Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development

During breeding, Brown Skuas (Stercorarius antarcticus lonnbergi) perform a great physical effort in the care and maintenance of the nest. Interestingly, the breeding colony on which this work was conducted is in steady decline in recent years. In order to understand the physiological background res...

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Autores principales: Ibáñez, Andrés Esteban, Graña Grilli, Maricel, Figueroa, Amalia, Pari, Marcela, Montalti, Diego
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Naturales
Reproduction
Immune status
Brown skua (Stercorarius antarcticus lonnbergi)
Antarctica
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/154734
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-154734
record_format dspace
spelling I19-R120-10915-1547342023-06-27T20:08:25Z http://sedici.unlp.edu.ar/handle/10915/154734 issn:1432-2056 Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development Ibáñez, Andrés Esteban Graña Grilli, Maricel Figueroa, Amalia Pari, Marcela Montalti, Diego 2017 2023-06-27T18:53:12Z en Ciencias Naturales Reproduction Immune status Brown skua (Stercorarius antarcticus lonnbergi) Antarctica During breeding, Brown Skuas (Stercorarius antarcticus lonnbergi) perform a great physical effort in the care and maintenance of the nest. Interestingly, the breeding colony on which this work was conducted is in steady decline in recent years. In order to understand the physiological background responsible for the trade off between reproductive effort and health status, in adults and the possible reasons for the colony decline, we evaluated the health status in Brown Skuas parents and growing chicks and blood samples were obtained in three different breeding stages from adults: In (incubation), Er (after egg hatching), and Lr (during chick rearing) and from developing chicks. Serum albumin, α-, β-. and γ-globulin fractions, IgY level and corticosterone were determined in adults, while plasma proteins concentration, electrolytes, and γ-globulins were determined in chicks. Differences in albumin, α-, and γ-globulins and IgY levels were observed in adults through the reproductive stages, indicating a decline in nutritional status and immunocompetence during breeding. In addition, a decline in body condition and immune status was observed in growing chicks, indicating a close relationship between the decrease of the health status and reproductive effort performed by adults and the physiological status of the nestlings during development. Facultad de Ciencias Naturales y Museo Consejo Nacional de Investigaciones Científicas y Técnicas Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 193-200
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Reproduction
Immune status
Brown skua (Stercorarius antarcticus lonnbergi)
Antarctica
spellingShingle Ciencias Naturales
Reproduction
Immune status
Brown skua (Stercorarius antarcticus lonnbergi)
Antarctica
Ibáñez, Andrés Esteban
Graña Grilli, Maricel
Figueroa, Amalia
Pari, Marcela
Montalti, Diego
Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development
topic_facet Ciencias Naturales
Reproduction
Immune status
Brown skua (Stercorarius antarcticus lonnbergi)
Antarctica
description During breeding, Brown Skuas (Stercorarius antarcticus lonnbergi) perform a great physical effort in the care and maintenance of the nest. Interestingly, the breeding colony on which this work was conducted is in steady decline in recent years. In order to understand the physiological background responsible for the trade off between reproductive effort and health status, in adults and the possible reasons for the colony decline, we evaluated the health status in Brown Skuas parents and growing chicks and blood samples were obtained in three different breeding stages from adults: In (incubation), Er (after egg hatching), and Lr (during chick rearing) and from developing chicks. Serum albumin, α-, β-. and γ-globulin fractions, IgY level and corticosterone were determined in adults, while plasma proteins concentration, electrolytes, and γ-globulins were determined in chicks. Differences in albumin, α-, and γ-globulins and IgY levels were observed in adults through the reproductive stages, indicating a decline in nutritional status and immunocompetence during breeding. In addition, a decline in body condition and immune status was observed in growing chicks, indicating a close relationship between the decrease of the health status and reproductive effort performed by adults and the physiological status of the nestlings during development.
format Articulo
Articulo
author Ibáñez, Andrés Esteban
Graña Grilli, Maricel
Figueroa, Amalia
Pari, Marcela
Montalti, Diego
author_facet Ibáñez, Andrés Esteban
Graña Grilli, Maricel
Figueroa, Amalia
Pari, Marcela
Montalti, Diego
author_sort Ibáñez, Andrés Esteban
title Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development
title_short Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development
title_full Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development
title_fullStr Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development
title_full_unstemmed Declining health status of Brown Skua (<i>Stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development
title_sort declining health status of brown skua (<i>stercorarius antarcticus</i> lonnbergi) parents and their offspring during chick development
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/154734
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