Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/284158
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | The oxidation handicap hypothesis and the carotenoid allocation trade-off |
Autor: | Alonso-Álvarez, Carlos CSIC ORCID ; Pérez-Rodríguez, Lorenzo CSIC ORCID; Mateo, Rafael CSIC ORCID ; Chastel, Olivier; Viñuela, Javier CSIC ORCID | Fecha de publicación: | 2008 | Editor: | European Society of Evolutionary Biology John Wiley & Sons |
Citación: | Journal of Evolutionary Biology 21(6): 1789-1797 (2008) | Resumen: | The oxidation handicap hypothesis proposes that testosterone mediates the trade-off between the expression of secondary sexual traits and the fight against free radicals. Coloured traits controlled by testosterone can be produced by carotenoid pigments (yellow-orange-red traits), but carotenoids also help to quench free radicals. Recently, it has been shown that testosterone increases the amount of circulating carotenoids in birds. Here, a testosterone-mediated trade-off in the carotenoid allocation between colour expression and the fight against oxidative stress is proposed. Male red-legged partridges were treated with testosterone, anti-androgens or manipulated as controls. Testosterone-treated males maintained the highest circulating carotenoid levels, but showed the palest red traits and no evidence of oxidative damage. Increased levels of a key intracellular antioxidant (i.e. glutathione) indicated that an oxidative challenge was in fact induced but controlled. The trade-off was apparently solved by reducing redness, allowing increased carotenoid availability, which could have contributed to buffer oxidative stress. | Versión del editor: | https://doi.org/10.1111/j.1420-9101.2008.01591.x | URI: | http://hdl.handle.net/10261/284158 | DOI: | 10.1111/j.1420-9101.2008.01591.x | ISSN: | 1010-061X |
Aparece en las colecciones: | (IREC) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 59,24 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
PubMed Central
Citations
31
checked on 21-abr-2024
SCOPUSTM
Citations
128
checked on 01-may-2024
WEB OF SCIENCETM
Citations
124
checked on 24-feb-2024
Page view(s)
21
checked on 01-may-2024
Download(s)
4
checked on 01-may-2024
Google ScholarTM
Check
Altmetric
Altmetric
Artículos relacionados:
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.