• Journals
  • Discipline
  • Indexed
  • Institutions
  • About
JavaScript is disabled for your browser. Some features of this site may not work without it.
View Item 
  •   Home
  • Universidad de Concepción
  • Gayana
  • View Item
  •   Home
  • Universidad de Concepción
  • Gayana
  • View Item

A multivariate analysis of taxonomic limits in Diplolaemus Bell 1843

Author
Victoriano,Pedro F

Coronado,Tanía M

Ortiz,Juan Carlos

Full text
https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-65382010000100006
Abstract
The gemís Diplolaemus Bell, 1843 is a common squamate component of the Patagonian región of South América. Considerable taxonomic confusión exists within this gemís, particularly about the status of Chilean-Andean populations and the actual distribution of D. leopardinas (Werner, 1898). In an attempt to clarify the taxonomic status and distribution of Diplolaemus species, we performed a principal component analysis (PCA) and discriminant function analysis (DFA) using both standard morphometric and meristic data. Multivariate summaries of morphometric data show that most species are poorly discriminated, with the exception of D. darwinii. In contrast, a PCA analyses performed on the meristic data clearly distinguish three discrete groups: 1. D. darwinii, 2. D. sexcinctus including the Chilean populations, and 3. populations from Mendoza, Argentina, including the holotype of D. leopardinus and of D. bibronii. A DFA consistently assigned with a high percentage of successful classifcation (95%) individuals of the species D. darwinii, D. sexcinctus, and D. bibronii. The group with lowest successful rate in the cross validation procedure (78%) was D. leopardinus (including populations from Mendoza), with misidentifcations assigned only to D. bibronii. The group formed by Mendoza populations and the holotype of D. leopardinus is visibly distinct from remaining D. bibronii in colour patterns. The holotype of D. leopardinus is clearly differentiated from the Chilean-Andean populations. Our results support the assignment of populations from Mendoza to D. leopardinus, and suggest that the Chilean-Andean populations currently assigned to this taxon should be referred as D. sexcinctus, together with populations from the Argentinean provinces of Río Negro and Neuquén.
Metadata
Show full item record
Discipline
Artes, Arquitectura y UrbanismoCiencias Agrarias, Forestales y VeterinariasCiencias Exactas y NaturalesCiencias SocialesDerechoEconomía y AdministraciónFilosofía y HumanidadesIngenieríaMedicinaMultidisciplinarias
Institutions
Universidad de ChileUniversidad Católica de ChileUniversidad de Santiago de ChileUniversidad de ConcepciónUniversidad Austral de ChileUniversidad Católica de ValparaísoUniversidad del Bio BioUniversidad de ValparaísoUniversidad Católica del Nortemore

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister
Dirección de Servicios de Información y Bibliotecas (SISIB) - Universidad de Chile
© 2019 Dspace - Modificado por SISIB