Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome
Background Migration enables organisms to access resources in separate regions that have predictable but asynchronous spatiotemporal variability in habitat quality. The classical migration syndrome is defined by key traits including directionally persistent long-distance movements during which maint...
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/37779 2024-02-04T09:59:14+01:00 Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome Storrie, Luke Loseto, Lisa Sutherland, Emma L. MacPhee, Shannon A. O’Corry-Crowe, Greg Hussey, Nigel E. 2023-11-03T09:18:36Z application/pdf http://hdl.handle.net/1993/37779 https://doi.org/10.1186/s40462-023-00416-y eng en eng BMC Movement Ecology. 2023 Aug 30;11(1):53 doi:10.1186/s40462-023-00416-y http://hdl.handle.net/1993/37779 open access BioMed Central Ltd., part of Springer Nature Migration Nomadism Telemetry Cetaceans Beluga whale Foraging Journal Article 2023 ftunivmanitoba https://doi.org/10.1186/s40462-023-00416-y 2024-01-07T18:38:57Z Background Migration enables organisms to access resources in separate regions that have predictable but asynchronous spatiotemporal variability in habitat quality. The classical migration syndrome is defined by key traits including directionally persistent long-distance movements during which maintenance activities are suppressed. But recently, seasonal round-trip movements have frequently been considered to constitute migration irrespective of the traits required to meet this movement type, conflating common outcomes with common traits required for a mechanistic understanding of long-distance movements. We aimed to test whether a cetacean ceases foraging during so-called migratory movements, conforming to a trait that defines classical migration. Methods We used location and dive data collected by satellite tags deployed on beluga whales (Delphinapterus leucas) from the Eastern Beaufort Sea population, which undertake long-distance directed movements between summer and winter areas. To identify phases of directionally persistent travel, behavioural states (area-restricted search, ARS; or Transit) were decoded using a hidden-Markov model, based on step length and turning angle. Established dive profiles were then used as a proxy for foraging, to test the hypothesis that belugas cease foraging during these long-distance transiting movements, i.e., they suppress maintenance activities. Results Belugas principally made directed horizontal movements when moving between summer and winter residency areas, remaining in a Transit state for an average of 75.4% (range = 58.5–87.2%) of the time. All individuals, however, exhibited persistent foraging during Transit movements (75.8% of hours decoded as the Transit state had ≥ 1 foraging dive). These data indicate that belugas actively search for and/or respond to resources during these long-distance movements that are typically called a migration. Conclusions The long-distance movements of belugas do not conform to the traits defining the classical migration syndrome, but ... Article in Journal/Newspaper Beaufort Sea Beluga Beluga whale Beluga* Delphinapterus leucas MSpace at the University of Manitoba Movement Ecology 11 1 |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Migration Nomadism Telemetry Cetaceans Beluga whale Foraging |
spellingShingle |
Migration Nomadism Telemetry Cetaceans Beluga whale Foraging Storrie, Luke Loseto, Lisa Sutherland, Emma L. MacPhee, Shannon A. O’Corry-Crowe, Greg Hussey, Nigel E. Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome |
topic_facet |
Migration Nomadism Telemetry Cetaceans Beluga whale Foraging |
description |
Background Migration enables organisms to access resources in separate regions that have predictable but asynchronous spatiotemporal variability in habitat quality. The classical migration syndrome is defined by key traits including directionally persistent long-distance movements during which maintenance activities are suppressed. But recently, seasonal round-trip movements have frequently been considered to constitute migration irrespective of the traits required to meet this movement type, conflating common outcomes with common traits required for a mechanistic understanding of long-distance movements. We aimed to test whether a cetacean ceases foraging during so-called migratory movements, conforming to a trait that defines classical migration. Methods We used location and dive data collected by satellite tags deployed on beluga whales (Delphinapterus leucas) from the Eastern Beaufort Sea population, which undertake long-distance directed movements between summer and winter areas. To identify phases of directionally persistent travel, behavioural states (area-restricted search, ARS; or Transit) were decoded using a hidden-Markov model, based on step length and turning angle. Established dive profiles were then used as a proxy for foraging, to test the hypothesis that belugas cease foraging during these long-distance transiting movements, i.e., they suppress maintenance activities. Results Belugas principally made directed horizontal movements when moving between summer and winter residency areas, remaining in a Transit state for an average of 75.4% (range = 58.5–87.2%) of the time. All individuals, however, exhibited persistent foraging during Transit movements (75.8% of hours decoded as the Transit state had ≥ 1 foraging dive). These data indicate that belugas actively search for and/or respond to resources during these long-distance movements that are typically called a migration. Conclusions The long-distance movements of belugas do not conform to the traits defining the classical migration syndrome, but ... |
format |
Article in Journal/Newspaper |
author |
Storrie, Luke Loseto, Lisa Sutherland, Emma L. MacPhee, Shannon A. O’Corry-Crowe, Greg Hussey, Nigel E. |
author_facet |
Storrie, Luke Loseto, Lisa Sutherland, Emma L. MacPhee, Shannon A. O’Corry-Crowe, Greg Hussey, Nigel E. |
author_sort |
Storrie, Luke |
title |
Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome |
title_short |
Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome |
title_full |
Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome |
title_fullStr |
Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome |
title_full_unstemmed |
Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome |
title_sort |
do beluga whales truly migrate? testing a key trait of the classical migration syndrome |
publisher |
BMC |
publishDate |
2023 |
url |
http://hdl.handle.net/1993/37779 https://doi.org/10.1186/s40462-023-00416-y |
genre |
Beaufort Sea Beluga Beluga whale Beluga* Delphinapterus leucas |
genre_facet |
Beaufort Sea Beluga Beluga whale Beluga* Delphinapterus leucas |
op_relation |
Movement Ecology. 2023 Aug 30;11(1):53 doi:10.1186/s40462-023-00416-y http://hdl.handle.net/1993/37779 |
op_rights |
open access BioMed Central Ltd., part of Springer Nature |
op_doi |
https://doi.org/10.1186/s40462-023-00416-y |
container_title |
Movement Ecology |
container_volume |
11 |
container_issue |
1 |
_version_ |
1789963914604183552 |