Following the invasion, tadpoles from invaded populations develop faster than those from non-invaded populations. This ontogenetic shift overwhelmed the intraspecific variation between populations in a few generations, to the point where invaded populations develop at a similar rate regardless of climate. Rapid development can have costs, as fast-developing froglets have a smaller body size and poorer jumping performance, but compensatory growth counteracts some costs of development acceleration. Leer más.


A paper published today in Oryx—The International Journal of Conservation outlines the development of a multi-participatory binational conservation strategy for Darwin’s frogs (Rhinoderma spp.), an initiative that was led by ASG’s Chile Regional Working Group. These two frog species, found in the temperate forests of Chile and Argentina, display an unusual behaviour not known in any other amphibian – the adult male frogs take the eggs into their vocal sac, where they grow, protected, into tadpoles and young froglets. Leer más.