Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?

The different leucocyte types are an important part of the immune system. Thus, they have been used in ecological studies to assess immune function and physiological stress in wild birds. It is generally assumed that increased stress and decreased condition are associated with an increase in the rat...

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Autores principales:	Masello, J.F., Choconi, R.G., Helmer, M., Kremberg, T., Lubjuhn, T., Quillfeldt, P.
Formato:	JOUR
Materias:	Body condition H/L ratio Haematology Immunology Innate immunity Leucocyte counts Patagonian Conure Psittaciformes animal cell animal experiment article body constitution burrowing species controlled study Cyanoliseus patagonus erythrocyte female innate immunity leukocyte lymphocyte male nestling nonhuman parrot physiological stress wild animal Age Factors Animal Nutritional Physiological Phenomena Animals Animals, Wild Argentina Body Constitution Erythrocyte Count Immunity, Innate Leukocyte Count Leukocytes Nesting Behavior Parrots Aves Psittacidae
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_10956433_v152_n2_p176_Masello
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_10956433_v152_n2_p176_Masello
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spelling	todo:paper_10956433_v152_n2_p176_Masello2023-10-03T16:05:21Z Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild? Masello, J.F. Choconi, R.G. Helmer, M. Kremberg, T. Lubjuhn, T. Quillfeldt, P. Body condition H/L ratio Haematology Immunology Innate immunity Leucocyte counts Patagonian Conure Psittaciformes animal cell animal experiment article body constitution burrowing species controlled study Cyanoliseus patagonus erythrocyte female innate immunity leukocyte lymphocyte male nestling nonhuman parrot physiological stress wild animal Age Factors Animal Nutritional Physiological Phenomena Animals Animals, Wild Argentina Body Constitution Erythrocyte Count Immunity, Innate Leukocyte Count Leukocytes Nesting Behavior Parrots Aves Cyanoliseus patagonus Psittacidae Psittaciformes The different leucocyte types are an important part of the immune system. Thus, they have been used in ecological studies to assess immune function and physiological stress in wild birds. It is generally assumed that increased stress and decreased condition are associated with an increase in the ratio of heterophils to lymphocytes, the H/L ratio. We studied leucocyte profiles in relation to body condition in nestling Burrowing Parrots (Cyanoliseus patagonus) in North-eastern Patagonia, Argentina. As in other wild parrots, heterophils were the most numerous leucocyte type, suggesting strong investment into innate immunity. Leucocyte profiles did not change with the age, while nestlings in better body condition increased the number of heterophils. Because the number of lymphocytes was independent of body condition, as a result we observed a positive correlation between body condition and the H/L ratio. The total number of leucocytes relative to erythrocytes increased in nestlings in better body condition, indicating a larger overall investment into immune function in well-nourished nestlings. The observed heterophilic profiles of nestling Burrowing Parrots together with the positive relationship between H/L ratio and body condition may indicate a favoured investment in a robust innate immunity that reduces the risk of infection taking hold in these long-lived birds. © 2008 Elsevier Inc. All rights reserved. Fil:Masello, J.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10956433_v152_n2_p176_Masello
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Body condition H/L ratio Haematology Immunology Innate immunity Leucocyte counts Patagonian Conure Psittaciformes animal cell animal experiment article body constitution burrowing species controlled study Cyanoliseus patagonus erythrocyte female innate immunity leukocyte lymphocyte male nestling nonhuman parrot physiological stress wild animal Age Factors Animal Nutritional Physiological Phenomena Animals Animals, Wild Argentina Body Constitution Erythrocyte Count Immunity, Innate Leukocyte Count Leukocytes Nesting Behavior Parrots Aves Cyanoliseus patagonus Psittacidae Psittaciformes
spellingShingle	Body condition H/L ratio Haematology Immunology Innate immunity Leucocyte counts Patagonian Conure Psittaciformes animal cell animal experiment article body constitution burrowing species controlled study Cyanoliseus patagonus erythrocyte female innate immunity leukocyte lymphocyte male nestling nonhuman parrot physiological stress wild animal Age Factors Animal Nutritional Physiological Phenomena Animals Animals, Wild Argentina Body Constitution Erythrocyte Count Immunity, Innate Leukocyte Count Leukocytes Nesting Behavior Parrots Aves Cyanoliseus patagonus Psittacidae Psittaciformes Masello, J.F. Choconi, R.G. Helmer, M. Kremberg, T. Lubjuhn, T. Quillfeldt, P. Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?
topic_facet	Body condition H/L ratio Haematology Immunology Innate immunity Leucocyte counts Patagonian Conure Psittaciformes animal cell animal experiment article body constitution burrowing species controlled study Cyanoliseus patagonus erythrocyte female innate immunity leukocyte lymphocyte male nestling nonhuman parrot physiological stress wild animal Age Factors Animal Nutritional Physiological Phenomena Animals Animals, Wild Argentina Body Constitution Erythrocyte Count Immunity, Innate Leukocyte Count Leukocytes Nesting Behavior Parrots Aves Cyanoliseus patagonus Psittacidae Psittaciformes
description	The different leucocyte types are an important part of the immune system. Thus, they have been used in ecological studies to assess immune function and physiological stress in wild birds. It is generally assumed that increased stress and decreased condition are associated with an increase in the ratio of heterophils to lymphocytes, the H/L ratio. We studied leucocyte profiles in relation to body condition in nestling Burrowing Parrots (Cyanoliseus patagonus) in North-eastern Patagonia, Argentina. As in other wild parrots, heterophils were the most numerous leucocyte type, suggesting strong investment into innate immunity. Leucocyte profiles did not change with the age, while nestlings in better body condition increased the number of heterophils. Because the number of lymphocytes was independent of body condition, as a result we observed a positive correlation between body condition and the H/L ratio. The total number of leucocytes relative to erythrocytes increased in nestlings in better body condition, indicating a larger overall investment into immune function in well-nourished nestlings. The observed heterophilic profiles of nestling Burrowing Parrots together with the positive relationship between H/L ratio and body condition may indicate a favoured investment in a robust innate immunity that reduces the risk of infection taking hold in these long-lived birds. © 2008 Elsevier Inc. All rights reserved.
format	JOUR
author	Masello, J.F. Choconi, R.G. Helmer, M. Kremberg, T. Lubjuhn, T. Quillfeldt, P.
author_facet	Masello, J.F. Choconi, R.G. Helmer, M. Kremberg, T. Lubjuhn, T. Quillfeldt, P.
author_sort	Masello, J.F.
title	Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?
title_short	Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?
title_full	Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?
title_fullStr	Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?
title_full_unstemmed	Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?
title_sort	do leucocytes reflect condition in nestling burrowing parrots cyanoliseus patagonus in the wild?
url	http://hdl.handle.net/20.500.12110/paper_10956433_v152_n2_p176_Masello
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Do leucocytes reflect condition in nestling burrowing parrots Cyanoliseus patagonus in the wild?

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