Show simple item record

Are the native giant tortoises from the Seychelles really extinct? A genetic perspective based on mtDNA and microsatellite data.

dc.contributor.author Palkovacs, EP
dc.contributor.author Marschner, M
dc.contributor.author Ciofi, C
dc.contributor.author Gerlach, J
dc.contributor.author Caccone, A
dc.coverage.spatial England
dc.date.accessioned 2013-04-16T16:37:55Z
dc.date.issued 2003-06
dc.identifier https://www.ncbi.nlm.nih.gov/pubmed/12755870
dc.identifier 1834
dc.identifier.issn 0962-1083
dc.identifier.uri https://hdl.handle.net/10161/6530
dc.description.abstract The extinction of the giant tortoises of the Seychelles Archipelago has long been suspected but is not beyond doubt. A recent morphological study of the giant tortoises of the western Indian Ocean concluded that specimens of two native Seychelles species survive in captivity today alongside giant tortoises of Aldabra, which are numerous in zoos as well as in the wild. This claim has been controversial because some of the morphological characters used to identify these species, several measures of carapace morphology, are reputed to be quite sensitive to captive conditions. Nonetheless, the potential survival of giant tortoise species previously thought extinct presents an exciting scenario for conservation. We used mitochondrial DNA sequences and nuclear microsatellites to examine the validity of the rediscovered species of Seychelles giant tortoises. Our results indicate that the morphotypes suspected to represent Seychelles species do not show levels of variation and genetic structuring consistent with long periods of reproductive isolation. We found no variation in the mitochondrial control region among 55 individuals examined and no genetic structuring in eight microsatellite loci, pointing to the survival of just a single lineage of Indian Ocean tortoises.
dc.language eng
dc.publisher Wiley
dc.relation.ispartof Mol Ecol
dc.subject Animals
dc.subject DNA Primers
dc.subject DNA, Mitochondrial
dc.subject Genetic Variation
dc.subject Geography
dc.subject Microsatellite Repeats
dc.subject Population Dynamics
dc.subject Seychelles
dc.subject Species Specificity
dc.subject Turtles
dc.title Are the native giant tortoises from the Seychelles really extinct? A genetic perspective based on mtDNA and microsatellite data.
dc.type Journal article
duke.contributor.id Palkovacs, EP|0513338
pubs.author-url https://www.ncbi.nlm.nih.gov/pubmed/12755870
pubs.begin-page 1403
pubs.end-page 1413
pubs.issue 6
pubs.organisational-group Duke
pubs.organisational-group Marine Science and Conservation
pubs.organisational-group Nicholas School of the Environment
pubs.publication-status Published
pubs.volume 12


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record