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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Graña Grilli, Maricel, Pari, Marcela, Ibáñez, Andrés Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Naturales
body
immunological conditions
Brown Skuas
seabirds
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/136525
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-136525
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
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 (<i>Stercorarius antarcticus lonnbergi</i>) 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.
format Articulo
Articulo
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
work_keys_str_mv AT granagrillimaricel poorbodyconditionsduringthebreedingperiodinaseabirdpopulationwithlowbreedingsuccess
AT parimarcela poorbodyconditionsduringthebreedingperiodinaseabirdpopulationwithlowbreedingsuccess
AT ibanezandresesteban poorbodyconditionsduringthebreedingperiodinaseabirdpopulationwithlowbreedingsuccess
bdutipo_str Repositorios
_version_ 1764820456974581762

Ejemplares similares