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Artículo

Complex Interplay of Body Condition, Life History, and Prevailing Environment Shapes Immune Defenses of Garter Snakes in the Wild

Palacios, Maria GabrielaIcon ; Cunnick, Joan E.; Bronikowski, Anne M.
Fecha de publicación: 14/08/2013
Editorial: University of Chicago Press
Revista: Physiological And Biochemical Zoology
ISSN: 1522-2152
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Zoología, Ornitología, Entomología, Etología

Resumen

The immunocompetence “pace-of-life” hypothesis proposes that fast-living organisms should invest more in innate immune defenses and less in adaptive defenses compared to slow-living ones. We found some support for this hypothesis in two lifehistory ecotypes of the snake Thamnophis elegans; fast-living individuals show higher levels of innate immunity compared to slow-living ones. Here, we optimized a lymphocyte proliferation assay to assess the complementary prediction that slowliving snakes should in turn show stronger adaptive defenses. We also assessed the “environmental” hypothesis that predicts that slow-living snakes should show lower levels of immune defenses (both innate and adaptive) given the harsher environment they live in. Proliferation of B- and T-lymphocytes of free-living individuals was on average higher in fast-living than slow-living snakes, opposing the pace-of-life hypothesis and supporting the environmental hypothesis. Bactericidal capacity of plasma, an index of innate immunity, did not differ between fast-living and slow-living snakes in this study, contrasting the previously documented pattern and highlighting the importance of annual environmental conditions as determinants of immune profiles of free-living animals. Our results do not negate a link between life history and immunity, as indicated by ecotype-specific relationships between lymphocyte proliferation and body condition, but suggest more subtle nuances than those currently proposed.
Palabras clave: Adaptive Immunity , Bacterial Killing , Ecological Immunology , Reptile
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/3462
URL: http://www.journals.uchicago.edu/doi/10.1086/672371
DOI: http://dx.doi.org/10.1086/672371
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Articulos(CCT-CENPAT)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CENPAT
Citación
Palacios, Maria Gabriela; Cunnick, Joan E.; Bronikowski, Anne M.; Complex Interplay of Body Condition, Life History, and Prevailing Environment Shapes Immune Defenses of Garter Snakes in the Wild; University of Chicago Press; Physiological And Biochemical Zoology; 86; 5; 14-8-2013; 547-558
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