A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle)
International audience Birds undergo pronounced physiological changes during the reproduction, which may be linked to their parental efforts. Examining these changes may supply information about the birds’ energy expenditure during the particular phases of breeding and help to understand birds’ deci...
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Online Access: | https://hal.archives-ouvertes.fr/hal-01306070 https://doi.org/10.1007/s00300-015-1687-y |
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ftccsdartic:oai:HAL:hal-01306070v1 2023-05-15T13:16:15+02:00 A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle) Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Chastel, Olivier Kulaszewicz, Izabela Department of Vertebrate Ecology and Zoology University of Gdańsk (UG) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2015 https://hal.archives-ouvertes.fr/hal-01306070 https://doi.org/10.1007/s00300-015-1687-y en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1687-y hal-01306070 https://hal.archives-ouvertes.fr/hal-01306070 doi:10.1007/s00300-015-1687-y ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.archives-ouvertes.fr/hal-01306070 Polar Biology, Springer Verlag, 2015, 38 (8), pp.1203-1212. ⟨10.1007/s00300-015-1687-y⟩ Parental investments Corticosterone Heterophils-to-lymphocytes ratio Avian physiology Body mass Little auk Prolactin [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.1007/s00300-015-1687-y 2021-10-24T10:30:34Z International audience Birds undergo pronounced physiological changes during the reproduction, which may be linked to their parental efforts. Examining these changes may supply information about the birds’ energy expenditure during the particular phases of breeding and help to understand birds’ decisions about their subsequent parental investments. In this study, we measured a number of variables, i.e. body mass (scaled mass index, SMI), baseline corticosterone (CORT) and prolactin (PRL) concentrations and leucocyte profile [basically heterophils-to-lymphocytes (H/L) ratio], during the prelaying, incubation and chick rearing periods in 191 little auks (Alle alle), small Arctic seabirds. We expected the changes in the physiological variables to reflect the energy demands, i.e. the highest levels during chick rearing, moderate ones during incubation and the lowest ones prior to egg laying. Unexpectedly, we found SMI to be the highest during the incubation period, whereas lower and similar to each other values were recorded during the prelaying and chick rearing periods. Also, CORT unexpectedly peaked in the prelaying period, declined during incubation and remained at the incubation level during the chick rearing period. In accordance with our expectations, the PRL concentration was five times higher during the incubation than the chick rearing period and H/L ratio followed the pattern of the CORT changes. Consequently, there is no straightforward interpretation of the observed patterns of changes. Evidently, there are factors other than parental efforts per se that account for the dynamics of physiological changes. We found no sex differences in any of the variables investigated, which indicates that male and female parental investments are very similar. Article in Journal/Newspaper Alle alle Arctic little auk Polar Biology Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Polar Biology 38 8 1203 1212 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Parental investments Corticosterone Heterophils-to-lymphocytes ratio Avian physiology Body mass Little auk Prolactin [SDE]Environmental Sciences |
spellingShingle |
Parental investments Corticosterone Heterophils-to-lymphocytes ratio Avian physiology Body mass Little auk Prolactin [SDE]Environmental Sciences Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Chastel, Olivier Kulaszewicz, Izabela A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle) |
topic_facet |
Parental investments Corticosterone Heterophils-to-lymphocytes ratio Avian physiology Body mass Little auk Prolactin [SDE]Environmental Sciences |
description |
International audience Birds undergo pronounced physiological changes during the reproduction, which may be linked to their parental efforts. Examining these changes may supply information about the birds’ energy expenditure during the particular phases of breeding and help to understand birds’ decisions about their subsequent parental investments. In this study, we measured a number of variables, i.e. body mass (scaled mass index, SMI), baseline corticosterone (CORT) and prolactin (PRL) concentrations and leucocyte profile [basically heterophils-to-lymphocytes (H/L) ratio], during the prelaying, incubation and chick rearing periods in 191 little auks (Alle alle), small Arctic seabirds. We expected the changes in the physiological variables to reflect the energy demands, i.e. the highest levels during chick rearing, moderate ones during incubation and the lowest ones prior to egg laying. Unexpectedly, we found SMI to be the highest during the incubation period, whereas lower and similar to each other values were recorded during the prelaying and chick rearing periods. Also, CORT unexpectedly peaked in the prelaying period, declined during incubation and remained at the incubation level during the chick rearing period. In accordance with our expectations, the PRL concentration was five times higher during the incubation than the chick rearing period and H/L ratio followed the pattern of the CORT changes. Consequently, there is no straightforward interpretation of the observed patterns of changes. Evidently, there are factors other than parental efforts per se that account for the dynamics of physiological changes. We found no sex differences in any of the variables investigated, which indicates that male and female parental investments are very similar. |
author2 |
Department of Vertebrate Ecology and Zoology University of Gdańsk (UG) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Chastel, Olivier Kulaszewicz, Izabela |
author_facet |
Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Chastel, Olivier Kulaszewicz, Izabela |
author_sort |
Wojczulanis-Jakubas, Katarzyna |
title |
A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle) |
title_short |
A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle) |
title_full |
A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle) |
title_fullStr |
A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle) |
title_full_unstemmed |
A big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (Alle alle) |
title_sort |
big storm in a small body: seasonal changes in body mass, hormone concentrations and leukocyte profile in the little auk (alle alle) |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.archives-ouvertes.fr/hal-01306070 https://doi.org/10.1007/s00300-015-1687-y |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Alle alle Arctic little auk Polar Biology |
genre_facet |
Alle alle Arctic little auk Polar Biology |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.archives-ouvertes.fr/hal-01306070 Polar Biology, Springer Verlag, 2015, 38 (8), pp.1203-1212. ⟨10.1007/s00300-015-1687-y⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1687-y hal-01306070 https://hal.archives-ouvertes.fr/hal-01306070 doi:10.1007/s00300-015-1687-y |
op_doi |
https://doi.org/10.1007/s00300-015-1687-y |
container_title |
Polar Biology |
container_volume |
38 |
container_issue |
8 |
container_start_page |
1203 |
op_container_end_page |
1212 |
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1766273229265043456 |