Resolving the higher-order phylogenetic relationships of the circumtropical Mabuya group (Squamata: Scincidae): An out-of-Asia diversification

Karin, Benjamin R.; Metallinou, Margarita; Weinell, Jeffrey L.; Jackman, Todd R.; Bauer, Aaron M.

doi:10.1016/j.ympev.2016.05.033

Cited by 52 publications

(64 citation statements)

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“…Previous studies have suggested that the split between this clade and the African Mabuyinae (genus Trachylepis ) occurred from 28 to 34 Ma (Hedges & Conn, 2012; Karin et al, 2016). Additionally, the age of the last common ancestor (LCA) of the CAM was dated at 7–9 Ma (Carranza & Arnold, 2003; Pinto-Sanchez et al, 2015) and 11–14 Ma (Miralles & Carranza, 2010; Hedges & Conn, 2012; Karin et al, 2016). Considering the present-day Atlantic Ocean currents, Mausfeld et al (2002) suggested that T. atlantica could have dispersed from the coast of Southwest Africa to South America, but no work to date has comprehensively evaluated this hypothesis.…”

Section: Introductionmentioning

confidence: 95%

“…The new Mabuyidae consisted of four new subfamilies: Mabuyinae, Chioniniinae, Dasiinae and Trachylepidinae. Hedges and Conn’s arrangement disregarded many genera previously related to Mabuyinae, such as Eutropis , Lankaskincus , and Ristella (Pyron, Burbrink & Wiens, 2013), and recent papers have questioned this classification (e.g., Pyron, Burbrink & Wiens, 2013; Pinto-Sanchez et al, 2015; Karin et al, 2016). Recently, alternative classifications were suggested.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, alternative classifications were suggested. For instance, Karin et al (2016) placed the Middle-Eastern Trachylepis ( T. aurata , T. vittatus , and T. septemtaeniatus ) into the genus Heremites and Eutropis novemcarinata into Toenayar novemcarinata . Moreover, Pinto-Sanchez et al (2015) assigned species from the genera Maracaiba and Alinea back to genus Mabuya and Metallinou et al (2016) reclassified Trachylepis ivensii as Lubuya ivensii.…”

Section: Introductionmentioning

confidence: 99%

“…However, estimates of divergence times within the Mabuyinae have been hampered by the lack of fossils for Mabuyinae, which made previous researchers rely on evolutionary rates borrowed from the literature (e.g., Carranza & Arnold, 2003; Miralles & Carranza, 2010; Lima et al, 2013; Barker et al, 2015; Karin et al, 2016) or to employ biogeographic events as calibrations (Hedges & Conn, 2012; Pinto-Sanchez et al, 2015) to derive the timescale of this lineage. The fossil record, however, has been demonstrated to be much more informative than biogeographic events as a calibration tool (Heads, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Arrival and diversification of mabuyine skinks (Squamata: Scincidae) in the Neotropics based on a fossil-calibrated timetree

Pereira

Schrago

2017

PeerJ

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BackgroundThe evolution of South American Mabuyinae skinks holds significant biogeographic interest because its sister lineage is distributed across the African continent and adjacent islands. Moreover, at least one insular species, Trachylepis atlantica, has independently reached the New World through transoceanic dispersal. To clarify the evolutionary history of both Neotropical lineages, this study aimed to infer an updated timescale using the largest species and gene sampling dataset ever assembled for this group. By extending the analysis to the Scincidae family, we could employ fossil information to estimate mabuyinae divergence times and carried out a formal statistical biogeography analysis. To unveil macroevolutionary patterns, we also inferred diversification rates for this lineage and evaluated whether the colonization of South American continent significantly altered the mode of Mabuyinae evolution.MethodsA time-calibrated phylogeny was inferred under the Bayesian framework employing fossil information. This timetree was used to (i) evaluate the historical biogeography of mabuiyines using the statistical approach implemented in BioGeoBEARS; (ii) estimate macroevolutionary diversification rates of the South American Mabuyinae lineages and the patterns of evolution of selected traits, namely, the mode of reproduction, body mass and snout–vent length; (iii) test the hypothesis of differential macroevolutionary patterns in South American lineages in BAMM and GeoSSE; and (iv) re-evaluate the ancestral state of the mode of reproduction of mabuyines.ResultsOur results corroborated the hypothesis that the occupation of the South American continent by Mabuyinae consisted of two independent dispersion events that occurred between the Oligocene and the Miocene. We found significant differences in speciation rates between the New World and the remaining Mabuyinae clades only in GeoSSE. The influence of phenotypic traits on diversification rates was not supported by any method. Ancestral state reconstruction suggested that the ancestor of South American mabuyine was likely viviparous.DiscussionOur analyses further corroborated the existence of a transoceanic connection between Africa and South America in the Eocene/Oligocene period (Atlantogea). Following colonization of the isolated South America and subsequent dispersal through the continent by the ancestral mabuyine stock, we detected no difference in macroevolutionary regimes of New World clades. This finding argued against the ecological opportunity model as an explanation for the diversity of living mabuyines.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Arrival and diversification of mabuyine skinks (Squamata: Scincidae) in the Neotropics based on a fossil-calibrated timetree

Pereira

Schrago

2017

PeerJ

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“…Recent studies have investigated whether extreme matrotrophy in Mabuyinae evolved independently, or if two, or all three of these lineages shared a common ancestor with extreme matrotrophy [8,10]. However, T. ivensii has not previously been included in any phylogenetic study [13][14][15]. Therefore, the evolution of extreme matrotrophy has been unclear.…”

Section: Introductionmentioning

confidence: 99%

A single origin of extreme matrotrophy in African mabuyine skinks

et al. 2016

Self Cite

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Most mammals and approximately 20% of squamates (lizards and snakes) are viviparous, whereas all crocodilians, birds and turtles are oviparous. Viviparity evolved greater than 100 times in squamates, including multiple times in Mabuyinae (Reptilia: Scincidae), making this group ideal for studying the evolution of nutritional patterns associated with viviparity. Previous studies suggest that extreme matrotrophy, the support of virtually all of embryonic development by maternal nutrients, evolved as many as three times in Mabuyinae: in Neotropical Mabuyinae (63 species), Eumecia (2 species; Africa) and Trachylepis ivensii (Africa). However, no explicit phylogenetic hypotheses exist for understanding the evolution of extreme matrotrophy. Using multilocus DNA data, we inferred a species tree for Mabuyinae that implies that T. ivensii (here assigned to the resurrected genus Lubuya) is sister to Eumecia, suggesting that extreme matrotrophy evolved only once in African mabuyine skinks.

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Hemipenial morphology of nine South American species of Mabuya (Scincidae: Lygosominae) with comments on the morphology of the family

Sánchez‐Martínez

Ramírez‐Pinilla²,

Meneses-Pelayo

et al. 2019

The Anatomical Record

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Species of the genus Mabuya are barely recognizable because of their highly conservative external morphology, resulting in unstable systematic and taxonomic status. Considering that hemipenial morphology has been extensively used as a source of systematic information for several groups of Squamata, we described the hemipenial morphology of nine species of Mabuya, searching for diagnostic features useful to taxonomic and systematic studies. To have comparative parameters within the family, we also presented the description of the hemipenes of two other Scincidae species (i.e., Trachylepis atlantica and Tiliqua rugosa). This information, together with the available literature, was analyzed in a comparative framework, allowing us to define some variation for the genus and family. The hemipenial morphology of the species of Mabuya studied is very conservative; features that show subtle variation were the shape of the protuberances present on the asulcate face of the hemipenial body and the presence and type of a lateral fold, on the body. Also, within the family, some variation was found in the shape and length of lobes, length of branches of the sulcus spermaticus, and in the kind of folds and protuberances in both faces of the lobes and hemipenial body. Although these features were not tested in a systematic context, this information suggested variations in hemipenial morphology that could contribute to taxonomic diagnostics and phylogenetic characters. The importance of obtaining proper preparations for gathering accurate information is emphasized, and the use of fresh-killed specimens that shows fewer difficulties for the procedures of preparation is highly recommended.

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Resolving the higher-order phylogenetic relationships of the circumtropical Mabuya group (Squamata: Scincidae): An out-of-Asia diversification

Cited by 52 publications

References 56 publications

Arrival and diversification of mabuyine skinks (Squamata: Scincidae) in the Neotropics based on a fossil-calibrated timetree

Arrival and diversification of mabuyine skinks (Squamata: Scincidae) in the Neotropics based on a fossil-calibrated timetree

A single origin of extreme matrotrophy in African mabuyine skinks

Hemipenial morphology of nine South American species of Mabuya (Scincidae: Lygosominae) with comments on the morphology of the family

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