Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization?
Optimal migration theory prescribes adaptive strategies of energy, time or mortality minimization. To test alternative hypotheses of energy- and time-minimization migration we used multisensory data loggers that record time-resolved flight activity and light for positioning by geolocation in a long-...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
---|---|
Main Authors: | , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
The Royal Society
2024
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1098/rspb.2024.0624 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2024.0624 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2024.0624 |
id |
crroyalsociety:10.1098/rspb.2024.0624 |
---|---|
record_format |
openpolar |
spelling |
crroyalsociety:10.1098/rspb.2024.0624 2024-09-09T20:05:17+00:00 Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? Hedenström, Anders Hedh, Linus Swedish Research Council 2024 http://dx.doi.org/10.1098/rspb.2024.0624 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2024.0624 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2024.0624 en eng The Royal Society http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ Proceedings of the Royal Society B: Biological Sciences volume 291, issue 2024 ISSN 1471-2954 journal-article 2024 crroyalsociety https://doi.org/10.1098/rspb.2024.0624 2024-06-17T04:20:00Z Optimal migration theory prescribes adaptive strategies of energy, time or mortality minimization. To test alternative hypotheses of energy- and time-minimization migration we used multisensory data loggers that record time-resolved flight activity and light for positioning by geolocation in a long-distance migratory shorebird, the little ringed plover, Charadrius dubius . We could reject the hypothesis of energy minimization based on a relationship between stopover duration and subsequent flight time as predicted for a time minimizer. We found seasonally diverging slopes between stopover and flight durations in relation to the progress (time) of migration, which follows a time-minimizing policy if resource gradients along the migration route increase in autumn and decrease in spring. Total flight duration did not differ significantly between autumn and spring migration, although spring migration was 6% shorter. Overall duration of autumn migration was longer than that in spring, mainly owing to a mid-migration stop in most birds, when they likely initiated moult. Overall migration speed was significantly different between autumn and spring. Migratory flights often occurred as runs of two to seven nocturnal flights on adjacent days, which may be countering a time-minimization strategy. Other factors may influence a preference for nocturnal migration, such as avoiding flight in turbulent conditions, heat stress and diurnal predators. Article in Journal/Newspaper Ringed Plover The Royal Society Proceedings of the Royal Society B: Biological Sciences 291 2024 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
Optimal migration theory prescribes adaptive strategies of energy, time or mortality minimization. To test alternative hypotheses of energy- and time-minimization migration we used multisensory data loggers that record time-resolved flight activity and light for positioning by geolocation in a long-distance migratory shorebird, the little ringed plover, Charadrius dubius . We could reject the hypothesis of energy minimization based on a relationship between stopover duration and subsequent flight time as predicted for a time minimizer. We found seasonally diverging slopes between stopover and flight durations in relation to the progress (time) of migration, which follows a time-minimizing policy if resource gradients along the migration route increase in autumn and decrease in spring. Total flight duration did not differ significantly between autumn and spring migration, although spring migration was 6% shorter. Overall duration of autumn migration was longer than that in spring, mainly owing to a mid-migration stop in most birds, when they likely initiated moult. Overall migration speed was significantly different between autumn and spring. Migratory flights often occurred as runs of two to seven nocturnal flights on adjacent days, which may be countering a time-minimization strategy. Other factors may influence a preference for nocturnal migration, such as avoiding flight in turbulent conditions, heat stress and diurnal predators. |
author2 |
Swedish Research Council |
format |
Article in Journal/Newspaper |
author |
Hedenström, Anders Hedh, Linus |
spellingShingle |
Hedenström, Anders Hedh, Linus Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? |
author_facet |
Hedenström, Anders Hedh, Linus |
author_sort |
Hedenström, Anders |
title |
Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? |
title_short |
Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? |
title_full |
Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? |
title_fullStr |
Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? |
title_full_unstemmed |
Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? |
title_sort |
seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization? |
publisher |
The Royal Society |
publishDate |
2024 |
url |
http://dx.doi.org/10.1098/rspb.2024.0624 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2024.0624 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2024.0624 |
genre |
Ringed Plover |
genre_facet |
Ringed Plover |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 291, issue 2024 ISSN 1471-2954 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1098/rspb.2024.0624 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
291 |
container_issue |
2024 |
_version_ |
1809937611272224768 |