Imminent extinction in the wild of the world’s largest amphibian

摘要

Species with large geographic ranges are considered resilient to global decline . However, human pressures on biodiversity affect increasingly large areas, in particular across Asia, where market forces drive overexploitation of species . Range-wide threat assessments are often costly and thus extrapolated from non-representative local studies . The Chinese giant salamander (Andrias davidianus), the world’s largest amphibian, is thought to occur across much of China, but populations are harvested for farming as luxury food . Between 2013 and 2016, we conducted field surveys and 2,872 interviews in possibly the largest wildlife survey conducted in China. This extensive effort revealed that populations of this once-widespread species are now critically depleted or extirpated across all surveyed areas of their range, and illegal poaching is widespread.