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Las altas temperaturas están provocando que las lagunas y las marismas de Doñana pierdan agua rápidamente

La superficie inundada en la marisma es de un 78% pero la profundidad es escasa. Por otra parte, sólo el 1,9% de las lagunas temporales están inundadas. Las precipitaciones crean una oportunidad...

Traffic noise causes lifelong harm to baby birds

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Illegal wildlife trade, a serious problem for biodiversity and human health

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Urbanization and loss of woody vegetation are changing key traits of arthropod communities

Urbanization is favouring smaller beetle species and larger spider species with greater dispersal capacity.

The loss of woody areas is linked to a decline in the duration of the activity...

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Pheomelanin synthesis in insects: Implications for Parkinson's disease

Pheomelanin synthesis in insects: Implications for Parkinson's disease

Melanins are biological pigments that occur in two chemical forms, eumelanin and pheomelanin. In vertebrates, melanin synthesis normally takes place in epidermal melanocytes using dihydroxyphenylalanine as a precursor, but in human catecholaminergic neurons the precursor is dopamine and leads to neuromelanin. Here authors report for the first time that an insect (grasshopper) synthesizes pheomelanin. It does so using dopamine as the main precursor, thus producing a pigment homologous to the pheomelanic moiety of human neuromelanin. The production of this moiety involves neurotoxic intermediates that have been linked to Parkinson's disease. informacion[at]ebd.csic.es: Galván et al (2015) Insects synthesize pheomelanin. Pigment Cell Melanoma Res DOI: 10.1111/pcmr.12397


http://onlinelibrary.wiley.com/doi/10.1111/pcmr.12397/abstract