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A new species of Alopoglossus lizard (Squamata, Gymnophthalmidae) from the tropical Andes, with a molecular phylogeny of the genus.

Torres-Carvajal O, Lobos SE - Zookeys (2014)

Bottom Line: Cis-Andean [east of the Andes] and Trans-Andean [west of the Andes] species are nested in two separate clades, suggesting that the uplift of these mountains had an important effect in the diversification of Alopoglossus.In addition, we present an updated key to the species of Alopoglossus.Abstract available from the publisher.

View Article: PubMed Central - HTML - PubMed

Affiliation: Escuela de Biología, Pontificia Universidad Católica del Ecuador, Avenida 12 de Octubre y Roca, Apartado 17-01-2184, Quito, Ecuador.

ABSTRACT
We describe a new species of Alopoglossus from the Pacific slopes of the Andes in northern Ecuador based on morphological and molecular evidence. The new species differs most significantly from all other congeners in having a double longitudinal row of widened gular scales, lanceolate dorsal scales in transverse rows, 29-32 dorsal scales in a transverse row at midbody, and 4 longitudinal rows of ventrals at midbody. It is most similar in morphology to A. festae, the only species of Alopoglossus currently recognized in western Ecuador. We analyze the phylogenetic relationships among species of Alopoglossus based on the mitochondrial gene ND4. Cis-Andean [east of the Andes] and Trans-Andean [west of the Andes] species are nested in two separate clades, suggesting that the uplift of these mountains had an important effect in the diversification of Alopoglossus. In addition, we present an updated key to the species of Alopoglossus.

No MeSH data available.


Phylogeny of Alopoglossinae. Majority rule (50%) consensus tree of 36,000 trees obtained from a Bayesian analysis of the mitochondrial gene ND4 and 8 specimens. Asterisks correspond to posterior probability values ≥ 0.97. Voucher information is presented in Table 1.
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Figure 5: Phylogeny of Alopoglossinae. Majority rule (50%) consensus tree of 36,000 trees obtained from a Bayesian analysis of the mitochondrial gene ND4 and 8 specimens. Asterisks correspond to posterior probability values ≥ 0.97. Voucher information is presented in Table 1.

Mentions: Of the 596 nucleotide characters included in our analysis 290 were constant, 70 parsimony uninformative, and 236 were parsimony informative. Selected models of evolution were 012013+I+G+F, TPM2uf+I+G, and 010220+I+G+F for ND4 partitions codon 1, 2, and 3, respectively. The resulting 50% majority rule consensus tree (Fig. 5) supports strongly (PP=1) the monophyly of Alopoglossinae (i.e., Ptychoglossus and Alopoglossus) and Alopoglossus. Within Alopoglossus there is a basal split into two strongly supported (PP=1) clades, one containing trans-Andean taxa (Alopoglossus festae and Alopoglossus viridiceps sp. n.), and the other including cis-Andean taxa (Alopoglossus angulatus, Alopoglossus atriventris, Alopoglossus buckleyi, and Alopoglossus copii). Within the cis-Andean clade, Alopoglossus angulatus and Alopoglossus copii are recovered as sister species with maximum support (PP=1), forming a clade sister to Alopoglossus atriventris (PP=0.84); Alopoglossus buckleyi is sister to all other cis-Andean species (Fig. 5).


A new species of Alopoglossus lizard (Squamata, Gymnophthalmidae) from the tropical Andes, with a molecular phylogeny of the genus.

Torres-Carvajal O, Lobos SE - Zookeys (2014)

Phylogeny of Alopoglossinae. Majority rule (50%) consensus tree of 36,000 trees obtained from a Bayesian analysis of the mitochondrial gene ND4 and 8 specimens. Asterisks correspond to posterior probability values ≥ 0.97. Voucher information is presented in Table 1.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4042710&req=5

Figure 5: Phylogeny of Alopoglossinae. Majority rule (50%) consensus tree of 36,000 trees obtained from a Bayesian analysis of the mitochondrial gene ND4 and 8 specimens. Asterisks correspond to posterior probability values ≥ 0.97. Voucher information is presented in Table 1.
Mentions: Of the 596 nucleotide characters included in our analysis 290 were constant, 70 parsimony uninformative, and 236 were parsimony informative. Selected models of evolution were 012013+I+G+F, TPM2uf+I+G, and 010220+I+G+F for ND4 partitions codon 1, 2, and 3, respectively. The resulting 50% majority rule consensus tree (Fig. 5) supports strongly (PP=1) the monophyly of Alopoglossinae (i.e., Ptychoglossus and Alopoglossus) and Alopoglossus. Within Alopoglossus there is a basal split into two strongly supported (PP=1) clades, one containing trans-Andean taxa (Alopoglossus festae and Alopoglossus viridiceps sp. n.), and the other including cis-Andean taxa (Alopoglossus angulatus, Alopoglossus atriventris, Alopoglossus buckleyi, and Alopoglossus copii). Within the cis-Andean clade, Alopoglossus angulatus and Alopoglossus copii are recovered as sister species with maximum support (PP=1), forming a clade sister to Alopoglossus atriventris (PP=0.84); Alopoglossus buckleyi is sister to all other cis-Andean species (Fig. 5).

Bottom Line: Cis-Andean [east of the Andes] and Trans-Andean [west of the Andes] species are nested in two separate clades, suggesting that the uplift of these mountains had an important effect in the diversification of Alopoglossus.In addition, we present an updated key to the species of Alopoglossus.Abstract available from the publisher.

View Article: PubMed Central - HTML - PubMed

Affiliation: Escuela de Biología, Pontificia Universidad Católica del Ecuador, Avenida 12 de Octubre y Roca, Apartado 17-01-2184, Quito, Ecuador.

ABSTRACT
We describe a new species of Alopoglossus from the Pacific slopes of the Andes in northern Ecuador based on morphological and molecular evidence. The new species differs most significantly from all other congeners in having a double longitudinal row of widened gular scales, lanceolate dorsal scales in transverse rows, 29-32 dorsal scales in a transverse row at midbody, and 4 longitudinal rows of ventrals at midbody. It is most similar in morphology to A. festae, the only species of Alopoglossus currently recognized in western Ecuador. We analyze the phylogenetic relationships among species of Alopoglossus based on the mitochondrial gene ND4. Cis-Andean [east of the Andes] and Trans-Andean [west of the Andes] species are nested in two separate clades, suggesting that the uplift of these mountains had an important effect in the diversification of Alopoglossus. In addition, we present an updated key to the species of Alopoglossus.

No MeSH data available.