Publications by authors named "Vianey Alejandro"
Oxidative Challenges Do Not Impact Pheomelanin-Dependent Coloration in Male Japanese Quails.
J Exp Zool A Ecol Integr Physiol
January 2025
Article Synopsis
- Colorful traits, especially melanin-based colorations like pheomelanin, are crucial for animal communication but are less studied, particularly regarding their connection to oxidative stress in individuals.
- A study on male Japanese quails showed that pheomelanic colorations decreased after exposure to oxidative stress, but the intensity of this change was similar across different treatment groups, contradicting predictions.
- Additionally, the research found no significant effects on oxidative status indicators like glutathione levels or variations among the treatment groups, suggesting that the expected link between pheomelanin coloration and oxidative stress may not hold true.
AbstractInsulin-like growth factor 1 (IGF-1) is positively linked with growth and reproduction but negatively linked with survival, so a potential role of IGF-1 in modulating life history trade-offs has been proposed. However, the underlying mechanisms of the negative link between IGF-1 and survival are not yet clear, and oxidative stress has been proposed as a candidate. Immune activation is one important source of oxidative stress, and both immune activation and oxidative stress are known to reduce survival.
View Article and Find Full Text PDF