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Pheomelanin synthesis varies with protein food abundance in developing goshawks

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...
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actualidad evolutionary ecology raptors melanogenesis animal pigmentation cysteine homeostasis phenotypic plasticity 04/06/19

Vitamin E supplementation—but not induced oxidative stress—influences telomere dynamics during early development in wild passerines

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...
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actualidad oxidative stress pied flycatcher ethology and biodiversity conservation telomere length early development 30/05/19

Intact but empty forests? Patterns of hunting induced mammal defaunation in the tropics

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...
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actualidad integrative ecology tropical forest defaunation ecosystem functioning overhunting mammal abundance declines 27/05/19

Unique evolution of vitamin A as an external pigment in tropical starlings

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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actualidad evolutionary ecology carotenoids birds biological pigments color evolution retinol 24/05/19

Identified the main introduction routes of the red swamp crayfish Procambarus clarkii during its global-scale invasion

Identified the main introduction routes of the red swamp crayfish Procambarus clarkii during its global-scale invasion
This North American species is the most widely spread freshwater crayfish worldwide, and is one of the worst invasive species due to its severe impacts on the structure and functioning of...
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actualidad wetland ecology mitochondrial dna propagule pression admixture invasion hubs invasion process 22/05/19
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