Pre-Holocene Origin for the Coronopus navasii Disjunction: Conservation Implications from Its Long Isolation.

摘要: Integration of unexpected discoveries about charismatic species can disrupt their well-established recovery plans, particularly when this requires coordinate actions among the different governments responsible. The Critically Endangered Coronopus navasii (Brassicaceae) was considered a restricted endemism to few Mediterranean temporary ponds in high mountain range Southeast Spain, until new group populations were discovered 500 km North 2006. Ten years after finding, its management has not been accommodated due limited information and administrative inertia. In study, DNA sequences distribution models are used analyse origin C. disjunction as preliminary step reassess plan. Molecular results placed during Miocene-Pleistocene (6.30-0.49 Mya, plastid DNA; 1.45-0.03 ribosomal DNA), which discards putative human-mediated origin. fact, haplotype network low gene flow estimated between disjunct areas suggest long-term isolation. Dispersal is most likely explanation for interpreted from highly fragmented projected past. Particularly, northward dispersal proposed since connected sister-group through southern haplotype. Although reassessment conservation status more optimistic under extent occurrence, survival may be compromised the: (1) natural fragmentation rarity habitat, (2) genetic isolation two areas, (3) shift suitable future climate change scenarios. Several ex-situ in-situ measures integrating Central East Spanish into on-going plan, still only contemplates therefore does preserve structure diversity species.