A5081343770- Insect and Arachnid Ecology and Behavior
- Plant and animal studies
- Insect and Pesticide Research
- Insect Utilization and Effects
- Entomopathogenic Microorganisms in Pest Control
- Insect symbiosis and bacterial influences
- Plant and soil sciences
- Insect behavior and control techniques
- Animal and Plant Science Education
- Amphibian and Reptile Biology
- Insect Pest Control Strategies
- Mosquito-borne diseases and control
- Comparative constitutional jurisprudence studies
- Integrated Energy Systems Optimization
- Banana Cultivation and Research
- Genomics and Phylogenetic Studies
- Advanced Statistical Methods and Models
- Plant Pathogens and Fungal Diseases
- Human Rights and Immigration
- Nematode management and characterization studies
- Species Distribution and Climate Change
- Water Resource Management and Quality
- Mycotoxins in Agriculture and Food
- Wireless Networks and Protocols
- Agricultural and Food Production Studies
Universidad Nacional de Colombia
2007-2021
The University of Texas at Austin
2017
Universidad de Cantabria
2017
Universidad de Antioquia
2008-2010
Universidade Estadual Paulista (Unesp)
2010
Corporación para Investigaciones Biológicas
1999-2001
Universidad Independiente
1999
Leafcutter ants propagate co-evolving fungi for food. The nearly 50 species of leafcutter (Atta, Acromyrmex) range from Argentina to the United States, with greatest diversity in southern South America. We elucidate biogeography cultivated by using DNA sequence and microsatellite-marker analyses 474 cultivars collected across range. Fungal belong two clades (Clade-A Clade-B). dominant widespread Clade-A form three genotype clusters, their relative prevalence corresponding America, northern...
Abstract Nuclear mitochondrial‐like sequences (numts) are copies of mitochondrial DNA that have migrated to the genomic DNA. We present first characterization numts in ants, these being homologues a fragment containing loci 3′ portion cytochrome oxidase I gene, an intergenic spacer, tRNA leucine gene and 5′ II gene. All 67 specimens Atta cephalotes (Hymenoptera: Formicidae: Attini) investigated had homologues, which within two monophyletic groups we called numt1 numt2. Numt1 numt2 less...
Recently, several methodologies to perform geostatistical analysis of functional data have been proposed. All them assume that the spatial process considered is stationary. However, in practice, we often nonstationary because there exists an explicit trend mean. Here, propose a methodology extend kriging predictors for case where mean function not constant through region interest. We consider approach based on classical residual method used univariate geostatistics. three steps procedure....
Leaf cutter ants are considered to be a major pest in the Neotropics, due considerable economic losses they cause by cutting large amounts of plant material cultivate their symbiotic fungus. Their control is mainly achieved through synthetic products with adverse consequences environment and human health. In search for alternatives, ethanolic extracts leaves Capsicum baccatum C. frutescens (Solanaceae), were evaluated against medium size leaf ant Atta cephalotes, its fungus Leucoagaricus...
Los mangles son árboles que poseen características morfológicas y fisiológicas especiales para sobrevivir en el ambiente extremo se forma límite entre la tierra mar, cumpliendo una importante función como primera línea de barrera contra las mareas. En Colombia, encuentra gran concentración bosques mangle donde conviven distintas especies estos árboles, representando 2,09% del total presente planeta. Las zonas manglar han sufrido cambios drásticos debido al aumento presiones antrópicas...
The external portion of Atta cephalotes nests is composed three areas: openings, trails, and cutting; where cutting transporting leaves, sharing information, defending the nest take place. richness fauna these areas not only dependent on interactions among ants, but also accumulation plant material waste, which are exploited by flies family Phoridae. Traps with two different kinds bait were used both during day at night to exploit common aspects phorid fly biology behavior, such as their...
La composición bacteriana asociada a depósitos de desechos las hormigas Atta cephalotes en cautiverio, se analizó empleando métodos microbiología molecular. Ocho cepas bacterianas aislaron utilizando dependientes cultivo, pertenecientes los fila Firmicutes, Proteobacterias y Actinobacterias. De acuerdo con el análisis molecular perfiles electroforesis gel gradiente desnaturalizante (PCR-DGGE) tres áreas desecho A. cephalotes, encontraron diferencias comunidades presentes la fracción total...
The symbiotic association of the leaf-cutter ants with fungus Leucoagaricus gongylophorus implies that negative impact on fungi will affect survival ants. After a promising antifungal bioactivity, Carica papaya was studied leading to bioassay-guided isolation squalene, 4,5-dihydrohumulen, flavanol-glycosides quercetin, kaempferol, and rutin, alkaloid carpaine. Carpaine squalene were found have moderate individual activity, which increased when evaluated together. Based presence these...
Se obtuvieron aislamientos del hongo Metarhizium anisopliae a partir de dos reinas muertas la hormiga Atta cephaloies colectadas en San Luis Antioquia. Los aislamientos fueron cultivados PDA y se identificaron como 136 137. Su patogenicidad evaluó contra obreras A. cephalotes comparó con obtenidos otros insectos. La mortalidad e infección las registro durante 9 días. determinó, por análisis probit, concentrdción infectiva media (C150) el tiempo medio esporulación (TEsd. aislamientos...
In ecology, the success of parasitoid-host interactions is determined by behavior seeking, recognition, attack and defense deployed participants in interaction. Our study aimed to understand behavioral patterns between parasitoid phorids their host Atta colombica from a forest fragment Córdoba department, Colombia. We observed three nests colombica, December 2013 Januray 2015 (including dry rainy seasons), for total effort 189 hours. Phorids, attacks ants collected loads; we also considered...
Durante la excavación de un nido hormiga cortadora Acromyrmex octospinosus, descubrimos una nidada serpiente Stenorrhina degenhardti familia colubridae. Tanto los huevos como masa del fueron transferidos al laboratorio Universidad Antioquia para ser mantenidos en cautiverio. Las hormigas no solo toleraron el dentro cámara crecimiento, sino que activamente usaron estructuras soporte crecimiento hongo simbionte. La ausencia agresión hacia hembra ovipositora (presumiblemente) y neonatos...
Leaf-cutting ants (Atta cephalotes Linnaeus) are one of the main insect pests in Latin America; these (along with Acromyrmex sp.) present a unique characteristic amongst – cultivation Leucoagaricus gongylophorus Möller (Singer) fungus as food source. They belong to tribe Attini and build nests underground chambers which interconnected by pathways. These voracious have attacked over 45 crop fields Colombia. The control method has been use synthetic chemical products; however, alternative...
Durante las evaluaciones del comportamiento de obreras Atta cephalotes, en la descontaminación jardín, se encontró que labores limpieza (podar el jardín e ingerir inóculo contaminante) por parte medianas y mínimas, fueron determinantes hongo simbionte, cuando tratamiento fue dado una concentración baja (103 conidias/ml T lignorum (T-26)) media (106conidias/m1 T. (T-26)). Cuando utilizó mayor (108 registró alta mortalidad debido quizás a ingestión algún componente inóculo, siendo...
La malaria es un grave problema de salud pública en Colombia, con Plasmodium falciparum y P. vivax como los parásitos responsables del 97% casos. En el año 2019 departamento Antioquia presentó 7076 casos malaria, siendo municipio Turbo uno más afectados. El objetivo esta investigación fue determinar las especies Anopheles spp. presentes áreas endémicas transmisión Turbo, Antioquia, evaluar su infección natural Se realizaron cuatro muestreos entre 2015 2016; mosquitos fueron recolectados...