Simple Summary Among feed-derived antioxidants, selenium (Se) was shown to have a
special place as an essential part of 25 selenoproteins identified in animals. Organic Se, in …

Fatty acids are essential for life because they are essential components of cellular
membranes. Lower animals can synthesize all four classes of fatty acids from non-lipid …

Aims/hypothesis Metabolic disorders are commonly investigated using knockout and
transgenic mouse models. A variety of mouse strains have been used for this purpose …

In recent years, behavioural ecologists have taken to studying oxidative stress in free-
ranging organisms because it has been proposed as an important mediator of life-history …

Mammalian lifespan differs by> 100 fold, but the mechanisms associated with such longevity
differences are not understood. Here, we conducted a study on primary skin fibroblasts …

Parrots are one of the most distinct and intriguing groups of birds, with highly expanded
brains [1], highly developed cognitive [2] and vocal communication [3] skills, and a long …

Hydrogen sulfide (H 2 S) is one of the biologically active gases (gasotransmitters), which
plays an important role in various physiological processes and aging. Its production in the …

Animals dynamically adjust their physiology and behavior to survive in changing
environments, and seasonal migration is one life stage that demonstrates these dynamic …

During migration, birds substantially increase their metabolic rate and burn fats as fuel and
yet somehow avoid succumbing to overwhelming oxidative damage. The physiological …

Contemporary studies on aging and longevity have largely overlooked the role that
adaptation plays in lifespan variation across species. Emerging evidence indicates that the …