... gull ( Larus michahellis ) embryos. Egg supplementation of relatively large physiological doses of corticosterone depressed embryo growth (total body mass, tarsus length and liver mass), whereas administration of vitamin E in association with corticosterone restored normal growth. Vitamin E did...

... the concentration of vitamin E and corticosterone in the eggs of the yellow-legged gull ( Larus michahellis ) by administering a physiological (2 s.d.) dose both independently and in combination. We tested for an effect on chick post-natal growth, plasma antioxidant capacity (TAC) and oxidative compounds (TOS...

..., suggesting that mothers experience a trade-off between contrasting T effects. However, there is very little information on T pre-natal effects. In the yellow-legged gull ( Larus michahellis ), we increased yolk T concentration within physiological limits and measured the effects on development and oxidative...

... antioxidant concentration on other antioxidants, on their reciprocal relationships and on their relationships with embryo oxidative status or growth, which are expected if antioxidants defenses are integrated. In yellow-legged gull ( Larus michahellis ) embryos, we analyzed the covariation between several...

... properties. However, their role as antioxidants remains controversial. Additionally, it is also unclear whether oxidative stress mediates their immunostimulatory effects. In this field study, we separately supplemented yellow-legged gull ( Larus michahellis ) chicks with two carotenoids (lutein and β...