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Genetic diversity feeds the evolutionary process and allows populations to adapt to environmental changes. However, we still lack a thorough understanding of why hotspots of genetic diversity are so ‘hot’. Here, we analysed the relative contribution of bioclimatic stability and genetic admixture between divergent lineages in shaping spatial patterns of genetic diversity in the common toad Bufo bufo along the Italian peninsula. We combined population genetic, phylogeographic and species distribution modelling (SDM) approaches to map ancestral areas, glacial refugia, and secondary contact zones. Leer más.

https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fs41598-020-79046-y/MediaObjects/41598_2020_79046_Fig1_HTML.png?as=webp

Biofluorescence is widespread in the natural world, but only recently discovered in terrestrial vertebrates. Here, we report on the discovery of iridophore-based, neon-green flourescence in the gecko Pachydactylus rangei, localised to the skin around the eyes and along the flanks. The maximum emission of the fluorescence is at a wavelength of 516 nm in the green spectrum (excitation maximum 465 nm, blue) with another, smaller peak at 430 nm. Leer más.

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Researchers have discovered that invasive brown tree snakes living on Guam can get around in a way that had never been seen before. The discovery of the snake’s lasso-like locomotion for climbing their way up smooth vertical cylinders has important implications, both for understanding the snakes and for conservation practices aimed at protecting birds from them. Leer más.

Los ocho documentales, de unos cinco minutos de duración cada uno y subtitulados en catalán, castellano e inglés, profundizan en las particularidades de esta especie tan enigmática que solo habita en el Parque Natural y Reserva de la Biosfera del Montseny (incluido en la Red Natura 2.000) y que está considerado el anfibio más amenazado de la Europa occidental. Se reflejan, entre otros aspectos, el funcionamiento de los centros de cría, la liberación de ejemplares, la investigación, las actuaciones para mejorar el hábitat, la problemática de las dolencias infecciones en anfibios o las acciones de educación ambiental. Leer más.

https://lifetritomontseny.eu/documents/107349215/128190266/documental+Girona.jpg/68bfe422-8f24-4266-bcd1-c71dee12b348?t=1594045907697