Historical biogeography of the genusRhadinaea(Squamata: Dipsadinae) DOI Creative Commons
Uriel A. García‐Sotelo, Uri Omar García‐Vázquez, David Espinosa

и другие.

Ecology and Evolution, Год журнала: 2021, Номер 11(18), С. 12413 - 12428

Опубликована: Авг. 5, 2021

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

Язык: Английский

Morphological and molecular analyses of mountain centipede snake (Serpentes: Tantilla) reveal a new species from Venezuelan Andes DOI Creative Commons

Luis Felipe Esqueda,

Fernando J. M. Rojas‐Runjaic, Claudio Correa

и другие.

Academia Biology, Год журнала: 2025, Номер 3(1)

Опубликована: Март 14, 2025

The highest elevations of the Tropical Andes form an archipelago sky islands, where herpetological diversity is actively evolving. In this study, we combined morphological and molecular data to discover describe a new snake species colubrid genus Tantilla from middle-upper basin Boconó River on lacustrine slope Cordillera de Mérida. This belongs melanocephala phenotypic group. Our results align with previously published data, indicating that Andean populations diverged lowland ancestral lineage originating Guiana Shield northern Brazil during Miocene (~8 million years ago [Myr]). Morphologically, distinguished other members by its three longitudinal black stripes, presence two pale spots parietals instead nuchal band, noncontacting prefrontal supralabial scales, first pair infralabial scales typically separated (rarely in contact), 138–145 ventral males, <60 subcaudal 12 maxillary teeth moderate diastema anterior process bone, unilobed, unicalyculate, noncapitated hemipenis. We discuss validity certain available names zoogeographic patterns northernmost distribution. Furthermore, our study provides evidence suggesting richness may be underestimated mountainous regions South America, allopatric speciation driven topographic complexity niche conservatism has likely played crucial role genotypic divergence centipede populations.

Язык: Английский

Процитировано

0

Taxonomic status and sexual dimorphism of the brown forest skink, Scincella cherriei stuarti (Smith 1941) (Squamata: Scincidae) DOI
A. L. V. Toscano de Brito, Uri Omar García‐Vázquez

Zootaxa, Год журнала: 2025, Номер 5601(1), С. 109 - 126

Опубликована: Март 5, 2025

We analyzed the molecular and morphological variation of scincid lizard Scincella cherriei stuarti in order to reassess its taxonomic status. Our phylogenetic analyses recovered as a strongly supported monophyletic group. Furthermore, our analysis we found sexual dimorphism color pattern limb size S. cherrei stuarti, combination that was previously undocumented for entire genus. Owing suite diagnosable external characters monophyly, suggest elevating species level. offer redescription taxon accommodate noted dimorphism, also update geographic distribution.

Язык: Английский

Процитировано

0

Bridging the gap: A new species of arboreal Abronia (Squamata: Anguidae) from the Northern Highlands of Chiapas, Mexico DOI Creative Commons
Adam G. Clause, Roberto Luna-Reyes, Oscar Miguel Mendoza Velázquez

и другие.

PLoS ONE, Год журнала: 2024, Номер 19(1), С. e0295230 - e0295230

Опубликована: Янв. 3, 2024

The mountain forests of Middle America are renowned for their endemic biodiversity, and arboreal alligator lizards (genus Abronia ) high-profile vertebrates to this region. In work, we describe a new species that is known only from the type locality in Northern Highlands Chiapas, Mexico. diagnosed all other members genus by following combination characters: lack protuberant or spine-like supra-auricular scales, casque-like posterolateral head dorsum pale yellow with distinct dark markings, 35–39 transverse dorsal scale rows, lateralmost row ventral scales enlarged relative adjacent medial row, brown darker crossbands sometimes reduced rows spots. We provisionally include subgenus Lissabronia based on genomic morphological evidence, but our results also suggest close relationship Abaculabronia . geographically separated nearest lowland Central Depression Chiapas. Ongoing habitat loss factors imperil species, leading us propose its listing under multiple threatened frameworks. Because have poor coverage protected areas, briefly comment potential stimulating conservation

Язык: Английский

Процитировано

2

Phylotranscriptomic and ecological analyses reveal the evolution and morphological adaptation of Abies DOI
Zhou‐Rui Wei,

D. Y. Jiao,

Christian Wehenkel

и другие.

Journal of Integrative Plant Biology, Год журнала: 2024, Номер 66(12), С. 2664 - 2682

Опубликована: Авг. 16, 2024

Coniferous forests are under severe threat of the rapid anthropogenic climate warming. Abies (firs), fourth-largest conifer genus, is a keystone component boreal and temperate dark-coniferous harbors remarkably large number relict taxa. However, uncertainty phylogenetic biogeographic history significantly impedes our prediction future dynamics efficient conservation firs. In this study, using 1,533 nuclear genes generated from transcriptome sequencing complete sampling all widely recognized species, we have successfully reconstructed robust phylogeny global firs, in which four clades strongly supported intersectional relationships resolved, although discordance caused mainly by incomplete lineage sorting hybridization was detected. Molecular dating ancestral area reconstruction suggest Northern Hemisphere high-latitude origin during Late Cretaceous, but extant firs diversified Miocene to Pleistocene, multiple continental intercontinental dispersals took place response late Neogene cooling orogenic movements. Notably, critically endangered endemic subtropical mountains China, including A. beshanzuensis, ziyuanensis, fanjingshanensis yuanbaoshanensis east west, different origins evolutionary histories. Moreover, three hotspots species richness, western North America, central Japan, Hengduan Mountains, were identified Abies. Elevation precipitation, particularly precipitation coldest quarter, most significant environmental factors driving distribution pattern fir diversity. Some morphological traits evolutionarily constrained, those linked elevational variation (e.g., purple cone) cold resistance pubescent branch resinous bud) may contributed diversification Our study sheds new light on spatiotemporal evolution will be great help forest management warming world.

Язык: Английский

Процитировано

2

Sixty years of Halffter’s Mexican Transition Zone: a systematic review using bibliometric tools DOI Creative Commons
Margarita M. López‐García, Juan J. Morrone

Revista Mexicana de Biodiversidad, Год журнала: 2023, Номер 94, С. e945114 - e945114

Опубликована: Май 24, 2023

The Mexican Transition Zone (MTZ) has become a key concept that promoted the consolidation of an integrative field research. We reviewed scientific publications on MTZ with bibliometric tools to detect trends through time and analyze conceptual structure historiographic citation. also performed content analysis considering conceptualization MTZ, application Halffter’s patterns distribution, different disciplines where term been used. number per year not constant, but since 2012 there general increase, becoming frequently cited in papers some cases constituting research topic. identified divergences discussed implications for biogeographic studies. inspired other authors produce focused this area set hypotheses redefine make it applicable its incorporation biogeographical regionalization Americas.

Язык: Английский

Процитировано

4

Historical biogeography of the genusRhadinaea(Squamata: Dipsadinae) DOI Creative Commons
Uriel A. García‐Sotelo, Uri Omar García‐Vázquez, David Espinosa

и другие.

Ecology and Evolution, Год журнала: 2021, Номер 11(18), С. 12413 - 12428

Опубликована: Авг. 5, 2021

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

Язык: Английский

Процитировано

5