Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour
The first year of life is a period of high mortality in animals. Reduced foraging capacities of naive individuals might be the primary cause of their mortality. These capacities are supposed to be progressively acquired during the first months of life. In this study, we investigate the ontogeny of f...
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crwiley:10.1111/jav.02597 2024-04-07T07:52:05+00:00 Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour Pajot, Adrien Corbeau, Alexandre Jambon, Aurélie Weimerskirch, Henri 2021 http://dx.doi.org/10.1111/jav.02597 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jav.02597 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jav.02597 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Avian Biology volume 52, issue 2 ISSN 0908-8857 1600-048X Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2021 crwiley https://doi.org/10.1111/jav.02597 2024-03-14T00:43:16Z The first year of life is a period of high mortality in animals. Reduced foraging capacities of naive individuals might be the primary cause of their mortality. These capacities are supposed to be progressively acquired during the first months of life. In this study, we investigate the ontogeny of flight capacities, by day and night, of first‐year individuals, and compare it with adults from two closely related species of great albatrosses: Amsterdam Diomedea amsterdamensis and wandering Diomedea exulans albatrosses which forage in different environmental conditions. We used 71 tracks of 71 juvenile birds and 141 of 116 incubating adults to compare both age categories. In order to explore the effect of moon light on night activity, we elaborated a new formula which improves the precision of the proxy of moon illumination. By day, we found that juveniles of both species reach some adult foraging capacities in less than two months. By night, albatrosses have reduced activity increasing during the first weeks at sea for juveniles and changing in accordance with moon illumination for both juveniles and adults. A peak of flight activity at dawn and dusk was apparent for both species. Interspecific comparison underlined that Amsterdam albatrosses were more active than wandering albatrosses, suggesting a difference in food and foraging strategy. Overall, we highlighted how life history traits, environmental conditions and time of the day affect the foraging activity of two related species of seabirds. Article in Journal/Newspaper Diomedea exulans Wiley Online Library Journal of Avian Biology 52 2 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Pajot, Adrien Corbeau, Alexandre Jambon, Aurélie Weimerskirch, Henri Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The first year of life is a period of high mortality in animals. Reduced foraging capacities of naive individuals might be the primary cause of their mortality. These capacities are supposed to be progressively acquired during the first months of life. In this study, we investigate the ontogeny of flight capacities, by day and night, of first‐year individuals, and compare it with adults from two closely related species of great albatrosses: Amsterdam Diomedea amsterdamensis and wandering Diomedea exulans albatrosses which forage in different environmental conditions. We used 71 tracks of 71 juvenile birds and 141 of 116 incubating adults to compare both age categories. In order to explore the effect of moon light on night activity, we elaborated a new formula which improves the precision of the proxy of moon illumination. By day, we found that juveniles of both species reach some adult foraging capacities in less than two months. By night, albatrosses have reduced activity increasing during the first weeks at sea for juveniles and changing in accordance with moon illumination for both juveniles and adults. A peak of flight activity at dawn and dusk was apparent for both species. Interspecific comparison underlined that Amsterdam albatrosses were more active than wandering albatrosses, suggesting a difference in food and foraging strategy. Overall, we highlighted how life history traits, environmental conditions and time of the day affect the foraging activity of two related species of seabirds. |
format |
Article in Journal/Newspaper |
author |
Pajot, Adrien Corbeau, Alexandre Jambon, Aurélie Weimerskirch, Henri |
author_facet |
Pajot, Adrien Corbeau, Alexandre Jambon, Aurélie Weimerskirch, Henri |
author_sort |
Pajot, Adrien |
title |
Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour |
title_short |
Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour |
title_full |
Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour |
title_fullStr |
Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour |
title_full_unstemmed |
Diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour |
title_sort |
diel at‐sea activity of two species of great albatrosses: the ontogeny of foraging and movement behaviour |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/jav.02597 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jav.02597 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jav.02597 |
genre |
Diomedea exulans |
genre_facet |
Diomedea exulans |
op_source |
Journal of Avian Biology volume 52, issue 2 ISSN 0908-8857 1600-048X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jav.02597 |
container_title |
Journal of Avian Biology |
container_volume |
52 |
container_issue |
2 |
_version_ |
1795667283760119808 |