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Fish eggs can be dispersed by waterfowl
Researchers have found that eggs of two fish species can survive passage through the digestive tract of waterfowl after being swallowed, and this finding may help explain the long-standing mystery...
Pheomelanin synthesis varies with protein food abundance in developing goshawks
The accumulation of the amino acid cysteine in lysosomes produces toxic substances, which are avoided by a gene (CTNS) coding for a transporter that pumps cystine out of lysosomes. Melanosomes are...
Vitamin E supplementation—but not induced oxidative stress—influences telomere dynamics during early development in wild passerines
Telomere length is a marker of cellular senescence that relates to different components of individual fitness. Oxidative stress is often claimed as a main proximate factor contributing to telomere...
Intact but empty forests? Patterns of hunting induced mammal defaunation in the tropics
Tropical forests are increasingly degraded by industrial logging, urbanization, agriculture, and infrastructure, with only 20% of the remaining area considered intact. However, this figure does not...
Unique evolution of vitamin A as an external pigment in tropical starlings
Pigments are largely responsible for the appearance of organisms. Most biological pigments derive from the metabolism of shikimic acid (melanins), mevalonic acid (carotenoids) or levulinic acid...
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