the wild at the last remaining site by 1995. A single individual known from this population survived in captivity until 1999. Other populations have become established in the UK and it is known that some of these included individuals of British origin in their founding stock." An English Nature reintroduction project is underway in Breckland, where pool frogs were introduced to a single site in 2005. Hybridogenesis The edible frog Pelophylax kl. esculentus is a hybridogenetic hybrid of the pool frog Pelophylax lessonae and the marsh frog P. ridibundus. Its populations are maintained however through other crossings by hybridogenesis. References External links BBC News article on the reintroduction Species page at the Herpetological Conservation Trust website Movie with sound Youtube Pelophylax Amphibians of Europe Amphibians described in 1882 Taxa named by Lorenzo Camerano