Endemism, invasion, and overseas dispersal: the phylogeographic history of the Lesser Antillean frog, Eleutherodactylus johnstonei

Abstract Cryptogenic species are those whose native and introduced ranges unknown. The extent long history of human migration rendered numerous cryptogenic. Incomplete knowledge regarding the origin habitat a poses problems for conservation management may confound ecological evolutionary studies. Lesser Antilles pose particular challenge with regard to cryptogenic because these islands have been anthropogenically connected since before recorded history. Here, we use population genetic phylogeographic tools in an attempt determine Eleutherodactylus johnstonei , frog potentially widespread range within is Based on elevated estimates diversity within-island geographic structure not present elsewhere range, identify Montserrat as island E. . We also document two major clades only one which primary source populations throughout Americas. Our results demonstrate utility resolving highlight potential system understanding differences invasive among sister lineages.