Before revision: PNAS 96:10741-10745 This complex situation does not fit well within the biological species concept of Ernst Mayr which defines a species is defined as "groups of actually or potentially interbreeding natural populations which are reproductively isolated from other such groups".
After revision: PNAS 96:10741-10745 This complex situation does not fit well within the biological species concept of Ernst Mayr which defines a species as "groups of actually or potentially interbreeding natural populations which are reproductively isolated from other such groups".