About
42
Publications
29,629
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,162
Citations
Introduction
Publications
Publications (42)
The study of sexual dimorphism in Anolis lizards brings the opportunity to understand how this phenomena interacts with adaptive radiation to produce broader diversity. We explored this phenomenon in 43 Anolis species from northwestern South America. Morphometric analysis with body size and shape, and lamellae number, were used to estimate the inde...
Northern Andes Mountains exhibit high elevational fluctuation in
thermal conditions for ectotherms. This fluctuating temperature limits the
survival, growth, and dispersion of ectothermic organisms. Therefore, lizard
species distributed on these mountain landscapes face strong temperature
fluctuations. To test the potential effect of elevation, we...
Thermoregulation in highland tropical environments imposes physiological challenges for reptiles. The interaction between individual thermal requirements with external thermal conditions in these environments remains mostly unknown. We examined the thermal strategy of the nocturnal snake Atractus crassicaudatus (Duméril, Bibron, and Duméril, 1854)...
Anolis lizards have evolved morphologies in response to different selective factors related to microhabitat use. Morphological diversity exhibits evolutionary patterns that reveal similarities and unique regional traits among the mainland and island environments and among Greater Antilles and Lesser Antilles islands. In the Greater Antilles and mai...
Nota divulgativa sobre Anolis onca en la Guajira
https://anoliscolombia.wixsite.com/website/notas
Introduction:
In amphibians, blood may act as a hematopoietic tissue. However, the knowledge concerning hematological features is scarce, there is not much information that allows an analysis about the possible explanations of this physiological feature.
Objective:
This study aimed to evaluate the relationship between immature red blood cells (RBC...
The coexistence of several anoles in the same place is attributed to differential partitioning of resources. Although several mainland and island communities show a similar structure, differences in life-history traits, absence of niche complementarity, higher food supply and higher numbers of predators in mainland environments support the idea tha...
Se presenta un listado preliminar de la herpetofauna de los municipios de Tumaco y Francisco Pizarro, departamento de Nariño, Colombia, ubicados al sur del Chocó biogeográfico, basado en datos de campo y búsquedas en base de datos y literatura. Registramos 25 especies de anfibios y 55 de reptiles, siendo las familias Hylidae y Craugastoridae (anfib...
Guías etnobiológicas de Colombia es una publicación periódica, que nace como resultado de las investigaciones multidiciplinares del grupo estudiantil "MUI" de la Facultad de Ciencias de la Universidad Nacional de Colombia. El objetivo de estas guías de campo es mostrar la cosmovisión de grupos étnicos y resaltar la importancia de su conservación cu...
We present the results of three years of sampling of amphibians and reptiles in different habitats in the municipality of San José del Guaviare, Guaviare, Colombia. We conducted four field excursions between 2012 and 2014 and found a total of 40 amphibian and 63 reptile species, representing a sampling coverage of 98 % for amphibians and 93 % for r...
Material no académico con pautas para la observación de fauna. También contiene al final, afiches con la fauna representativa del Guaviare (anfibios, reptiles y mamíferos).
Catálogo sobre la herpetofauna de San José del Guaviare en venta en la Editorial UN, Universidad Nacional de Colombia, Sede Bogotá.
https://www.uneditorial.com/bw-anfibios-y-reptiles-del-municipio-de-san-jose-del-guaviare-guaviare-colombia-guia-de-campo-del-instituto-de-ciencias-naturales-n-24-veterinaria-y-zootecnia.html
Afiches con la herpetofauna más representativa del municipio de San José del Guaviare, Colombia
Estimamos el patrón y tasa de crecimiento de individuos de Anadia bogotensis bajo condiciones de cautiverio y climáticas similares a las que experimentan los individuos en poblaciones silvestres. Obtuvimos huevos de nidos comunales de esta especie provenientes de una localidad del municipio de La Calera, Cundinamarca, los cuales fueron incubados en...
Nesting in tropical highlands is challenging due to the fluctuations of temperature, including extreme cold, and humidity. For most reptiles in the highland tropical region the thermal and hydrological profiles of nests have not been described, and it is therefore uncertain how future climate change may affect this ontogenetic stage. We monitored 1...
Colombia is a megadiverse country with about 600 species of reptiles; however, there are few studies on species of hemoparasites found in this taxonomic group. Here, we document the presence of Plasmodium spp. in four species of reptiles from the northern part of the Orinoco-Amazon region in Colombia. Individuals analyzed in this study were capture...
Colombia es un país megadiverso, el cual posee una gran variedad de fauna de vida silvestre, entre ellos los reptiles, un grupo representativo con cerca de 600 especies, de las cuales 98 se encuentran clasificadas en diversas categorías de amenaza. No obstante, existen pocos estudios que permitan conocer la presencia y distribución de hemoparásitos...
Low thermal quality environments, such extreme latitudes or high elevation regions, are highly expensive for reptiles in terms of thermoregulation. Thus, physiological adaptations or behavioral adjustments to live in these habitats have evolved in some species. Anolis heterodermus (Duméril, 1851) is an anole lizard that lives at high elevations in...
En el mes de Junio de 2016 se llevó a cabo el taller de educación en turismo para la naturaleza en el Municipio de San José del Guaviare, con el apoyo del Sistema de Investigación y Extensión de la Universidad Nacional de Colombia, sede Bogotá.
Lepidoblepharis lizards are tiny geckos of the forest leaf litter. This genus is distributed from Nicaragua to the Amazonian region of Peru and Brazil, and the genus currently contains 21 species. We found a new small Lepidoblepharis from eastern Colombia that we here describe as a new species. It is characterized by having granular or subconical d...
Anolis lizards are one of the most diverse vertebrate genera and are the classic example of adaptive radiation and convergent evolution. Anoles exhibit great morphological diversity produced by the ecological opportunity to exploit several arboreal niches. Anole radiation in the Caribbean islands is well studied, but the mainland radiation is less...
Understanding the phylogenetic and geographical history of Neotropical lineages requires having adequate geographic and taxonomic sampling across the region. However, Colombia has remained a geographical gap in many studies of Neotropical diversity. Here we present a study of Neotropical skinks of the genus Mabuya, reptiles that are difficult to id...
We report the first records of Anolis ventrimaculatus for Ecuador based on twelve specimens from three localities: Chical (Provincia Carchi), El Cristal (Provincia Esmeraldas), and Lita (Provincia Imbabura). The locality in the Provincia Carchi lies approximately 16 km S from the nearest record (Ñambí, Department Nariño, Colombia). We also present...
Interspecific gene flow is pervasive throughout the tree of life. Although detecting gene flow between populations has been facilitated by new analytical approaches, determining the timing and geography of hybridization has remained difficult, particularly for historical gene flow. A geographically explicit phylogenetic approach is needed to determ...
En el marco del Plan Operativo Anual (2015) del Programa de Ciencias de la
Biodiversidad del Instituto de Investigación de Recursos Biológicos Alexander von
Humboldt, se llevó a cabo la actualización de la evaluación del riesgo de extinción y
la elaboración del Libro rojo de reptiles de Colombia (2015). Esta iniciativa se
llevó a cabo con el aval d...
Anolisauratusis a widely distributed species, from Costa Rica in Central America, through northern South America, including
Colombia, Venezuela, northern Brazil, Surinam and the Guyanas. In Colombia, its widespread distribution across different
life zones suggests that these lizards occupy different environments and exhibit different microhabitat u...
Anolis lizards exhibit high morphological diversity, partially related to variation in structural resource use, that probably
influences foraging behavior and prey selection of individuals and species. Anoles are largely insectivorous: most
species are generalists/opportunists and few are specialists. Dietary differences between sexes and among ind...
Variation in body characteristics related to lizard locomotion has been poorly studied at the intraspecific level in Anolis species. Local adaptation due to habitat heterogeneity has been reported in some island species. However, studies of mainland species are particularly scarce and suggest different patterns: high variability among highland liza...
Resumen Las colecciones biológicas son depositarias del patrimonio biológico del país. Sin embargo, no siempre es fácil acceder a la información asociada a estas colecciones, por falta de recursos y tiempo para extraer los datos de las etiquetas de colecta o catálogos de los especímenes. Gracias a la cooperación entre el Instituto de Ciencias Natur...
Morphological diversification in island anoles follows different patterns in the Greater and Lesser Antilles, respectively. Most Greater Antillean anoles are grouped within six ecomorph classes according to habitat use: crown giant, trunk-crown, trunk, trunk-ground, grass-bush and twig. In contrast, most species from the Lesser Antilles cannot be a...
by Chris Phillips. Illinois Natural History Survey (INHS 2011k). New county record (Minton 2001. Amphibians and Reptiles of Indiana, 2 nd ed., revised. Indiana Academy of Sci-ence. vii–404 pp.) One adult out in the open in leaf litter. SARAbeth Klueh (e-mail: sklueh@dnr.in.gov) and JASOn miRtl, wildlife Diversity section, Indiana Department of Natu...
It is predicted that climate change will cause species extinctions and distributional shifts in coming decades, but data to
validate these predictions are relatively scarce. Here, we compare recent and historical surveys for 48 Mexican lizard species
at 200 sites. Since 1975, 12% of local populations have gone extinct. We verified physiological mod...
We studied the reproductive characteristics of sympatric populations of Sceloporus formosus scitulus, Sceloporus omiltemanus (Phrynosomatidae), and Mesaspis gadovii (Anguidae) at the Omiltemi forest reserve (Guerrero, Mexico). Males are larger and reach larger body sizes at reproductive maturity and are more colorful than females in both Sceloporus...
The evolution of viviparity in squamates has involved intermediate stages of egg retention. Reduction in the thickness of the eggshell, in relative clutch mass (RCM), and in clutch frequency would have facilitated the transition from oviparity to viviparity, while low temperatures are likely the ultimate selective force that promoted this evolution...
