Diversity of teiid lizards from Gran Chaco and Western Cerrado (Squamata: Teiidae)

The Gran Chaco dry forest ecoregion corresponds to the southern portion of the South America diagonal belt of open formations, being one of the most threatened subtropical woodland savannas in the world. The area is still poorly known biologically and has been suffering with impressively high forest...

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Veröffentlicht in:Zoologica scripta 2018-03, Vol.47 (2), p.144-158
Hauptverfasser: Arias, Federico José, Recoder, Renato, Álvarez, Blanca Beatriz, Ethcepare, Eduardo, Quipildor, Matias, Lobo, Fernando, Rodrigues, Miguel Trefaut
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container_end_page 158
container_issue 2
container_start_page 144
container_title Zoologica scripta
container_volume 47
creator Arias, Federico José
Recoder, Renato
Álvarez, Blanca Beatriz
Ethcepare, Eduardo
Quipildor, Matias
Lobo, Fernando
Rodrigues, Miguel Trefaut
description The Gran Chaco dry forest ecoregion corresponds to the southern portion of the South America diagonal belt of open formations, being one of the most threatened subtropical woodland savannas in the world. The area is still poorly known biologically and has been suffering with impressively high forest cover loss in the last 10 years. Integrating morphological and molecular data, we detected and describe a cryptic new species of lizard genus Ameivula endemic from the eastern part of this ecoregion, the called Humid Chaco. Ameivula apipensis sp nov. is characterised by a whitish brown vertebral stripe in adults and juveniles, a lateral field without ocelli and with overlapping spot, presence of an interfrontoparietal scale in 46.2% of the specimens, 12–17 femoral pores, an hemipenis without lateral sac, five xiphisternal ribs, and by a combination of meristic features as confirmed by discriminant analysis. The new species was recovered sister to a clade from Western Cerrado in our analysis, the first phylogenetic hypothesis for the Ameivula and Glaucomastix genera based on 1977 base pairs of three mitochondrial (12S, 16S and cyt‐b) and one nuclear (c‐mos) genes, including all the recognised species at the moment. Maximum parsimony and Bayesian inference recovered the monophyly of Ameivula and Glaucomastix with strong support. Reinforcing previous studies, our results suggest the presence of additional cryptic species in Ameivula from the Western Cerrado.
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subjects Adults
Ameivula
Base pairs
Bayesian analysis
Chaco and Cerrado region
Cryptic species
Discriminant analysis
Dry forests
Endemic species
Femur
Forests
Genes
Glaucomastix
Juveniles
Lizards
Meristic counts
Mitochondrial DNA
New species
Ocelli
Phylogeny
Probability theory
Savannahs
Statistical inference
Teiidae
Threatened species
Vertebrae
Woodlands
title Diversity of teiid lizards from Gran Chaco and Western Cerrado (Squamata: Teiidae)
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