A5021419053- Wildlife Ecology and Conservation
- Insect and Pesticide Research
- Bee Products Chemical Analysis
- Essential Oils and Antimicrobial Activity
- Plant and animal studies
- Avian ecology and behavior
- Primate Behavior and Ecology
- Environmental and Cultural Studies in Latin America and Beyond
- Marine animal studies overview
- Evolution and Paleontology Studies
- Insect and Arachnid Ecology and Behavior
- Bat Biology and Ecology Studies
- Human-Animal Interaction Studies
- Mediterranean and Iberian flora and fauna
- Crystallization and Solubility Studies
- Animal Law and Welfare
- X-ray Diffraction in Crystallography
- Species Distribution and Climate Change
- Viral gastroenteritis research and epidemiology
- Coconut Research and Applications
- Neuroinflammation and Neurodegeneration Mechanisms
- Salmonella and Campylobacter epidemiology
- Turtle Biology and Conservation
- Animal Ecology and Behavior Studies
- Cephalopods and Marine Biology
Universidad Nacional de Colombia
2006-2021
Fundación Biodiversidad
2012-2016
University of Alicante
2012-2015
Institute for Biodiversity
2013
Bombus atratus bumblebees from Colombia that were caught in the wild and breeding programs screened for a broad set of bee pathogens. We discovered first time Lake Sinai Virus confirmed infection by other common viruses. The prevalence Apicystis bombi, Crithidia bombi Nosema ceranae was remarkably high. According to studies former two could have been co-introduced South America with exotic bumble bees as terrestris or ruderatus. Given fact none these species occur Colombia, our data puts new...
I analyzed 28 fecal samples from Andean bears (Tremarctos ornatus) collected between 2003 and 2007 the Laquipampa Wildlife Refuge Yanachaga Chemillén National Park, Peru. used direct faeces test spontaneous sedimentation tube technique to detect cysts, ova, larvae. To intestinal coccidia, applied acid stain using Ziehl–Neelsen modified method. detected parasites in 16 scats (57.1%), identifying 3 protozoa for first time bear: Blastocystis sp., Cryptosporidium Giardia sp.; as well nematodes:...
The global spread of the ectoparasitic mite Varroa destructor has promoted and virulence highly infectious honey bee viruses. This phenomenon is considered leading cause for increased number colony losses experienced by mite-susceptible European populations in Northern hemisphere. Most Central South America are Africanized bees (AHBs), which more resistant to compared bees. However, relationship between levels viruses AHBs remains unknown. In this study, we determined prevalence infestation...
Introducción: El oso andino Tremarctos ornatus fue cazado durante la época incaica por ser considerado como un animal dañino, depredador de vicuñas y guanacos. Posteriormente, con llegada los españoles, el ganado vacuno traido ellos, proporcionó una nueva abundante fuente alimento para osos. Esto conllevó a fortalecer percepción pobladores hacia depredador, sin tomar en cuenta que podría tratarse eventos carroñeros. Asimismo, se extendieron cultivos maíz donde también aprovechó estos. En...
El oso andino (Tremarctos ornatus) es una especie en situación vulnerable, cuyo hábitat se va fragmentando poco a por la expansión de las actividades humanas. En el Perú, bosque seco del Marañón, ecorregión investigada nivel biológico y ecológico, también especie. Lamentablemente, actualidad está siendo afectada agricultura, ganadería construcción vías comunicación, futuro cercano verá amenazada implementación económicas gran envergadura, como centrales hidroeléctricas. Con objetivo...
Andean bear Tremarctos ornatus (Carnivora: Ursidae) diet review in South America and new records to Peru. In order update the knowledge of species recorded (Spectacled bear) its geographic range (Venezuela, Colombia, Ecuador, Peru Bolivia), we collected analyzed published information about issue 76 documents as well fieldwork obtained nine protected areas interviews six additional natural same country. field work identified 114 vegetal consumed by bear, which 69 were 51 America....
The diet of the andean bear Tremarctos ornatus was assessed in dry equatorial, tropical rainy, premontane, montane, and upper montane forests, puna, whithin nine natural protected areas Peru (Laquipampa, Chaparri, Cutervo, Yanachaga, Yanesha, Megantoni, Amarakaeri, Manu Machu Picchu) between 2001 2008. Six hundred forty six records were obtained related to bear’s diet: 522 (80.8%) food waste, 62 (9.6%) feces, 55 (8.5%) climbed trees with sign supplies, 7 (1.1%) scrabbled roots trunks. Two...
Se evaluó la actividad antimicrobiana de cuatro extractos propóleos argentinos, cinco colombianos y uno cubano frente a Streptococcus mutans ATCC 25175. La bactericida bacteriostática fue medida por concentración mínima inhibitoria en un rango entre 0.02 15 mg/ml. totalidad las muestras analizadas presentaron contra concentraciones 3.75 Los que mayor efecto fueron el 2 3 (muestras colombianas) luego 48 horas incubación.El mejor bacteriostático lo presentó muestra (propóleo colombiano)...
En el Perú, oso andino (Tremarctos ornatus) habita principalmente en bosque montano, entre los 1900 y 2350 msnm. contraposición, registros del tropical amazónico(BTA), debajo de 650 msnm, son considerados como raros. Se evaluó la presencia esta especie BTA límite Parque Nacional Yanachaga Chemillén con Reserva Comunal Yanesha(PNYC-RCY, 32.8 km), febrero/2005 julio/2007, Amarakaeri (RCA, 190.96 km) abril-mayo agosto/2008. Para primer caso, se encontró una abundancia relativa andino, 0.081...
Between 2002 and 2007, the sale of parts derivatives Andean bear Tremarctos ornatus was registered in 27 45 markets located 14 24 regions visited Peru. The with highest sales were Lambayeque (32.7%), Piura (17.3%), San Martín (13.5%), Cajamarca (11.5 %) Amazonas (5.8 %). main products on fat cream (38.4%), (17.4 %), paws (14 leather (10.5 bones (8.1 came mainly from bears hunted (27.6 (20.7 Martin (13.8 Bear are sold locally for magical curative uses, although they also offered as...
Evaluations in situ, interviews, literature review and database of museums zoos were performed, with the aim identifying areas Andean bear Tremarctos ornatus records Peruvian sector Vilcabamba-Amboro Conservation Corridor.Bear presence was reported several regions Ayacucho, Junin, Cuzco, Madre de Dios Puno, including protected areas: Ashaninka, Machiguenga Amarakaeri Communal Reserves, Otishi, Manu Bahuaja Sonene National Parks, Megantoni Sanctuary, Machu Picchu Historic Choquequirao...
espanolDel 14 al 25 de julio 2010 (invierno austral) se realizo una evaluacion las aves marinas entre latitudes 7o00'S y 10o59'S, frente a regiones La Libertad, Ancash parte norte Lima (Peru), distancia la costa desde 8,33 km hasta 78,71 (4,50 M 42,50 M). Se contabilizaron un total 25001 aves, que correspondieron 23 especies. registro promedio 2,38 especies/km2, donde Puffinus griseus (Gmelin, 1789) presento mayor densidad con 20,73 ind/km2. El numero especies en latitud 9°S (20 spp., 87%)...
Durante su vida geriátrica, algunos perros pueden presentar cambios progresivos en comportamiento habitual, como desorientación, disminución la interacción con los miembros de familia, irritabilidad y vocalización excesiva, entre otros. La inespecificidad estas alteraciones ha hecho que muchas modificaciones comportamentales sean consideradas, erróneamente, signos típicos del envejecimiento “normal”. No obstante, ser reflejo un proceso patológico cerebral provoca deterioro progresivo las...
We described and illustrated the skull jaw of andean bear Tremarctos ornatus, comparatively analyzing among individuals different ages sexes, adults other species Ursidae.In ontogenetic level, we found following morphological changes associated with senescence: obliteration sutures, crests development, widening zygomatic arches frontalized orbits, muzzle occipital region elongation, tooth wear.We also that as length between front edge premolar 4 rear molar 2 in is most stable.This allowed to...
The Masked Booby Sula dactylatra has a wide distribution range, breeding on most tropical islands around the world (Nelson 1978, Pitman & Jehl 1998). In eastern Pacific Ocean, Boobies nest Alijos and Revillagigedos (Mexico), Clipperton (France, off south-western Mexico), Galapagos (Ecuador) Juan Fernandez (Chile) islands. recently described Nazca S. granti smaller only Revillagigedos, Clipperton, Malpelo (Colombia), La Plata (Pitman 1998, Fig. 1). identification of these two similar-looking...
Beekeepers in Colombia are using almost exclusively Africanized hybrids which considered to be more resistant diseases and climatic conditions than European-derived honey bee populations. There no reports of losses larval adult populations the country due infectious diseases. However, there is official diagnostic system detect presence pathogenic bacteria for Apis mellifera, such as Melissococcus plutonius Paenibacillus larvae causing European foulbrood American respectively. To assess their...
Entre los anos 2005 y 2010 se registro al potoyunco peruano Pelecanoides garnotii (Lesson, 1828) en 57 oportunidades, frente a las costas de regiones Piura, Lambayeque, La Libertad, Ancash Lima, Peru. El tamano grupos registrados fue 1 10 individuos, cuales encontraban alimentandose y/o descansando sobre el mar. Los registros ocurrieron principalmente medio dia, una distancia entre 51,02 km 6,1 la costa. Asimismo, encontro un mayor meses septiembre noviembre, decayendo abruptamente...