Molecular systematics of Caribbean skinks of the genus<i>Mabuya</i>(Reptilia, Scincidae), with descriptions of two new species from Venezuela

Miralles, Aurélien; Fuenmayor, Gilson Rivas; Bonillo, Céline; Schargel, Walter E.; Barros, Tito R.; García-Pérez, Juan E.; Barrio-Amorós, César L.

doi:10.1111/j.1096-3642.2008.00487.x

Cited by 24 publications

(10 citation statements)

References 30 publications

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“…The latter clade is weakly supported as the sister group to a clade containing Chioninia , Eumecia , and Mabuya . In Mabuya , a few species ( M. altamazonica , M. bistriata , and M. nigropuncata ) have unorthodox placements within a monophyletic Mabuya , potentially due to uncertain taxonomic assignment of specimens by previous authors [51,122]. The genus Lygosoma is paraphyletic with respect to Lepidothyris and Mochlus , and many of the relevant nodes are strongly supported (Figure 10).…”

Section: Resultsmentioning

confidence: 93%

A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes

2013

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BackgroundThe extant squamates (>9400 known species of lizards and snakes) are one of the most diverse and conspicuous radiations of terrestrial vertebrates, but no studies have attempted to reconstruct a phylogeny for the group with large-scale taxon sampling. Such an estimate is invaluable for comparative evolutionary studies, and to address their classification. Here, we present the first large-scale phylogenetic estimate for Squamata.ResultsThe estimated phylogeny contains 4161 species, representing all currently recognized families and subfamilies. The analysis is based on up to 12896 base pairs of sequence data per species (average = 2497 bp) from 12 genes, including seven nuclear loci (BDNF, c-mos, NT3, PDC, R35, RAG-1, and RAG-2), and five mitochondrial genes (12S, 16S, cytochrome b, ND2, and ND4). The tree provides important confirmation for recent estimates of higher-level squamate phylogeny based on molecular data (but with more limited taxon sampling), estimates that are very different from previous morphology-based hypotheses. The tree also includes many relationships that differ from previous molecular estimates and many that differ from traditional taxonomy.ConclusionsWe present a new large-scale phylogeny of squamate reptiles that should be a valuable resource for future comparative studies. We also present a revised classification of squamates at the family and subfamily level to bring the taxonomy more in line with the new phylogenetic hypothesis. This classification includes new, resurrected, and modified subfamilies within gymnophthalmid and scincid lizards, and boid, colubrid, and lamprophiid snakes.

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Section: Resultsmentioning

confidence: 93%

A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes

2013

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“…Recent molecular studies focusing on these different genera have shown that most of the taxa alleged to be common species with wide geographic distributions were actually constituted by complexes of several cryptic or pseudo-cryptic species with relatively restricted allopatric distributions (Datta-Roy et al 2012;Hedges & Conn 2012;Miralles et al 2009, Miralles & Carranza 2010Sindaco et al 2012). These observations led us to investigate herein the molecular differentiation within two Madagascar-endemic species of Trachylepis that are among the most widespread and common Malagasy reptiles, namely, T. elegans (Peters) and T. gravenhorstii (Duméril & Bibron).…”

Section: Introductionmentioning

confidence: 99%

DNA barcoding assessment of genetic variation in two widespread skinks from Madagascar, Trachylepis elegans and T. gravenhorstii (Squamata: Scincidae)

Vences¹,

Lima²,

Miralles³

et al. 2014

Zootaxa

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Trachylepis elegans and T. gravenhorstii are two of the most widespread reptiles in Madagascar, inhabiting a wide variety of habitats. Previous studies have indicated a considerable mitochondrial DNA (mtDNA) variation within these species, but the geographic distribution of the major haplotype lineages is poorly known. Herein we analyse the phylogeography of these lizards based on 107 sequences of the mitochondrial cytochrome oxidase subunit I gene, 101 of which newly determined. As in previous mtDNA assessments, T. elegans and T. gravenhorstii were not reciprocally monophyletic, although recent analyses including nuclear markers indicated their probable monophyly, respectively. The main lineages within T. gravenhorstii were found in strict allopatry and could be divided into a subclade of roughly northern and eastern distribution (lineages 1 and 2) and a subclade of roughly southern and western distribution (lineages 3, 4a, 4b, and 5, plus T. elegans). Our data serve to identify more precisely the probable contact zones among T. gravenhorstii lineages. The two main mtDNA clades (represented by lineages 2 and 3, respectively) can be expected to come into close contact in the area of the upper Mangoro river and Alaotra Lake, and (lineages 2 and 4a) in the Southern Central East between Mananjary and Ranomafana. Future studies intensively sampling these contact zones have the potential to assess hybridization and admixture among these lineages, and to test whether they are deep conspecific lineages of T. gravenhorstii as currently understood, or might represent distinct species.

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“…Further, they suggest the presence of cryptic species, although further sampling would be required to confirm this possibility. Also, Miralles et al (2009) studying the phylogeny of the Caribbean skinks (Mabuya), a genus with a wide altitudinal distribution, found a new species (Mabuya zuliae) on the lowlands of the Maracaibo lake basin, West of the MA, in the general area where we sampled tegu lizards. On the other hand, Vargas-Ramírez et al (2013) found no molecular differences on populations of the turtle Rhinoclemmys on either side of the Andes but the taxonomy remains unchanged because of the allopatric and parapatric distribution of the genus and the species Rhinoclemmys melanosterna, as well as the caryological and morphological differences.…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, there is evidence that both barriers have affected the genetic structure and/or the distribution of several taxa, including capybaras (Mones, 1991), bats (Romero, 2003), snakes (Schargel, Fuenmayor, Barros, Péfaur, & Navarrete, 2007;Scartozzoni, Trevine, & Germano, 2010), lizards (Miralles et al, 2009;Stephen, Reynoso, Collett, Hasbun, & Breinholt, 2013), turtles (Vargas-Ramírez et al, 2012, Vargas-Ramírez, Carr, & Fritz, 2013 and birds (Pereira & Baker, 2004). Using these conditions, both the Paleogeographic and the Riverine hypothesis can be tested.…”

mentioning

confidence: 99%

Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations.

Ripoll

Herrera

Arrivillaga

2015

RBT

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Tupinambis teguixin, the common tegu, is the only species of the genus found in Venezuela. It is distributed in different bioregions in the Neotropics, some of them separated by geographic barriers that may restrict gene flow among populations. Thus, to assess this possibility, we tested the Paleogeographic hypothesis and the Riverine hypothesis for the divergence among populations. To this end, we evaluated the degree of genetic structuring in six populations of T. teguixin from Venezuela, plus one from Brazil and one from Ecuador. We used two molecular datasets, one with the populations from Venezuela (Venezuela dataset, 1 023 bp) and one including the other two (South America dataset, 665 bp), with 93 and 102 concatenated sequences from cytochrome b and ND4, and 38/37 haplotypes. We used three measures of genetic diversity: nucleotide diversity, haplotype diversity and number of polymorphic sites. Gene flow was estimated with the statistic Φ ST and paired F ST values. We also constructed a haplotype network. We found genetic structuring with (1) Φ ST = 0.83; (2) high paired F ST estimates (0.54 -0.94); (3) haplotype networks with a well-defined geographic pattern; and (4) a single shared haplotype. The genetic structure does not seem to stem from geographic distance (r = 0.282, p = 0.209), but rather the product of an historic biogeographic event with the Mérida Andes and the Orinoco River (71.2 % of the molecular variance) as barriers. We propose the Zulia population as an Evolutionary Significant Unit and that the other populations be temporarily considered Management Units, pending further data. Populations Delta and Guri should form a single Management Unit since they share a haplotype. Rev. Biol. Trop. 63 (4): 1235-1249. Epub 2015 December 01.Key words: geographic barriers, mitochondrial DNA, population genetics, population structure, Tupinambis teguixin, Venezuela.The South American subcontinent harbors the greatest biological diversity on Earth and its origin is usually attributed to historical factors involving vicariant mechanisms or allopatric speciation. The main hypotheses are: the Refuge hypothesis, the Gradient hypothesis, the Disturbance-vicariance hypothesis, the Paleogeography hypothesis, and the River or Riverine hypothesis (Haffer, 1997;Moritz, Patton, Schneider, & Smith, 2000), with the latter two being the most frequently tested. The Paleogeography hypothesis considers changes in the relative distribution of land, sea or landscape as a result of tectonic movements (e.g., mountains rising) or sea level fluctuations as major factors in the distribution of species in the Neotropics (Haffer, 1997). For instance, a number of studies have shown the impact of the rise of the Andes Cordillera on the dispersal of individuals of the same or different species, by assessing the genetic structure of populations on both sides of the Andes and/or by describing their restricted distributions due to the barrier (Mones, 1991;Brumfield & Capparella, 1996;Arrivillaga, Norris, Feliciangeli, & Lanzar...

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Molecular systematics of Caribbean skinks of the genusMabuya(Reptilia, Scincidae), with descriptions of two new species from Venezuela

Cited by 24 publications

References 30 publications

A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes

A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes

DNA barcoding assessment of genetic variation in two widespread skinks from Madagascar, Trachylepis elegans and T. gravenhorstii (Squamata: Scincidae)

Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations.

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