High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance
Age-related variation in foraging performance can result from both within-individual change and selection processes. These mechanisms can only be disentangled by using logistically challenging long-term, longitudinal studies. Coupling a long-term demographic data set with high-temporal-resolution tr...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | http://dx.doi.org/10.1098/rspb.2022.2480 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2022.2480 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2022.2480 |
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crroyalsociety:10.1098/rspb.2022.2480 2024-09-15T18:31:40+00:00 High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance Lescroël, Amélie Schmidt, Annie Ainley, David G. Dugger, Katie M. Elrod, Megan Jongsomjit, Dennis Morandini, Virginia Winquist, Suzanne Ballard, Grant NASA National Science Foundation 2023 http://dx.doi.org/10.1098/rspb.2022.2480 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2022.2480 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2022.2480 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 290, issue 1996 ISSN 0962-8452 1471-2954 journal-article 2023 crroyalsociety https://doi.org/10.1098/rspb.2022.2480 2024-07-08T04:26:38Z Age-related variation in foraging performance can result from both within-individual change and selection processes. These mechanisms can only be disentangled by using logistically challenging long-term, longitudinal studies. Coupling a long-term demographic data set with high-temporal-resolution tracking of 18 Adélie penguins ( Pygoscelis adeliae , age 4–15 yrs old) over three consecutive annual cycles, we examined how foraging behaviour changed within individuals of different age classes. Evidence indicated within-individual improvement in young and middle-age classes, but a significant decrease in foraging dive frequency within old individuals, associated with a decrease in the dive descent rate. Decreases in foraging performance occurred at a later age (from 12–15 yrs old to 15–18 yrs old) than the onset of senescence predicted for this species (9–11 yrs old). Foraging dive frequency was most affected by the interaction between breeding status and annual life-cycle periods, with frequency being highest during returning migration and breeding season and was highest overall for successful breeders during the chick-rearing period. Females performed more foraging dives per hour than males. This longitudinal, full annual cycle study allowed us to shed light on the changes in foraging performance occurring among individuals of different age classes and highlighted the complex interactions among drivers of individual foraging behaviour. Article in Journal/Newspaper Pygoscelis adeliae The Royal Society Proceedings of the Royal Society B: Biological Sciences 290 1996 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
Age-related variation in foraging performance can result from both within-individual change and selection processes. These mechanisms can only be disentangled by using logistically challenging long-term, longitudinal studies. Coupling a long-term demographic data set with high-temporal-resolution tracking of 18 Adélie penguins ( Pygoscelis adeliae , age 4–15 yrs old) over three consecutive annual cycles, we examined how foraging behaviour changed within individuals of different age classes. Evidence indicated within-individual improvement in young and middle-age classes, but a significant decrease in foraging dive frequency within old individuals, associated with a decrease in the dive descent rate. Decreases in foraging performance occurred at a later age (from 12–15 yrs old to 15–18 yrs old) than the onset of senescence predicted for this species (9–11 yrs old). Foraging dive frequency was most affected by the interaction between breeding status and annual life-cycle periods, with frequency being highest during returning migration and breeding season and was highest overall for successful breeders during the chick-rearing period. Females performed more foraging dives per hour than males. This longitudinal, full annual cycle study allowed us to shed light on the changes in foraging performance occurring among individuals of different age classes and highlighted the complex interactions among drivers of individual foraging behaviour. |
author2 |
NASA National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Lescroël, Amélie Schmidt, Annie Ainley, David G. Dugger, Katie M. Elrod, Megan Jongsomjit, Dennis Morandini, Virginia Winquist, Suzanne Ballard, Grant |
spellingShingle |
Lescroël, Amélie Schmidt, Annie Ainley, David G. Dugger, Katie M. Elrod, Megan Jongsomjit, Dennis Morandini, Virginia Winquist, Suzanne Ballard, Grant High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance |
author_facet |
Lescroël, Amélie Schmidt, Annie Ainley, David G. Dugger, Katie M. Elrod, Megan Jongsomjit, Dennis Morandini, Virginia Winquist, Suzanne Ballard, Grant |
author_sort |
Lescroël, Amélie |
title |
High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance |
title_short |
High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance |
title_full |
High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance |
title_fullStr |
High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance |
title_full_unstemmed |
High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance |
title_sort |
high-resolution recording of foraging behaviour over multiple annual cycles shows decline in old adélie penguins' performance |
publisher |
The Royal Society |
publishDate |
2023 |
url |
http://dx.doi.org/10.1098/rspb.2022.2480 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2022.2480 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2022.2480 |
genre |
Pygoscelis adeliae |
genre_facet |
Pygoscelis adeliae |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 290, issue 1996 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2022.2480 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
290 |
container_issue |
1996 |
_version_ |
1810473423659335680 |