2005
A cryptic taxon of Galpagos tortoise in conservation peril
Russello M, Glaberman S, Gibbs J, Marquez C, Powell J, Caccone A. A cryptic taxon of Galpagos tortoise in conservation peril. Biology Letters 2005, 1: 287-290. PMID: 17148189, PMCID: PMC1617146, DOI: 10.1098/rsbl.2005.0317.Peer-Reviewed Original ResearchConceptsBiological diversityFormal taxonomic designationGenetic divergenceGalápagos tortoisesAccurate taxonomyDistinct lineagesTaxonomic investigationGenetic divisionTaxonomic designationsSingle taxonGiant tortoisesBad taxonomyEvolutionary heritageNew taxonTaxaAccessible islandsTortoisesHuman intellectual historyDiversityConservationSanta CruzTaxonomyLineagesGalápagosOrganisms
2004
Giant tortoises are not so slow: Rapid diversification and biogeographic consensus in the Galápagos
Beheregaray L, Gibbs J, Havill N, Fritts T, Powell J, Caccone A. Giant tortoises are not so slow: Rapid diversification and biogeographic consensus in the Galápagos. Proceedings Of The National Academy Of Sciences Of The United States Of America 2004, 101: 6514-6519. PMID: 15084743, PMCID: PMC404076, DOI: 10.1073/pnas.0400393101.Peer-Reviewed Original ResearchConceptsGiant Galápagos tortoisesGalápagos tortoisesGreat natural laboratoryGenetic variationDivergent monophyletic cladesHistory of diversificationIsolated oceanic archipelagoPatterns of colonizationBiogeographic predictionsEvolutionary diversificationGene flowEndemic haplotypesExtant populationsLimited dispersalOceanic archipelagosBiogeographic patternsEvolutionary eventsBiological diversificationMonophyletic cladeMtDNA sequencesRapid diversificationGenetic interchangeRange expansionOlder islandsGiant tortoises
2003
The origin of captive Galápagos tortoises based on DNA analysis: implications for the management of natural populations
Burns C, Ciofi C, Beheregaray L, Fritts T, Gibbs J, Márquez C, Milinkovitch M, Powell J, Caccone A. The origin of captive Galápagos tortoises based on DNA analysis: implications for the management of natural populations. Animal Conservation 2003, 6: 329-337. DOI: 10.1017/s1367943003003408.Peer-Reviewed Original ResearchNatural populationsMtDNA haplotypesCaptive individualsMtDNA control region haplotypesDistinct mtDNA haplotypesControl region haplotypesMultilocus microsatellite genotypesCaptive breeding programsSpecies management plansNumber of breedersLonesome GeorgeCharles Darwin Research StationCR haplotypesEvolutionary originGalápagos tortoisesIsland populationsMicrosatellite genotypesRegion haplotypesGiant tortoisesGalápagos IslandsGalápagos ArchipelagoGeographic originMolecular techniquesHaplotypesCaptive tortoises
1999
Origin and evolutionary relationships of giant Galápagos tortoises
Caccone A, Gibbs J, Ketmaier V, Suatoni E, Powell J. Origin and evolutionary relationships of giant Galápagos tortoises. Proceedings Of The National Academy Of Sciences Of The United States Of America 1999, 96: 13223-13228. PMID: 10557302, PMCID: PMC23929, DOI: 10.1073/pnas.96.23.13223.Peer-Reviewed Original ResearchGiant Galápagos tortoisesLonesome GeorgeGalápagos tortoisesDistinct genetic unitsMitochondrial DNA sequencesMainland South AmericaSouth AmericaEvolutionary relationshipsPhylogenetic reconstructionSeparate colonizationsSouthern subspeciesPinta IslandChaco tortoisesDNA sequencesGalápagos IslandsClosest livingG. chilensisGenetic unitsSubspeciesCharles DarwinTortoisesLarge islandsSan CristobalChilensisLast survivor