Genetic divergence of Chilean long-tailed snake (<i>Philodryas chamissonis</i>) across latitudes: conservation threats for different lineages

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dc.contributor.authorSallaberry-Pincheira, N.
dc.contributor.authorGarin, C. F.
dc.contributor.authorGonzalez-Acuna, D.
dc.contributor.authorSallaberry, M. A.
dc.contributor.authorVianna, J. A.
dc.date.accessioned2025-01-21T00:04:00Z
dc.date.available2025-01-21T00:04:00Z
dc.date.issued2011
dc.description.abstractAim
dc.description.abstractThe Chilean long-tailed snake (Philodryas chamissonis) has a wide distribution across different latitudes and ecosystems in Chile ranging from the south of the Atacama Desert (26 degrees S) to the extremely humid Valdivian temperate rain forest (40 degrees S). Throughout this vast distribution, which is isolated by the Andes mountain range on the east and the Pacific Ocean on the west, there are biogeographical boundaries and large geographical barriers that must have played an important role in the distribution of genetic diversity within this species. This study aimed at elucidating the evolutionary history of P. chamissonis in Chile by analysis of mitochondrial DNA sequences.
dc.description.abstractLocation
dc.description.abstractChile (29 degrees 41'-38 degrees 23' S).
dc.description.abstractMethods
dc.description.abstractWe extracted DNA from 66 tissue samples collected across different latitudes and amplified and sequenced the mitochondrial DNA control region and the NADH dehydrogenase subunit 4 gene for phylogenetic and population analysis.
dc.description.abstractResults
dc.description.abstractFour distinct haplogroups were identified for P. chamissonis. These are highly consistent with a latitudinal geographic pattern, different ecosystems and the increase in topography towards central Chile. Three of the four haplogroups are concentrated in central Chile (33 degrees S latitude) where the highest herpetofaunal diversity of the country is found. The Maipo River acts as historical geographical barrier for the species influenced by Pleistocene glaciation cycles, leading to a marked phylogeographical boundary. A strong population structure was found for the species (Theta(st) = 0.78, P < 0.0001), with a high haplotype diversity (h = 0.97 +/- 0.01) and nucleotide diversity (pi = 0.0151 +/- 0.0077).
dc.description.abstractMain conclusions
dc.description.abstractAt least three evolutionarily significant units (ESUs) were designated for the species, and these should be taken into account for conservation plans. Three of the four haplogroups found within P. chamissonis are already threatened because their distribution along central Chile overlaps with most of the largest cities in the country.
dc.description.funderCONYCIT-Chile
dc.fuente.origenWOS
dc.identifier.doi10.1111/j.1472-4642.2010.00729.x
dc.identifier.eissn1472-4642
dc.identifier.issn1366-9516
dc.identifier.urihttps://doi.org/10.1111/j.1472-4642.2010.00729.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95488
dc.identifier.wosidWOS:000285246700015
dc.issue.numero1
dc.language.isoen
dc.pagina.final162
dc.pagina.inicio152
dc.revistaDiversity and distributions
dc.rightsacceso restringido
dc.subjectConservation
dc.subjectevolutionarily significant unit (ESU)
dc.subjectgeographical barrier
dc.subjectPhilodryas chamissonis
dc.subjectphylogeography
dc.subjectsnake
dc.titleGenetic divergence of Chilean long-tailed snake (<i>Philodryas chamissonis</i>) across latitudes: conservation threats for different lineages
dc.typeartículo
dc.volumen17
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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