Integrative species delimitation in practice: Revealing cryptic lineages within the short-nosed skink Plestiodon brevirostris (Squamata: Scincidae)

Pavón‐Vázquez, Carlos J.; García‐Vázquez, Uri Omar; Bryson, Robert W.; Fería-Ortíz, Manuel; Manríquez–Morán, Norma L.; de, Adrián Nieto‐Montes

doi:10.1016/j.ympev.2018.08.020

Cited by 20 publications

(10 citation statements)

References 107 publications

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“…About the MRCA of Rhadinaea and the first divergences of the main clades herein identified in the SMS during the Miocene (7.3–16.8 Ma) (Figure 5 ), we infer that these divergences could be due to the discontinuity of the pine–oak forests and cloud forests present in this biogeographical area to date (Rocha‐Méndez et al., 2019 ; Santiago‐Alvarado et al., 2016 ), which has experienced changes during similar times (Ornelas et al., 2010 , 2013 ). This mosaic‐like landscape has been associated with centers of diversification along elevational gradients and is believed to be closely related to some divergences between some vertebrate taxa (e.g., Chlorospingus [García‐Moreno et al., 2004 ], Eupherusa [Rocha‐Méndez et al., 2019 ], Plestiodon [Pavón‐Vázquez et al., 2018 ], Sarcohyla [Caviedes‐Solis & Leaché, 2018 ]) within the SMS, probably as a consequence of the climatic changes during the Miocene that produced a long‐term cooling interrupted by warm intervals, especially the middle Miocene climatic optimum (MCO) (17–14 Ma; Zachos, 2001 ). These divergences predate the diversification of all species inside the Eastern and southern clades and point toward a close relationship between the habitat preferences of the majority of the species of Rhadinaea as a primarily montane genus associated with pine–oak and humid forests (García‐Vázquez, Pavón‐Vázquez, et al., 2018 ; Myers, 1974 ), and the heterogeneity of the SMS (Bryson et al., 2017 ; Luna‐Vega et al., 1999 ; Santiago‐Alvarado et al., 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…Finally, as to the vicariant events involving some of the species present in both Eastern and southern clades, we attribute these divergences to different processes such as soft allopatry through ecological vicariance (Pyron & Burbrink, 2010 ), given nonidentical lineage ranges of R. gaigeae and R. quinquelineata in the SMOr, and the action of lowland barriers inside these biogeographical regions, such as river drainages of the Río Grande and the Río Santa Catarina (Pavón‐Vázquez et al., 2018 ) in the case of the divergence between R. myersi and R. omiltemana in the SMS. These analyses are enlightening about the geographic origin and timing of most of the Rhadinaea species divergences and point toward an origin of the genus more related to the woodland dynamics in the SMS than other proposed biogeographical barriers present in southeastern Mexico such as the IT and ND.…”

Section: Discussionmentioning

confidence: 99%

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Historical biogeography of the genusRhadinaea(Squamata: Dipsadinae)

García-Sotelo

García‐Vázquez

Espinosa

2021

Ecology and Evolution

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Multiple geological and climatic events have created geographical or ecological barriers associated with speciation events, playing a role in biological diversification in North and Central America. Here, we evaluate the influence of the Neogene and Quaternary geological events, as well as the climatic changes in the diversification of the colubrid snake genus Rhadinaea using molecular dating and ancestral area reconstruction. A multilocus sequence dataset was generated for 37 individuals of Rhadinaea from most of the biogeographical provinces where the genus is distributed, representing 19 of the 21 currently recognized species, and two undescribed species. Our analyses show that the majority of the Rhadinaea species nest in two main clades, herein identified as “Eastern” and “Southern”. These clades probably diverged from each other in the early Miocene, and their divergence was followed by 11 divergences during the middle to late Miocene, three divergences during the Pliocene, and six divergences in the Pleistocene. The ancestral distribution of Rhadinaea was reconstructed across the Sierra Madre del Sur. Our phylogenetic analyses do not support the monophyly of Rhadinaea. The Miocene and Pliocene geomorphology, perhaps in conjunction with climate change, appears to have triggered the diversification of the genus, while the climatic changes during the Miocene probably induced the diversification of Rhadinaea in the Sierra Madre del Sur. Our analysis suggests that the uplifting of the Trans‐Mexican Volcanic Belt and Chiapan–Guatemalan highlands in this same period resulted in northward and southward colonization events. This was followed by more recent, independent colonization events in the Pliocene and Pleistocene involving the Balsas Basin, Chihuahuan Desert, Pacific Coast, Sierra Madre Occidental, Sierra Madre Oriental, Sierra Madre del Sur, Trans‐Mexican Volcanic Belt, and Veracruz provinces, probably driven by the climatic fluctuations of the time.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Historical biogeography of the genusRhadinaea(Squamata: Dipsadinae)

García-Sotelo

García‐Vázquez

Espinosa

2021

Ecology and Evolution

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“…Overall, the number of Gulf of Mexico Haustorius and Lepidactylus OTUs ranges from 6–8, which is 2–4 more species than are morphologically recognized in the Gulf of Mexico. Future work on haustoriid amphipods will require a more integrative taxonomic approach (e.g., Padial, Miralles, De la Riva, & Vences, ; Pavón‐Vázquez et al, ) including genetic data, environmental and ecological variables, fine‐scale microstructural differences, and mate preference to adequately designate cryptic lineages (or OTUs) as species.…”

Section: Discussionmentioning

confidence: 99%

Phylogeography of sand‐burrowing amphipods (Haustoriidae) supports an ancient suture zone in the Gulf of Mexico

Hancock

Hardin

Light

2019

Journal of Biogeography

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Aim To evaluate the impact of a proposed ancient suture zone in the Gulf of Mexico on the distribution and molecular diversity of dispersal‐limited, sand‐burrowing amphipods of the genera Haustorius and Lepidactylus (Haustoriidae: Amphipoda). Location Gulf of Mexico, USA and Mexico. Methods Phylogenetic and population genetic analyses were performed using mitochondrial (COI and 16S) and nuclear (18S and 28S) data from 93 amphipod individuals from 16 sites across the Gulf of Mexico. Bayesian and ML phylogenies were constructed for all genes, divergence times were estimated using a molecular clock for COI (0.007–0.013 subs./site per Myr), and four species delimitation methods were used to identify operational taxonomic units (OTUs) within each amphipod species. The mitochondrial COI gene was used to construct haplotype networks and estimate population genetic parameters to evaluate historical changes in effective population sizes. Results Deep divergences (most estimated to be >4 Ma) were uncovered between sister clades of both amphipod genera on either side of the Mississippi River as well as within Lepidactylus triarticulatus where each sample site was found to harbour a unique genetic lineage. Two cryptic OTUs of L. triarticulatus were identified living sympatrically at Pass Christian, Mississippi. Two distinct OTUs representing western and eastern Haustorius galvezi clades were identified along the Texas and Mexico coastlines with abutting ranges. Population genetic results show some support for recent population expansions for western Gulf OTUs, while eastern Gulf OTUs may have suffered population bottlenecks in the past. Main conclusions Divergences between sister species of sand‐burrowing amphipods exceeds the timing of previous vicariant hypotheses. The split appears to be consistent with Miocene sedimentation levels from the Mississippi River acting as an east–west barrier to gene flow in the Gulf of Mexico. Given their strong population structure and cryptic diversity, haustoriid amphipods are ideal model organisms for studying open coast biogeography.

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“…Previamente, la población de escíncidos de los alrededores de San Juan del Valle, Puebla, estaba asignada a la subespecie Plestiodon brevirostris brevirostris (Dixon et al, 1969), sin embargo, 42 años más tarde Feria-Ortiz et al (2011) y Brandley et al (2012) elevaron este taxón a nivel de especie (P. brevirostris). No obstante, en un trabajo más reciente, en el cual usaron datos moleculares, morfológicos y ambientales, Pavón-Vázquez et al (2018), reevaluaron el estado taxonómico de esta especie y encontraron que realmente representaba cuatro especies distintas, dos distribuidas en el estado de Oaxaca, una el estado de Guerrero y otra (la que incluye a la población estudiada) en los estados de México, Tlaxcala y Puebla. Pavón-Vázquez et al (2018) no describieron ni nombraron a estas especies.…”

Section: Especie Bajo Estudiounclassified

DIMORFISMO SEXUAL EN TAMAÑO Y FORMA EN UNA POBLACIÓN DE ESCÍNCIDOS DE COLA AZUL DEL GÉNERO Plestiodon (SCINCIDAE)

Ortíz¹,

Pérez-Malváez

Escutia³

et al. 2021

Acta biol. Colomb.

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En este estudio, investigamos el dimorfismo sexual en el tamaño corporal (longitud hocico cloaca) y rasgos morfológicos (cabeza, cuello, tronco y extremidades) en una población de escíncidos pertenecientes a una especie recién descubierta del género Plestiodon. Además, se determinaron las trayectorias alométricas de los rasgos corporales que mostraron dimorfismo sexual y se discute su importancia en la expresión de las diferencias sexuales encontradas. Se realizó una prueba de t de student para detectar diferencias significativas en la LHC y se siguió un enfoque multivariado para investigar el dimorfismo sexual en los otros caracteres examinados. Se utilizó regresión por ejes principales reducidos (SMA) para determinar las trayectorias alométricas correspondientes. No se detectó dimorfismo sexual en la longitud hocico cloaca y masa corporal. La longitud y ancho de la cabeza, la longitud del cuello y la longitud de las extremidades traseras fueron mayores en machos que en hembras; en contraste, se encontró el patrón opuesto en el caso de la longitud del tronco (axila-ingle). Se detectaron relaciones isométricas, así como alométricas positivas y negativas entre los rasgos analizados. Sin embargo, únicamente el dimorfismo sexual en el ancho de la cabeza fue afectado por sus trayectorias de crecimiento.

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Integrative species delimitation in practice: Revealing cryptic lineages within the short-nosed skink Plestiodon brevirostris (Squamata: Scincidae)

Cited by 20 publications

References 107 publications

Historical biogeography of the genusRhadinaea(Squamata: Dipsadinae)

Historical biogeography of the genusRhadinaea(Squamata: Dipsadinae)

Phylogeography of sand‐burrowing amphipods (Haustoriidae) supports an ancient suture zone in the Gulf of Mexico

DIMORFISMO SEXUAL EN TAMAÑO Y FORMA EN UNA POBLACIÓN DE ESCÍNCIDOS DE COLA AZUL DEL GÉNERO Plestiodon (SCINCIDAE)

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