Donald Varela Soto, guía naturalista de Bijagua, iba caminando por el humedal de la reserva biológica Valle del Tapir cuando escuchó un canto inusual. Encontró una hermosa rana verde brillante marcada con una franja y manchas de color marrón rojizo y con una piel totalmente transparente. Leer más.
À l’issue de 6 années de projet, les équipes du programme européen LIFE CROAA ont synthétisé, dans un guide de gestion, les meilleures techniques pour le suivi et la gestion de la Grenouille taureau (Lithobates catesbeianus) et du Xénope lisse (Xenopus laevis). Leer más.
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In Croaking Science (July, 2022), I introduced the topic of the international trade in wildlife, and then focused on reptiles. This article is a companion piece, concentrating on amphibians. It will cover the frogs’ legs and pet trades, discussing their impact on wild amphibian populations, disease spread and amphibian welfare. As I was researching the topic, an excellent report on the frogs’ legs trade appeared (Altherr et al., 2022), and I have drawn heavily from it. Leer más.
Hey kids, if you are between the ages of 4 and 8, and if you like to draw or paint, then sharpen your crayons and wash your paintbrushes, because it’s time to whip up a new masterpiece and enter Froglife’s ‘Draw an Adder’ competition! Leer más.
In support of hyperoxia representing a constraint, we found that lizards transplanted to the novel oxygen environment of low elevation exhibited decreased thermal preferences and that the thermal performance curve for sprint speed shifted, resulting in lower performance at high body temperatures. While the effects of hypoxia on thermal physiology are well-explored, few studies have examined the effects of hyperoxia in an ecological context. Our study suggests that high-elevation specialists may be hindered in such novel oxygen environments and thus constrained in their capacity for downslope migration. Leer más.
