Poor body conditions during the breeding period in a seabird population with low breeding success
Breeding has a high energetic cost and, in central place foragers, also restricts the ability of parents for self-foraging, with affecting on their body and immunological conditions. In migratory species, breeding overlaps the period of recovery of body conditions before the following outbound migra...
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Language: | English |
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Online Access: | http://hdl.handle.net/11336/83934 |
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ftconicet:oai:ri.conicet.gov.ar:11336/83934 2023-10-09T21:46:40+02:00 Poor body conditions during the breeding period in a seabird population with low breeding success Graña Grilli, Maricel Pari, Marcela Ibañez, Andres Esteban application/pdf http://hdl.handle.net/11336/83934 eng eng Springer info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s00227-018-3401-4 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-018-3401-4 http://hdl.handle.net/11336/83934 Graña Grilli, Maricel; Pari, Marcela; Ibañez, Andres Esteban; Poor body conditions during the breeding period in a seabird population with low breeding success; Springer; Marine Biology; 165; 9; 9-2018; 1-9 0025-3162 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Brown Skua Body Condition Hematology Health Status https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00227-018-3401-4 2023-09-24T20:27:38Z Breeding has a high energetic cost and, in central place foragers, also restricts the ability of parents for self-foraging, with affecting on their body and immunological conditions. In migratory species, breeding overlaps the period of recovery of body conditions before the following outbound migration. Those factors may reduce the breeding success and even lead parents to abandon their offspring if parental body condition cannot guarantee the success of the next migration. We studied the body and immunological conditions of a low breeding success population of Brown Skuas (Stercorarius antarcticus lonnbergi) throughout their breeding season. We evaluated changes in their body mass, blood parameters and heterophil:lymphocyte ratios (H:L), at three stages of their breeding period: Incubation, Early rearing and Late rearing. The body mass of female Brown skuas decreased during the initial stages of the breeding period and recovered towards the end. The changes in metabolites suggest a use of protein body reserves but not of lipid reserves. The H:L ratio did not indicate changes in the immune condition of the birds. Our results suggest that this low breeding success population begins its breeding period with a poor body condition that it continues to decline throughout the season. Those poor body conditions added to the need for recovery for the next migration may be the cause of the abandonment of almost totally feathered chicks. Our evidence highlights the importance of food availability, in either the breeding or wintering sites, or both, on the health of the populations of migratory top predators. Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario ... Article in Journal/Newspaper Antarc* antarcticus Brown Skua Stercorarius antarcticus CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Patagonia Argentina Marine Biology 165 9 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Brown Skua Body Condition Hematology Health Status https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
Brown Skua Body Condition Hematology Health Status https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Graña Grilli, Maricel Pari, Marcela Ibañez, Andres Esteban Poor body conditions during the breeding period in a seabird population with low breeding success |
topic_facet |
Brown Skua Body Condition Hematology Health Status https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Breeding has a high energetic cost and, in central place foragers, also restricts the ability of parents for self-foraging, with affecting on their body and immunological conditions. In migratory species, breeding overlaps the period of recovery of body conditions before the following outbound migration. Those factors may reduce the breeding success and even lead parents to abandon their offspring if parental body condition cannot guarantee the success of the next migration. We studied the body and immunological conditions of a low breeding success population of Brown Skuas (Stercorarius antarcticus lonnbergi) throughout their breeding season. We evaluated changes in their body mass, blood parameters and heterophil:lymphocyte ratios (H:L), at three stages of their breeding period: Incubation, Early rearing and Late rearing. The body mass of female Brown skuas decreased during the initial stages of the breeding period and recovered towards the end. The changes in metabolites suggest a use of protein body reserves but not of lipid reserves. The H:L ratio did not indicate changes in the immune condition of the birds. Our results suggest that this low breeding success population begins its breeding period with a poor body condition that it continues to decline throughout the season. Those poor body conditions added to the need for recovery for the next migration may be the cause of the abandonment of almost totally feathered chicks. Our evidence highlights the importance of food availability, in either the breeding or wintering sites, or both, on the health of the populations of migratory top predators. Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario ... |
format |
Article in Journal/Newspaper |
author |
Graña Grilli, Maricel Pari, Marcela Ibañez, Andres Esteban |
author_facet |
Graña Grilli, Maricel Pari, Marcela Ibañez, Andres Esteban |
author_sort |
Graña Grilli, Maricel |
title |
Poor body conditions during the breeding period in a seabird population with low breeding success |
title_short |
Poor body conditions during the breeding period in a seabird population with low breeding success |
title_full |
Poor body conditions during the breeding period in a seabird population with low breeding success |
title_fullStr |
Poor body conditions during the breeding period in a seabird population with low breeding success |
title_full_unstemmed |
Poor body conditions during the breeding period in a seabird population with low breeding success |
title_sort |
poor body conditions during the breeding period in a seabird population with low breeding success |
publisher |
Springer |
url |
http://hdl.handle.net/11336/83934 |
geographic |
Patagonia Argentina |
geographic_facet |
Patagonia Argentina |
genre |
Antarc* antarcticus Brown Skua Stercorarius antarcticus |
genre_facet |
Antarc* antarcticus Brown Skua Stercorarius antarcticus |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s00227-018-3401-4 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-018-3401-4 http://hdl.handle.net/11336/83934 Graña Grilli, Maricel; Pari, Marcela; Ibañez, Andres Esteban; Poor body conditions during the breeding period in a seabird population with low breeding success; Springer; Marine Biology; 165; 9; 9-2018; 1-9 0025-3162 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00227-018-3401-4 |
container_title |
Marine Biology |
container_volume |
165 |
container_issue |
9 |
_version_ |
1779309159268745216 |