Yolk vitamin E positively affects prenatal growth but not oxidative status in yellow-legged gull embryos
Yolk vitamin E positively affects prenatal growth but not oxidative status in yellow-legged gull embryos作者机构：Department of Environmental Science and Policy University of Milan via Celoria 26 20133 Milano Italy Department of Animal Science University of Yuzuncu Yil 65090 Van Turkey Department of Biosciences University of Milan via Celoria 26 20133 Milan Italy
出 版 物：《Current Zoology》 (动物学报（英文版）)
年 卷 期：2018年第64卷第3期
页 面：285-292页
核心收录：
学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学]
主 题：Larus michahellis maternal effects morphological traits oxidative status prenatal period vitamin E.
摘 要：Parental effects occur whenever the phenotype of parents or the environment that they experience influences the phenotype and fitness of their offspring, In birds, parental effects are often mediated by the size and biochemical quality of the eggs in terms of maternally transferred components. Exogenous antioxidants are key egg components that accomplish crucial physiological functions during early life. Among these, vitamin E plays a vital role during prenatal development when the intense metabolism accompanying rapid embryo growth results in overproduction of pro-oxidant molecules. Studies of captive birds have demonstrated the positive effect of vitamin E supplementation on diverse phenotypic traits of hatchling and adult individuals, but its effects on embryo phenotype has never been investigated neither in captivity nor under a natural selection regime. In the present study, we experimentally tested the effect of the in ovo supplementation of vitamin E on morphological traits and oxidative status of yellow-legged gull （Larus michahellis） embryos. The supplementation of vitamin E promoted somatic growth in embryos soon before hatching, but did not affect their oxidative status. Our results suggest that maternally transferred vitamin E concentrations are optimized to prevent imbalances of oxidative status and the consequent raise of oxidative damage in yellow-legged gull embryos during prenatal development.
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