonstrated little to no overlap between killer whale calls and echolocation presumed to be narwhal, which suggests that narwhal remain audibly inconspicuous when killer whales are present. Describing the acoustic repertoire of killer whales seasonally present in the Canadian Arctic will aid in understanding their acoustic behaviour, seasonal movements, and ecological impacts. The calls described here provide a basis for future acoustic comparisons across the North Atlantic and aid in characterizing killer whale demographics and ecology, particularly for pods making seasonal incursions into Arctic waters. |
format |
Article in Journal/Newspaper |
author |
Sportelli, Jessica J. Jones, Joshua M. Frasier, Kaitlin E. Westdal, Kristin H. Higdon, Jeff W. Hildebrand, John A. |
spellingShingle |
Sportelli, Jessica J. Jones, Joshua M. Frasier, Kaitlin E. Westdal, Kristin H. Higdon, Jeff W. Hildebrand, John A. Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic |
author_facet |
Sportelli, Jessica J. Jones, Joshua M. Frasier, Kaitlin E. Westdal, Kristin H. Higdon, Jeff W. Hildebrand, John A. |
author_sort |
Sportelli, Jessica J. |
title |
Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic |
title_short |
Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic |
title_full |
Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic |
title_fullStr |
Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic |
title_full_unstemmed |
Killer Whale (Orcinus orca) Pulsed Calls in the Eastern Canadian Arctic |
title_sort |
killer whale (orcinus orca) pulsed calls in the eastern canadian arctic |
publisher |
The Arctic Institute of North America |
publishDate |
2022 |
url |
http://dx.doi.org/10.14430/arctic75350 https://journalhosting.ucalgary.ca/index.php/arctic/article/download/75350/55867 https://journalhosting.ucalgary.ca/index.php/arctic/article/download/75350/55866 |
long_lat |
ENVELOPE(-78.998,-78.998,72.635,72.635) ENVELOPE(-80.499,-80.499,72.335,72.335) |
geographic |
Arctic Baffin Island Canada Eclipse Sound Milne Inlet Nunavut |
geographic_facet |
Arctic Baffin Island Canada Eclipse Sound Milne Inlet Nunavut |
genre |
Arctic Arctic Baffin Island Baffin Eclipse Sound Killer Whale narwhal* North Atlantic Nunavut Orca Orcinus orca Killer whale |
genre_facet |
Arctic Arctic Baffin Island Baffin Eclipse Sound Killer Whale narwhal* North Atlantic Nunavut Orca Orcinus orca Killer whale |
op_source |
ARCTIC ISSN 1923-1245 0004-0843 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.14430/arctic75350 |
container_title |
ARCTIC |
container_volume |
75 |
container_issue |
3 |
container_start_page |
392 |
_version_ |
1801369906339381248 |