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 afecting on their body and immunological conditions. In migratory species, breeding overlaps the period of recovery of body conditions before the following outbound migrat...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://sedici.unlp.edu.ar/handle/10915/136525 |
id |
ftunivlaplata:oai:sedici.unlp.edu.ar:10915/136525 |
---|---|
record_format |
openpolar |
spelling |
ftunivlaplata:oai:sedici.unlp.edu.ar:10915/136525 2023-05-15T14:01:53+02:00 Poor body conditions during the breeding period in a seabird population with low breeding success Graña Grilli, Maricel Pari, Marcela Ibáñez, Andrés Esteban 2018-09 application/pdf http://sedici.unlp.edu.ar/handle/10915/136525 en eng http://sedici.unlp.edu.ar/handle/10915/136525 issn:0025-3162 issn:1432-1793 http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) CC-BY Ciencias Naturales body immunological conditions Brown Skuas seabirds Articulo 2018 ftunivlaplata 2022-05-22T00:06:07Z Breeding has a high energetic cost and, in central place foragers, also restricts the ability of parents for self-foraging, with afecting 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 ofspring 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. Facultad de Ciencias Naturales y Museo Article in Journal/Newspaper Antarc* antarcticus Stercorarius antarcticus Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
institution |
Open Polar |
collection |
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
op_collection_id |
ftunivlaplata |
language |
English |
topic |
Ciencias Naturales body immunological conditions Brown Skuas seabirds |
spellingShingle |
Ciencias Naturales body immunological conditions Brown Skuas seabirds Graña Grilli, Maricel Pari, Marcela Ibáñez, Andrés Esteban Poor body conditions during the breeding period in a seabird population with low breeding success |
topic_facet |
Ciencias Naturales body immunological conditions Brown Skuas seabirds |
description |
Breeding has a high energetic cost and, in central place foragers, also restricts the ability of parents for self-foraging, with afecting 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 ofspring 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. Facultad de Ciencias Naturales y Museo |
format |
Article in Journal/Newspaper |
author |
Graña Grilli, Maricel Pari, Marcela Ibáñez, Andrés Esteban |
author_facet |
Graña Grilli, Maricel Pari, Marcela Ibáñez, Andrés 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 |
publishDate |
2018 |
url |
http://sedici.unlp.edu.ar/handle/10915/136525 |
genre |
Antarc* antarcticus Stercorarius antarcticus |
genre_facet |
Antarc* antarcticus Stercorarius antarcticus |
op_relation |
http://sedici.unlp.edu.ar/handle/10915/136525 issn:0025-3162 issn:1432-1793 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
op_rightsnorm |
CC-BY |
_version_ |
1766271942477742080 |