Oxidative stress could be a key selective force shaping the expression of colored traits produced by the primary animal pigments in integuments: carotenoids and melanins. However. the impact of oxidative stress on melanic ornaments has only recently been explored. whereas its role in the expression of carotenoid-based traits is not fully understood. https://www.adventuresonabike.com/product-category/refill-diffusore-ambiente/