Elkin Yofan Suarez-Villota

Elkin Yofan Suarez-Villota
Universidad de las Américas (Chile) | UDLA · Instituto de Ciencias Naturales

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27
Publications
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205
Citations
Citations since 2017
17 Research Items
164 Citations
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Publications

Publications (27)
Article
Full-text available
Cerradomys is a genus of the tribe Oryzomyini with eight species currently recognized, and a controversial taxonomy. These species are mainly distributed in the South America dry diagonal, but some species extend into Atlantic Forest, reaching the coastal sandy plains known as Restingas. This study aimed to address species limits and patterns of di...
Article
Full-text available
Smooth-shelled blue mussels, Mytilus spp., have a worldwide antitropical distribution and are ecologically and economically important. Mussels of the Mytilus edulis species complex have been the focus of numerous taxonomic and biogeographical studies, in particular in the Northern hemisphere, but the taxonomic classification of mussels from South A...
Article
Full-text available
Some skin secretions with adhesive properties allow frogs to distract predators and escape; their nature is poorly studied. Here, we report the sticky skin secretion released by the Patagonian frog Eupsophus vertebralis when stressed. This secretion contained ~ 50% proteins spanning 25–250 kDa and required a fast setting time to turn into strong ad...
Article
Background The evolutionary history of southern South American organisms has been strongly influenced by Pleistocene climate oscillations. Amphibians are good models to evaluate hypotheses about the influence of these climate cycles on population structure and diversification of the biota, because they are sensitive to environmental changes and hav...
Article
Full-text available
South American frogs of the genus Eupsophus Fitzinger, 1843 comprise 10 species. Two of them, Eupsophus vertebralis Grandison, 1961 and E. emiliopugini Formas, 1989 belong to the Eupsophus vertebralis group, exhibiting 2n = 28. Fundamental number differences between these species have been described using conventional chromosome staining of few spe...
Article
Full-text available
The alsodid ground frogs of the Eupsophus genus are divided into two groups, the roseus (2n = 30) and vertebralis (2n = 28), which are distributed throughout the temperate Nothofa-gus forests of South America. Currently, the roseus group is composed by four species, while the vertebralis group consists of two. Phylogenetic relationships and species...
Data
Sampling locations of Eupsophus species. Coordinates, sample size (N), corresponding species according to Frost [35] and map number from Fig 1 are indicated. Species used as outgroup are also listed (gray cells). (DOC)
Data
Sites characterization, partitioning schemes, and nucleotide substitution models for sequences used in this study. Conservative (C), variable (V), informative (I) and total sites for each marker are indicated. Partitioning schemes and nucleotide substitution models were determined using Partitionfinder, version 2.1.1 [56]. (DOC)
Data
Taxonomic index of congruence (Ctax) calculated for each pair of approaches. Mean of all the Ctax values obtained involving a given approach (Mean Ctax) and total number of species supported by each approach (sp.) is indicated. Species delimitation approaches: Bayesian General Mixed Yule Coalescent model (bGMYC), multi-rate Poisson Tree Processes (...
Data
Likelihood scores and Akaike’s information criterion (AIC) results for STEM analysis (see Carstens and Dewey [18]). Species delimitation scenarios for Eupsophus species are indicated in Fig 4A. Species number (sp.), Log-likelihood of the species tree (−lnL), number of parameters (k), AIC, AIC difference (Δi), the relative likelihood of model given...
Data
Bayes factor delimitation results. Marginal likelihood (MLE) and Bayes factor estimates for species delimitation scenarios indicated in Fig 4A. Species number (sp.) as well as values using path (PS) and stepping-stone (SS) sampling are indicated. (DOC)
Data
Maximum likelihood trees using A) mitochondrial (D-loop, Cytb, and COI) and B) nuclear (POMC and CRYBA1) sequences. Bayesian analyses recovered similar topologies in both cases. Support values (bootstrap and posterior probabilities) are shown above branches. Blue arrows indicate lineages 1 and 8 shown in Fig 2, red arrow indicates a clade supported...
Data
Automatic Barcode Gap Discovery (ABGD) results using A) COI and B) concatenated (D-loop, Cytb, COI, POMC and CRYBA1) datasets. (DOCX)
Article
Full-text available
The long-recognized monotypic status of the relictual marsupial genus Dromiciops was recently challenged by a controversial reanalysis of previously published mtDNA data that were combined with a new morphological study to conclude that the genus contains 3 species: D. bozinovici, D. mondaca, and D. gliroides. We present here new phylogenetic and c...
Article
Full-text available
We report the sequencing and compare the mitochondrial genomes of the South American ground frogs Eupsophus vertebralis and E. emiliopugini and reconstruct phylogenetic relationships among Eupsophus species. These genomes consist of 16,156 and 16,711 bp in length, respectively and contain 13 protein-coding genes, two ribosomal RNA genes, 22 transfe...
Article
Full-text available
Oecomys is a genus of Neotropical arboreal rodents composed of 17 species with diploid number ranging from 2n = 54 to 86. Despite this high taxonomic and karyotypic diversity, the species-level systematics remains uncertain. We investigated the phylogenetic relationships and species delimitation of Oecomys using multiple approaches based on cytogen...
Article
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Background Morphological divergences of snake retinal structure point to complex evolutionary processes and adaptations. The Colubridae family has a remarkable variety of retinal structure that can range from all-cone and all-rod to duplex (cone/rod) retinas. To explore whether nocturnal versus diurnal activity is responsible for constraints on mol...
Article
Full-text available
Background The low-numbered 14-chromosome karyotype of marsupials has falsified the fusion hypothesis claiming ancestrality from a 22-chromosome karyotype. Since the 14-chromosome condition of the relict Dromiciops gliroides is reminecent of ancestrality, its interstitial traces of past putative fusions and heterochromatin banding patterns were stu...
Article
Full-text available
Characidium gomesi Travasso, 1956 specimens from the Pardo River have up to four heterochromatic supernumerary chromosomes, derived from the sex chromosomes. To access the meiotic behavior and distribution of an active chromatin marker, males and females of Characidium gomesi with two or three B chromosomes were analyzed. Mitotic chromosomes were c...
Article
Full-text available
Unlike the X chromosome, the mammalian Y chromosome undergoes evolutionary decay resulting in small size. This sex chromosomal heteromorphism, observed in most species of the fossorial rodent Ctenomys, contrasts with the medium-sized, homomorphic acrocentric sex chromosomes of closely related C. maulinus and C. sp. To characterize the sequence comp...
Article
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The recently described taxon Drymoreomys albimaculatus is endemic to the Brazilian Atlantic Forest and its biology and genetics are still poorly known. Herein, we present, for the first time, the karyotype of the species using classical and molecular cytogenetics, which showed 2n=62, FN=62, and interstitial telomeric signals at the sex chromosomes....
Article
Full-text available
The allotetraploid Tympanoctomys barrerae has a broad, patchy distribution around salt flats in western Argentina. To gain insights into its phylogenetic relationships, phylogeographical patterns, and origin, seven populations of T. barrerae and its allied taxa were studied through a 1075‐bp fragment of cytochrome b and cytochrome oxidase I. Matril...
Article
Full-text available
Great genome size (GS) variations described in desert-specialist octodontid rodents include diploid species ( Octomys mimax and Octodontomys gliroides ) and putative tetraploid species ( Tympanoctomys barrerae and Pipanacoctomys aureus ). Because of its high DNA content, elevated chromosome number, and gigas effect, the genome of T. barrerae is cla...
Article
Full-text available
A rapid survey for assessing the composition and structure of a bat community present in a semi-urban ecological park, Northwestern Colombia, was carried out from March to May 2005. Five biotopes: wetland, secondary rain forest, wetland, acacia plantation and pasture were assessed, totaling 368 hours/net. We collected 17 bat species belonging to fi...

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