Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin
Inference studies from body mass during the non-breeding season are rare in seabirds due to methodological difficulties to sample individuals. Here, we used 12 years of data collected from 2000 to 2019 on about 6800 birds mist-netted at La Somone, Senegal along the East Atlantic Flyway to examine th...
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Language: | English |
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Online Access: | https://orbi.uliege.be/handle/2268/266825 https://doi.org/10.1007/s10336-021-01903-y |
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ftorbi:oai:orbi.ulg.ac.be:2268/266825 2024-04-21T08:00:25+00:00 Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin Monticelli, David Defourny, H. Degros, E. Degros, A. 2021 https://orbi.uliege.be/handle/2268/266825 https://doi.org/10.1007/s10336-021-01903-y en eng Springer urn:issn:2193-7192 https://orbi.uliege.be/handle/2268/266825 info:hdl:2268/266825 doi:10.1007/s10336-021-01903-y scopus-id:2-s2.0-85107074731 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Journal of Ornithology, 162 (4), 1063-1074 (2021) Inter-individual variation NAOI SOI Sterna dougallii Sterna hirundo Timing of migration West Africa Senegal Life sciences Zoology Agriculture & agronomy Sciences du vivant Zoologie Agriculture & agronomie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article 2021 ftorbi https://doi.org/10.1007/s10336-021-01903-y 2024-03-27T14:55:28Z Inference studies from body mass during the non-breeding season are rare in seabirds due to methodological difficulties to sample individuals. Here, we used 12 years of data collected from 2000 to 2019 on about 6800 birds mist-netted at La Somone, Senegal along the East Atlantic Flyway to examine the role of intrinsic and environmental factors in explaining body mass variation in both Common Sterna hirundo and Roseate S. dougallii Terns. Most captured terns were subadults and adults aged three years and older, although ca. 22% of trapped Common Terns were immatures aged one–two years. Mean body mass values of Common and Roseate Terns were substantially lower than published values reported from European breeding sites. In both species, females were, on average, lighter than males, and in the Common Tern, immatures were also lighter than older individuals. Based on the subset of recoveries of birds initially marked at birth in Europe, we found significant differences in body mass according to natal origin in Common Terns but not in Roseate Terns. The variations reported for the former species were mainly attributed to size, with lighter and smaller individuals originating from the British Isles, intermediate individuals from western/central Europe, and heavier and larger birds from Fennoscandian countries. Capture date, used as a proxy measure of timing of migration, showed a strong covariation with body mass in both species. In fact, as the spring season progressed, mist-netted birds became progressively heavier, irrespective of age and natal origin. This suggests that earlier and lighter migrants may have opted for a more protracted migration duration involving more frequent and/or longer refueling periods. Conversely, late migrants needed greater body reserves to achieve the return journey to the colonies within a shorter period to arrive on time for the breeding season. Global climate phenomena such as the North Atlantic and Southern Oscillation indices did not explain inter-annual variations in body mass ... Article in Journal/Newspaper Common tern Fennoscandian North Atlantic Sterna hirundo University of Liège: ORBi (Open Repository and Bibliography) Journal of Ornithology 162 4 1063 1074 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Inter-individual variation NAOI SOI Sterna dougallii Sterna hirundo Timing of migration West Africa Senegal Life sciences Zoology Agriculture & agronomy Sciences du vivant Zoologie Agriculture & agronomie |
spellingShingle |
Inter-individual variation NAOI SOI Sterna dougallii Sterna hirundo Timing of migration West Africa Senegal Life sciences Zoology Agriculture & agronomy Sciences du vivant Zoologie Agriculture & agronomie Monticelli, David Defourny, H. Degros, E. Degros, A. Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin |
topic_facet |
Inter-individual variation NAOI SOI Sterna dougallii Sterna hirundo Timing of migration West Africa Senegal Life sciences Zoology Agriculture & agronomy Sciences du vivant Zoologie Agriculture & agronomie |
description |
Inference studies from body mass during the non-breeding season are rare in seabirds due to methodological difficulties to sample individuals. Here, we used 12 years of data collected from 2000 to 2019 on about 6800 birds mist-netted at La Somone, Senegal along the East Atlantic Flyway to examine the role of intrinsic and environmental factors in explaining body mass variation in both Common Sterna hirundo and Roseate S. dougallii Terns. Most captured terns were subadults and adults aged three years and older, although ca. 22% of trapped Common Terns were immatures aged one–two years. Mean body mass values of Common and Roseate Terns were substantially lower than published values reported from European breeding sites. In both species, females were, on average, lighter than males, and in the Common Tern, immatures were also lighter than older individuals. Based on the subset of recoveries of birds initially marked at birth in Europe, we found significant differences in body mass according to natal origin in Common Terns but not in Roseate Terns. The variations reported for the former species were mainly attributed to size, with lighter and smaller individuals originating from the British Isles, intermediate individuals from western/central Europe, and heavier and larger birds from Fennoscandian countries. Capture date, used as a proxy measure of timing of migration, showed a strong covariation with body mass in both species. In fact, as the spring season progressed, mist-netted birds became progressively heavier, irrespective of age and natal origin. This suggests that earlier and lighter migrants may have opted for a more protracted migration duration involving more frequent and/or longer refueling periods. Conversely, late migrants needed greater body reserves to achieve the return journey to the colonies within a shorter period to arrive on time for the breeding season. Global climate phenomena such as the North Atlantic and Southern Oscillation indices did not explain inter-annual variations in body mass ... |
format |
Article in Journal/Newspaper |
author |
Monticelli, David Defourny, H. Degros, E. Degros, A. |
author_facet |
Monticelli, David Defourny, H. Degros, E. Degros, A. |
author_sort |
Monticelli, David |
title |
Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin |
title_short |
Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin |
title_full |
Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin |
title_fullStr |
Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin |
title_full_unstemmed |
Body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin |
title_sort |
body mass during the spring migration period of two long-lived seabirds varies with capture date, age, sex, and natal origin |
publisher |
Springer |
publishDate |
2021 |
url |
https://orbi.uliege.be/handle/2268/266825 https://doi.org/10.1007/s10336-021-01903-y |
genre |
Common tern Fennoscandian North Atlantic Sterna hirundo |
genre_facet |
Common tern Fennoscandian North Atlantic Sterna hirundo |
op_source |
Journal of Ornithology, 162 (4), 1063-1074 (2021) |
op_relation |
urn:issn:2193-7192 https://orbi.uliege.be/handle/2268/266825 info:hdl:2268/266825 doi:10.1007/s10336-021-01903-y scopus-id:2-s2.0-85107074731 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s10336-021-01903-y |
container_title |
Journal of Ornithology |
container_volume |
162 |
container_issue |
4 |
container_start_page |
1063 |
op_container_end_page |
1074 |
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1796940861977657344 |