Data from: Predation risk determines pigmentation phenotype in nuthatches by melanin-related gene expression effects

Ismael Galvan
Pigments determine the appearance of organisms. However, pigment production can be associated to physiological constraints as in the case of pheomelanin, the sulphurated form of melanin whose synthesis in melanocytes consumes cysteine and consequently reduces the availability of glutathione (GSH) to exert antioxidant protection. Pheomelanogenesis may thus increase the susceptibility to suffer chronic oxidative stress. I investigated the possibility that environmental lability in the expression of genes regulating pheomelanogenesis protects from oxidative stress, a situation...
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