| infestation of rural houses by triatoma infestans in the region of los llanos (la rioja, argentina). | vectorial transmission of chagas disease has been strongly reduced in most parts of the southern cone countries of south america, except in the gran chaco region of argentina, bolivia, and paraguay. given periodical interruptions of the vector control programmes in the endemic region of the gran chaco of argentina, the vectorial transmission of the disease has been increasing during the last years. from the beginning of 2004, the provincial ministry of health of la rioja, argentina, started a ve ... | 2007 | 17294001 |
| short report: variation in mitochondrial 12s and 16s ribosomal dna sequences in natural populations of triatoma infestans (hemiptera: reduviidae). | mitochondrial dna sequences of the 12s and 16s ribosomal rna genes were analyzed in five natural populations of the chagas' disease vector triatoma infestans from argentina. dna sequence comparisons of 878 basepairs (12s plus 16s) revealed 13 haplotypes. a total of 10 private haplotypes were found in four of the populations analyzed, suggesting low current levels of genetic exchange. the levels of genetic differentiation between the population of chancaní (córdoba) and other two of the populatio ... | 2003 | 12887028 |
| The infra-red (IR) landscape of Triatoma infestans. An hypothesis about the role of IR radiation as a cue for Triatominae dispersal. | This paper presents the infrared (IR) emission spectrum of hosts and habitats of Triatoma infestans in the chaco region of NW Argentina, representing the first attempt to correlate the natural infrared stimulus with the known behaviour of these blood-sucking insect, vectors of Trypanosoma cruzi - causative agent of Chagas disease. The study was carried out in two rural villages of La Rioja Province (Argentina). A FLYR i40 camera was used to obtain IR pictures which were analyzed to determine the ... | 2011 | 21856443 |
| phenotypic diversity of triatoma infestans at the microgeographic level in the gran chaco of argentina and the andean valleys of bolivia. | triatoma infestans (klug) is the main vector of trypanosoma cruzi, etiologic agent of chagas disease. the phenotype of the species varies at different geographic scales. the objective of this study was to compare the antennal phenotype of spatially close t. infestans populations and to evaluate its usefulness as a marker of exchange of individuals between populations. the antennal phenotype of 190 t. infestans from argentina and bolivia was analyzed using uni- and multivariate techniques. this s ... | 2008 | 18714865 |
| active dispersal of triatoma infestans and other triatomines in the argentinean arid chaco before and after vector control interventions. | peridomestic structures are considered the main sites where triatoma infestans (hemiptera: reduviidae) remain and disperse, representing the first risk factor for intradomestic invasion, even after vector control activities. this study analyzed t. infestans dispersal during vector control interventions in six rural houses of the arid chaco (la rioja, argentina). flying and walking dispersers were captured during five months of two consecutive warm seasons after insecticide spraying of intra- and ... | 2016 | 27232129 |
| spatial stratification of house infestation by triatoma infestans in la rioja, argentina. | vectorial transmission of chagas disease has been decreasing over the past few decades because of effective vector control programs in the southern cone of south america. however, the disease is still actively transmitted within the gran chaco region. in this area, vector populations are abundant and highly prevalent in poor rural houses. this study analyses the spatial pattern of rural house infestation by triatoma infestans in a 56,000 km(2) area in the province of la rioja, argentina, before ... | 2009 | 19270290 |
| molecular phylogeography of the chagas' disease vector triatoma infestans in argentina. | triatoma infestans is the main vector of chagas' disease in south america between latitudes 10°s and 46°s. a multilocus microsatellite data set of 836 individuals from 27 populations of t. infestans, from all its range of distribution in argentina, was analyzed. our results favor the hypothesis of two independent migration events of colonization in argentina and secondary contacts. the majority of the populations of the western provinces of catamarca, la rioja, san juan and the west of cordoba p ... | 2011 | 21224874 |
| [trypanosoma cruzi in an immunocompromised patient. reactivation of chagas disease in a resident of la rioja city, argentina]. | | 2015 | 25576424 |
| invasion of rural houses by wild triatominae in the arid chaco. | triatomines are the vectors of trypanosoma cruzi, the etiologic agent of chagas disease, the main endemic disease affecting five to seven million people in latin america. besides triatoma infestans, the most important t. cruzi vector in the gran chaco region, other triatomine species associated with sylvatic birds and mammals are responsible for the maintenance of the wild cycle of t. cruzi. the present study aimed at evaluating the house invasion by sylvatic triatomine species in rural communit ... | 2016 | 27232130 |