Bridging the gap: A new species of arboreal Abronia (Squamata: Anguidae) from the Northern Highlands of Chiapas, Mexico

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

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Phylogenetics of Ogyges Kaup and the biogeography of Nuclear Central America (Coleoptera, Passalidae)

ZooKeys, Год журнала: 2018, Номер 737, С. 81 - 111

Опубликована: Фев. 13, 2018

A phylogenetic morphological analysis of the genus Ogyges Kaup, distributed in Nuclear Central America, from Chiapas, Mexico, to northwestern Nicaragua was undertaken. Five species Proculejus north Isthmus Tehuantepec were selected as outgroup. recovered monophyletic with three groups: championi, laevissimus, and crassulus. Each group shows a distinct, generally allopatric distribution. The O. championi group, ten species, is Maya block, more specifically mountainous system Motozintla-Comaltitlán fault dry valleys Cuilco Motagua rivers Guatemala. two remaining groups are Chortis block. laevissimus including seven ranges mostly along Pacific Volcanic Chain Guatemala El Salvador, southeastern Honduras area Nicaragua. crassulus northeastern (Merendón) northern Honduras. Motagua-Cuilco sutures zones Chiapas Guatemala, lowland Colón Comalí between (or, perhaps, suture Siuna Terrane Nicaragua), Guayape Honduras, intricate Ulúa-Chamelecón-Olancho hypothesized have acted barriers that affected geographical distribution Ogyges, well probably other montane organisms.

Язык: Английский

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Descriptions of five new species of the salamander genusChiropterotriton(Caudata: Plethodontidae) from eastern Mexico and the status of three currently recognized taxa

PeerJ, Год журнала: 2020, Номер 8, С. e8800 - e8800

Опубликована: Май 26, 2020

The genus Chiropterotriton is endemic to Mexico with a geographical distribution along the Sierra Madre Oriental, Trans Mexican Volcanic Belt and de Juárez. recent use of molecular tools has shown that Mexico’s amphibian diversity highly underestimated, including large number cryptic, unnamed species. 18 described species terrestrial, arboreal cave-dwelling In previous studies, presence multiple undescribed was evident. We present phylogenetic hypothesis based on mitochondrial data, which includes all six taxa. Based morphological analyses and, when available, combined we describe five new genus; casasi sp. nov., C. ceronorum melipona perotensis nov. totonacus addition, redescribe two others: chiropterus orculus , provide comparable account one additional sympatric congener. This increases in 23, represent considerable component plethodontid richness.

Язык: Английский

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Amphibian species richness and endemism in tropical montane cloud forests across the Neotropics

Biodiversity and Conservation, Год журнала: 2021, Номер 31(1), С. 295 - 313

Опубликована: Ноя. 25, 2021

Язык: Английский

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The Geography of Speciation in Neotropical Salamanders

Herpetologica, Год журнала: 2017, Номер 73(3), С. 229 - 241

Опубликована: Июль 31, 2017

Geography plays a paramount role in many aspects of speciation, including the amount morphological and niche variation expected between sister species. Current species distributions, when coupled with phylogenies, offer valuable information on likely modes geographic speciation. I briefly review past studies geography speciation neotropical plethodontid salamanders analyze spatial distributions climatic overlap this group. Using 66 pairs distributed from Mexico to Ecuador, find that vicariant allopatric probably played dominant divergence bolitoglossines, but peripatric parapatric were also important generating high diversity no evidence for latitudinal mechanisms within tropics. Future incorporating physiology, modeling, population genetic estimates demographic parameters will be critical determining importance these nonvicariant implications tropical biodiversity general.

Язык: Английский

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Origins and biogeography of the Anolis crassulus subgroup (Squamata: Dactyloidae) in the highlands of Nuclear Central America

BMC Evolutionary Biology, Год журнала: 2017, Номер 17(1)

Опубликована: Дек. 1, 2017

Recent studies have begun to reveal the complex evolutionary and biogeographic histories of mainland anoles in Central America, but origins relationships many taxa remain poorly understood. One such group is Anolis (Norops) crassulus species subgroup, which contains ten morphologically similar highland taxa, majority restricted distributions. The nominal taxon A. has a disjunct distribution from Chiapas, Mexico, through Guatemala, highlands El Salvador, Chortís Highlands Honduras. We test these using multiple mitochondrial nuclear loci concatenated multispecies coalescent frameworks, an effort both resolve long-standing taxonomic confusion present new insights into evolution biogeography taxa. Sequences were generated for eight subgroup. analyzed phylogenetic estimated divergence times ancestral ranges recovering monophyletic subgroup within Anolis. Within crassulus, we recovered genetically distinct lineages corresponding allopatric populations, show that Highland lineage split others over 13 MYA. Additionally, are heteropholidotus morazani, importantly, samples sminthus previously used major anole analyses not as conspecific with those infer origin ancestor this estimate cladogenesis began approximately 22 Our results provide evolution, biogeography, timing diversification disjunctly distributed sensu lato represents several conserved, molecularly anoles, other contain isolated lineages.

Язык: Английский

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A conservation checklist of the amphibians and reptiles of Sonora, Mexico, with updated species lists

ZooKeys, Год журнала: 2019, Номер 829, С. 131 - 160

Опубликована: Март 11, 2019

Sonora has a rich natural diversity, including reptiles and amphibians. Sonora's location on the United States-Mexico border creates some unique conservation challenges for its wildlife. We compiled list of amphibian reptile species currently known Sonora, summarized status these species, compared our with lists adjacent states. The herpetofauna comprises 200 amphibians (38 162 reptiles). Overall, shares most Chihuahua, Sinaloa, Arizona. Approximately 11% are IUCN listed, but 35.5% placed in protected category by SEMARNAT, 32.6% categorized as high risk Environmental Vulnerability Score.

Язык: Английский

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Analysis of intrinsic evolutionary factors leading to microendemic distributions in New Caledonian leaf beetles

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Апрель 27, 2023

Abstract Microendemicity, or the condition of some species having local ranges, is a relatively common pattern in nature. However, factors that lead to this are still largely unknown. Most studies addressing issue tend focus on extrinsic associated with microendemic distributions, such as environmental conditions, hypothesising posteriori about underlying potential speciation mechanisms, linked not these conditions. Here, we use multi-faceted approach mostly focusing intrinsic instead, namely diversification dynamics and modes two endemic sibling genera leaf beetles Taophila Tricholapita , microendemicity hotspot, New Caledonia. Results suggest rate lineage slowed down through most Neogene consistently protracted model possibly combined several ecological potentially adding rate-slowing effects time. In turn, accumulated following successive allopatric cycles, powered by marked geological climatic changes region last 25 million years, daughter ranges uncorrelated time speciation. case, seems reflect mature state for system, rather than temporary recent species, suggested many organisms.

Язык: Английский

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Small Mammals from Three Mountain Ranges in Nuclear Central America

Annals of Carnegie Museum, Год журнала: 2016, Номер 83(4), С. 269 - 285

Опубликована: Авг. 1, 2016

Small mammal ecology and natural history are poorly known in Nuclear Central America. In an effort to gain information on small mammals (insectivorans, marsupials, rodents), we sampled three cloud forest habitats mountain ranges Honduras (Cerro Celaque Sierra de Agalta) Guatemala (Sierra las Minas). were collected using removal trapping. A total of 789 specimens representing 23 species was recorded from seven trapping sites. Trapping varied among sites, with a 18,117 trap nights recorded. We describe the habitat at each site, report diversity, relative abundance, sex ratios, reproductive activity, other collected. general, forests contained different communities mammals. only species, Heteromys desmarestianus Gray, 1862, Peromyscus oaxacensis Merriam, 1898, Scotinomys teguina (Alston, 1877), all ranges.

Язык: Английский

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Extensive species diversification and marked geographic phylogenetic structure in the Mesoamerican genus

Invertebrate Systematics, Год журнала: 2022, Номер 36(1), С. 1 - 21

Опубликована: Янв. 4, 2022

The Jerusalem cricket subfamily Stenopelmatinae is distributed from south-western Canada through the western half of United States to as far south Ecuador. Recently, generic classification this was updated contain two genera, North American Ammopelmatus, and Mexican, central northern South Stenopelmatus. taxonomy latter genus also revised, with 5, 13 14 species being respectively validated, declared nomen dubium described new. Despite effort, systematics Stenopelmatus still complete. Here, we generated sequences mitochondrial DNA barcoding locus performed distinct sequence-based approaches assess species’ limits among several populations Stenopelmatus, emphasis on south-east Mexico. We reconstructed phylogenetic relationships representative main clades within using nuclear 3RAD data carried out a molecular clock analysis investigate its biogeographic history. consistently recovered 34 putative species, which are apparently undescribed. Our estimates phylogeny confirmed recent update revealed marked phylogeographic structure Based our results, propose existence four species-groups (the faulkneri, talpa, Central America piceiventris species-groups). geographic distribution these congruent geological processes that took place in mountain ranges along southern Mexico, particularly since Neogene. study emphasises necessity continue performing more taxonomic studies clarify actual richness evolutionary history Mesoamerica.

Язык: Английский

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