Our study, the largest broad-scale assessment of MeHg bioaccumulation in amphibians, highlights methodological advances that allow for nonlethal sampling of rare species and reveals immense variation among species, life histories, and sites. Our findings can help identify sensitive populations and provide environmentally relevant concentrations for future studies to better quantify the potential threats of MeHg to amphibians. Leer más.


Around 2004, a poison dart frog resembling the polka dot poison dart frog Oophaga arborea was smuggled into the European pet trade. The striking animal had yellow dots characteristic of the species and caused a sensation. Part of the excitement is because Oophaga arborea is a critically endangered species is from a very small known distribution where it inhabits bromeliads in the tree canopies.  Leer más.