A5064884514- Amphibian and Reptile Biology
- Scarabaeidae Beetle Taxonomy and Biogeography
- Species Distribution and Climate Change
- Animal and Plant Science Education
- Animal Behavior and Reproduction
- Plant and animal studies
- Genetic diversity and population structure
- Genomics and Phylogenetic Studies
- Plant and soil sciences
- Transboundary Water Resource Management
- Primate Behavior and Ecology
- Conservation, Biodiversity, and Resource Management
- Lepidoptera: Biology and Taxonomy
- Animal Vocal Communication and Behavior
- Turtle Biology and Conservation
- Bat Biology and Ecology Studies
- Genetics, Bioinformatics, and Biomedical Research
- Evolution and Genetic Dynamics
- History and Politics in Latin America
- Study of Mite Species
- Environmental and sustainability education
- Physiological and biochemical adaptations
- Insect-Plant Interactions and Control
- Wildlife Conservation and Criminology Analyses
- Wildlife-Road Interactions and Conservation
Universidad Nacional de Colombia
2022-2024
Pontificia Universidad Javeriana
2021-2023
Royal Ontario Museum
2012-2020
University of Toronto
2012-2019
Universidade Federal do Rio Grande do Sul
2009-2017
Conservation International
2010
Abstract Riama is the most speciose genus of Neotropical lizard family Gymnophthalmidae. Its more than 30 montane species occur throughout northern Andes, Cordillera de la Costa ( CC ) in Venezuela, and Trinidad. We present comprehensive phylogenetic analysis to date based on a total evidence TE approach direct optimization molecular morphological evidence. Analyses use DNA sequences from four loci 35 phenotypic characters. The dataset consists 55 ingroup terminals representing 25 currently...
Nuclear and mitochondrial genomes coexist within cells but are subject to different tempos modes of evolution. Evolutionary forces such as drift, mutation, selection, migration expected play fundamental roles in the origin maintenance diverged populations; however, divergence may lag between inheritance functional specialization. Herein, we explore whole genome data thousands nuclear single nucleotide polymorphisms evidence extreme mito-nuclear discordance small black-tailed brush lizard,...
Se describe y nombra una nueva especie de anuro del género Atelopus la Cordillera Oriental Colombia. mittermeieri sp. nov. difiere resto las especies en por su particular color ventral, rojo encendido. El hallazgo población densa al parecer "saludable" resulta intrigante, ya que otras 3 registradas región no se han presentado observaciones recientes, lo cual hace temer un colapso sus poblaciones. reporte esta abre el camino para estudio conservación los sapitos arlequines
In democracies around the world, societies have demonstrated that elections can major consequences for environment. Colombia, 2022 presidential will take place at a time when progress towards peace has stalled and socioeconomic, security, environmental conditions deteriorated. The recent declines in these largely coincide with change of government after 2018 elections, associated rise to power party boycotted negotiations from beginning. These indicators suggest marked end decade...
Abstract The family Gymnophthalmidae is a highly diverse Neotropical lizard clade. Although multiple phylogenetic and taxonomic studies have reshaped our understanding of gymnophthalmid systematics diversity, many groups remain understudied. This the case for cercosaurine genus Echinosaura, which includes eight species small riparian lizards distributed across lower Central America northern South America. Here, we present comprehensive analysis including DNA data all first time. To...
Abstract Gymnophthalmids are a diverse lineage of Neotropical lizards that present challenges in the understanding their phylogenetic relationships and biogeographic history. Using densely sampled phylogeny distribution data, we investigated biogeography at family level. Dividing South Central America into 12 regions, tested six models considering dispersal-extinction, vicariance, founder events. Our analysis revealed high taxonomic endemism Andes, Amazon, Guiana Shield. The best-fit model...
A methodology is presented for the captive management of anuran larvae family Centrolenidae under controlled conditions. The importance to make and enhance this process as a useful tool describe compare centrolenid discussed.
Se describen las larvas de dos especies la familia Centrolenidae (Hyalinobatrachium ibama y Cochranella daidalea) procedentes del flanco occidental cordillera Oriental en el departamento Norte Santander, Colombia. En descripción larvas, además características morfológicas tradicionales, se incorporaron nuevos elementos juicio como longitud tubo cloacal, forma rostro, patrón color posición espiráculo, los cuales resultaron ser informativos muy útiles diferenciación especies. proporciona una...
We provide detailed descriptions of the poorly known advertisement calls Eleutherodactylus abbotti, E. flavescens and inoptatus, three rain frogs endemic to Caribbean island Hispaniola. compare these those closely related and/or geographically proximate species. The call abbotti lasts 0.5–6 s consists four notes that differ in amplitude duration, with a mean dominant frequency 4527 Hz. In turn, flavescens, Dominican Republic, 0.02–0.09 two different frequencies 2288 3025 contrast, inoptatus...
Anolis nigropunctatus is herein synonymized with jacare. We redescribe A. jacare on the basis of 40 specimens from Trujillo, Mérida and Táchira states in Venezuela as well Norte De Santander Colombia, thus greatly expanding known distribution species. describe anatoloros n. sp., a new species lizard Andes that closely related to This inhabits premontane wet forests eastern Andean piedmont Barinas, Portuguesa Trujillo likely vicariant The two differ dewlap body coloration certain details head...
Oreosaurus is one of the two genera extracted from former Riamasensu lato, which was recently recognized as polyphyletic. a small clade (five named and undescribed species) montane gymnophthalmid lizards exhibits an exceptional distributional pattern. Its nominal species are discontinuously distributed on Cordillera de la Costa Venezuela, tepuis Chimantá massif in highlands island Trinidad, Sierra Nevada Santa Marta Colombia (SNSM). Herein, we describe that endemic to SNSM. Historically,...
The island of Hispaniola (Dominican Republic and Haiti) is home to four endemic species treefrogs: Hypsiboas heilprini, Osteopilus dominicensis, O. pulchrilineatus vastus. These occur sympatrically over large areas below 1,850 m elevation are commonly encountered together. We redescribe the external larval morphology vastus, Hybsiboas describe tadpole for first time based on laboratory-reared specimens representing stages from early—late metamorphosis. Some tadpoles were raised adults in...
In this study, we provide detailed descriptions of the previously unknown advertisement calls Osteopilus dominicensis and Hypsiboas heilprini, as well a complete redescription that O. pulchrilineatus, three four hylid frogs known from Caribbean island Hispaniola. The call is composed single multi-pulsed note with mean dominant frequency 2058 Hz. contrast, pulchrilineatus consists two different pulsed notes (the second repeated many times in one call) 2950 2060 Hz, respectively. H. turn,...
I describe a new species of Riama from the Pacific versant Andes in extreme southwestern Colombia. Among Riama, most resembles R. vieta, with which it shares rugose dorsal and ventral scales. Unlike has three postoculars males lack heavy black spots dorsally bands ventrally. Males have seven to eight femoral pores per leg (total number 14–15) two scales between (anterior cloacal plate paired).
Following examination of recently collected and older specimens Riama from southern Ecuador, we report morphological variation in R. vespertina modify the species diagnosis description accordingly; furthermore, describe two new species, comment on additional diversity genus this region discuss some character-states, specially dorsal scale relief (specifically striated keeled conditions). We provide an identification key to occurring Ecuador.
We name and describe two new species of poison dart frogs the genus Dendrobates, from northeastern flank cordillera Central in departamentos de Tolima Caldas. Those share an exceptional synapomorphy within family, which consists a first toe reduced fused with second toe, allowing only four toes to be seen externally. Perhaps this unusual characteristic is reason create Dendrobatidae, however, must await period further investigation phylogeny these species, including molecular anatomic...
The Maracaibo false coral snake Erythrolamprus pseudocorallus, previously known only from Venezuela, is recorded five departments in Colombia. These new data include the westernmost and southernmost records presently for species. Two specimens identified as E. aesculapii, localities of El Valle, Distrito Federal, Yarumal, Antioquia, Colombia, are now attributed to first one representing northeasternmost record Morphological characterization pseudocorallus expanded based on specimens.
The poorly known Riama columbiana, Andean gymnophthalmid lizard from Colombia, is redescribed on the basis of syntypes and additional material. A lectotype designated, its likely provenience discussed, distribution natural history are given.
We describe Riama crypta, new species, from the western slopes of Cordillera Occidental, Ecuador. This taxon was formerly referred to as hyposticta, a rare species described on basis an adult male northern Ecuador and here recorded southwestern Colombia. The differs principally hyposticta by incomplete superciliary series, formed just anteriormost scale (superciliary series complete in R. five or six scales), no nasoloreal suture [= loreal absent] (complete present] hyposticta), distinct...
A new species of Glassfrog the genus Nymphargus from Andean cloud forest Cordillera Oriental, Colombia, is described. This can be recognized by some morphological characteristics that include: parietal peritoneum 1/2–3/4 white, visceral and hepatic peritonea translucent; webbing on hand reduced between outer fingers; males lacking humeral spine. The reported herein close related with garciae Central Andes added to 20 previously known family occur in eastern Colombia. Moreover, it...
A new endemic species of gymnophthalmid lizard the genus Riama is described from Cordillera Occidental northern Colombia. The differs all known by pholidosis, hemipenial morphology, and color pattern. four Colombian species, columbiana, laevis, stellae, striata, occur in different montane forests are not to be sympatric with species. most resembles R. laevis Andes, but it having 15 longitudinal scale rows, 21–23 transverse rows males 22 females, limbs that do overlap or just touch when...