A5035023075- Trypanosoma species research and implications
- Insect symbiosis and bacterial influences
- Insect-Plant Interactions and Control
- Morphological variations and asymmetry
- Genetic diversity and population structure
- Animal Behavior and Reproduction
- Insect behavior and control techniques
- Insect Pest Control Strategies
- Nematode management and characterization studies
- Helminth infection and control
- Evolution and Paleontology Studies
- Insect and Pesticide Research
- Animal Ecology and Behavior Studies
- Diverse Academic Research Areas
- Research on Leishmaniasis Studies
- Entomopathogenic Microorganisms in Pest Control
- Biochemical and Molecular Research
- Plant and animal studies
- Cocoa and Sweet Potato Agronomy
- Livestock and Poultry Management
- Coleoptera: Cerambycidae studies
- Insect Resistance and Genetics
- Silkworms and Sericulture Research
- Agricultural and Food Production Studies
- Vector-borne infectious diseases
University of Buenos Aires
2014-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2014-2025
Fundación Ciencias Exactas y Naturales
2011-2025
Institute of Astronomy and Space Physics
2015
Background Establishing the sources of reinfestation after residual insecticide spraying is crucial for vector elimination programs. Triatoma infestans, traditionally considered to be limited domestic or peridomestic (abbreviated as D/PD) habitats throughout most its range, target an program that has achieved success in Gran Chaco region South America. Methodology/Principal Findings During a two-year period we conducted semi-annual searches triatomine bugs every D/PD site and surrounding...
The conformation of the Sordida subcomplex has been a topic prolonged debate, with diverse methodological approaches employed to discern its constituent species. Up now, Triatoma sordida, T. garciabesi and rosai comprise part this subcomplex. Distinguishing identifying these three species pose significant challenges due their pronounced morphological similarity, overlapping distributions, presence natural hybrids. This study aims uncover genetic diversity geographic spread by analyzing...
Triatoma infestans (Klug), the most important vector of Chagas disease in southern South America, is a highly domiciliated species with well-known sylvatic foci only Bolivian Andean valleys and Chaco, where melanic insects designated as "dark morphs" were found. After tentative identification two bugs collected from parrot nests forest reserve Argentine Chaco T. infestans, we conducted an intensive search there using mouse-baited sticky traps summer 2006 2007. Four live trees without 288...
Knowledge of the genetic variability, population structure, and evolutionary history Triatoma infestans may be useful for developing rational vector control strategies. A 661-bp fragment mitochondrial gene cytochrome oxidase I (COI) was sequenced analyzed in bugs from Argentina, Uruguay, Peru, Bolivia, including peridomestic, domestic, Andean, Chaco sylvatic bugs. total 48 polymorphic sites among 37 haplotypes were described. Nucleotide variation fluctuated samples, with highest nucleotide...
The Sordida subcomplex (Triatominae) comprises four species, Triatoma garciabesi, T. guasayana, patagonica and sordida, which differ in epidemiological importance adaptations to human environments. Some morphological similarities among species make taxonomic identification, population differentiation delimitation controversial. garciabesi sordida are the most similar having been considered alternatively two a single until was re-validated, mostly based on morphology of male genitalia. More...
Introduction Triatoma garciabesi is a vector of Trypanosoma cruzi , the causative agent Chagas disease, and found across northwest central Argentina, southern Bolivia, western Paraguay. It frequently invades rural houses during warm seasons common in peridomestic wild environments. Recently, existence two lineages has been demonstrated based on variation cytochrome c oxidase I gene ( coI ). These occur species distribution range coincide with different ecological regions. Here, we aim to...
Triatoma guasayana is considered an emerging vector of Chagas disease in the Southern Cone South America. The presence a triatomine population with brachypterous individuals, which both wings are reduced, has recently been reported for this species. aim present study was to determine if flight-related traits varied across populations, these could explain differences flight capacity populations and associated geographic and/or climatic variation. involved 66 male T. specimens from 10...
Abstract Background Triatoma garciabesi , a potential vector of the parasitic protozoan Trypanosoma cruzi which is causative agent Chagas disease, common in peridomestic and wild environments found throughout northwestern central Argentina, western Paraguay Bolivian Chaco. Genetic differentiation species across its range can help to understand dispersal patterns connectivity between habitats. Dispersal by flight considered be main active strategy used triatomines. In particular,...
Triatoma infestans , the primary vector of Chagas disease in southern South America, is reported as a dimorphic species for flight muscle development and presents marked phenotypic plasticity traits related to flight. In triatomines, studying relationship between wing variation important, since it involves capacity dispersion. Therefore, we examined association dimorphism morphological T. individuals. We hypothesized that if underdeveloped were associated with decrease developmental...
Abstract.— Developmental time and body size are two positively correlated traits closely related to fitness in many organisms including Drosophila. Previous work suggested that these involved a trade-off may result from negative genetic correlation between their effects on pre-adult adult fitness. Here, we examine the evolution of developmental (indexed by wing length) under artificial selection applied one or both replicated D. buzzatii populations. Directional changes length indicate...
Prevention of vector-borne transmission Chagas disease mainly relies on residual insecticide spraying. Despite significant success at a regional scale, house infestation with Triatoma infestans (Klug) (Hemiptera: Reduviidae) still persists in the Gran Chaco ecoregion. One key aspect is identification sources reinfestant triatomines. After detecting fine-scale genetic structure two rural villages Pampa del Indio, Argentine Chaco, we tested hypotheses putative origins triatomines collected 4,...
The Xdh (rosy) gene is one of the best studied in Drosophila genus from an evolutionary viewpoint. Here we analyze nucleotide variation a 1875-bp fragment second exon Argentinian populations cactophilic D. buzzatii and its sibling koepferae. major electrophoretic alleles not only lack diagnostic amino acids region but also differ on average each other by four to 13 acid changes. Our data suggest that belonging different phytogeographic regions are genetically differentiated, whereas...
House re-invasion by native triatomines after insecticide-based control campaigns represents a major threat for Chagas disease vector control. We conducted longitudinal intervention study in rural section (Area III, 407 houses) of Pampa del Indio, northeastern Argentina, and used wing geometric morphometry to compare pre-spray post-spray (re-infestant bugs) Triatoma infestanspopulations. The community-wide spraying with pyrethroids reduced the prevalence house infestation T. infestans from...
Abstract Second chromosome inversion and genotypic frequencies at seven allozyme loci, differentially associated with inversions, were determined in natural populations of Drosophila buzzatii. The patterns variation allozymes the polymorphisms significantly different, indicating role adaptive differentiation for latter. Moreover, population structure varied among suggesting operation diversifying selection certain loci. Differentiation was negligible Leucyl-amino peptidase (Lap) Peptidase-2...