| biogeography of brazilian populations of panstrongylus megistus (hemiptera, reduviidae, triatominae) based on molecular marker and paleo-vegetational data. | in epidemiological terms, panstrongylus megistus is one of the most important species of triatomine bug in brazil. samples from 11 localities were studied using the random amplification of polymorphic dna (rapd) technique, which was able to differentiate the study populations clearly. biogeographical data indicate that these populations could already have arisen 18,000 years ago (c(14)), it being possible to differentiate insects from the brazilian states of santa catarina (sc) in the south, cea ... | 2006 | 17055993 |
| triatoma juazeirensis sp. nov. from the state of bahia, northeastern brazil (hemiptera: reduviidae: triatominae). | triatoma juazeirensis, a new triatomine species from the state of bahia, northeastern brazil, is described. the new species is found among rocks in sylvatic environment and in the peridomicile. type specimens were deposited in the entomological collection of oswaldo cruz institute-fiocruz, museum of zoology of university of são paulo, and florida museum of natural history. t. juazeirensis can be distinguished from the other members of the t. brasiliensis species complex mainly by the overall col ... | 2007 | 17294006 |
| interpopulation variability among panstrongylus megistus (hemiptera: reduviidae) from brazil. | comparisons were made among panstrongylus megistus (burmeister) from three areas of brazil (bahia, minas gerais, and santa catarina), where populations differ with regard to their degree of association with human dwellings. the following characters were studied: morphology of the eggs and the male genitalia; morphometry of the head and thorax; isoenzyme profile; enzymatic activity of the alpha-glycerophosphate dehydrogenase (alpha-gpdh); and cytogenetics. in general, differences were observed in ... | 2003 | 14680104 |
| could the bug triatoma sherlocki be vectoring chagas disease in small mining communities in bahia, brazil? | searches for chagas disease vectors were performed at the type locality from which triatoma sherlocki papa et al. (hemiptera: reduviidae: triatominae) was described in the municipality of gentio do ouro, in the state of bahia, brazil, and in a small artisan quarry-mining community approximately 13 km distant in a remote area of the same municipality. the latter site represents a new locality record for this species. adults, nymphs and exuviae of t. sherlocki were found in 21% of human dwellings, ... | 2009 | 19941607 |
| isoenzymes detect variation in populations of triatoma brasiliensis (hemiptera: reduviidae: triatominae). | triatoma brasiliensis is one of the most important vectors of chagas disease in the semiarid zone of the northeast of brazil. intraspecific morphological and behavioural variation has been reported for different populations. results for four distinct populations using eight isoenzymes are reported here. the literature describes three subspecies: t. brasiliensis brasiliensis neiva, 1911; t. brasiliensis melanica neiva & lent, 1941 and t. brasiliensis macromelasoma galvão, 1956. these subspecies d ... | 1997 | 9361737 |
| spatial distribution of triatomines (reduviidae: triatominae) in urban areas of the city of salvador, bahia, brazil. | environmental changes have a strong influence on the emergence and/or reemergence of infectious diseases. the city of salvador, brazil -currently the focus of a housing boom linked to massive deforestation- is an example in point as the destruction of the remaining areas of the atlantic forest around the city has led to an increased risk for chagas disease. human domiciles have been invaded by the triatomine vectors of trypansoma cruzi, the flagellate protozoan causing chagas disease, a problem ... | 2011 | 21590670 |
| wild habitat and related fauna of panstrongylus lutzi (reduviidae, triatominae). | although panstrongylus lutzi (neiva and pinto) is currently the fifth most frequent species of triatominae captured in artificial structures in brazil, its silvatic habitat remains unknown. a survey of its natural ecotopes was performed in an area of bahia state. p. lutzi nymphal instars and adults were detected in burrows of dasypodidae. silvatic habitat of four other endemic triatomine species of the caatinga (triatoma pseudomaculata correa and espinola, triatoma brasiliensis neiva, rhodnius n ... | 2003 | 14765681 |
| an outbreak of acute chagas's disease in the são francisco valley region of bahia, brazil: triatomine vectors and animal reservoirs of trypanosoma cruzi. | following reports of an unusually high incidence of acute chagas's disease and the appearance of large numbers of triatoma infestans in the southwestern region of the state of bahia, triatomine bugs (hemiptera: reduviidae) and domestic animals in one of the affected communities were surveyed and examined for infection with trypanosoma cruzi. triatoma infestans was prevalent in houses and was also found in peridomestic habitats. t. sordida and t. pseudomaculata occupied peridomestic and sylvatic ... | 1979 | 120045 |
| differences in saliva composition among three brazilian populations of panstrongylus megistus (hemiptera, reduviidae). | comparisons of electrophoretic profiles of triatomines (panstrongylus megistus) from the brazilian states of bahia (ba), minas gerais (mg) and santa catarina (sc) revealed differences in the composition of the saliva between the three populations. a phenogram constructed on the basis of the most representative electrophoretic banding patterns allowed the specimens tested to be divided into two groups. the ba and sc populations could be completely separated while some individuals from mg could be ... | 1999 | 9924964 |
| [triatominae fauna of the state of bahia, brazil. v. microtriatoma pratai sp. n.--hemiptera, reduviidae, triatominae, bolboderini]. | | 1982 | 6755160 |
| ecotopes, natural infection and trophic resources of triatoma brasiliensis (hemiptera, reduviidae, triatominae). | triatoma brasiliensis is considered as one of the most important chagas disease vectors in the northeastern brazil. this species presents chromatic variations which led to descriptions of subspecies, synonymized by lent and wygodzinsky (1979). in order to broaden bionomic knowledge of these distinct colour patterns of t. brasiliensis, captures were performed at different sites, where the chromatic patterns were described: caicó, rio grande do norte (t. brasiliensis brasiliensis neiva, 1911), it ... | 1998 | 9698835 |
| microsatellite markers in triatoma pseudomaculata (hemiptera, reduviidae, triatominae), chagas' disease vector in brazil. | six polymorphic microsatellite loci were isolated and characterized using a microsatellite-enriched genomic library from the chagas' disease vector triatoma pseudomaculata. this species is found in brasil in caatinga areas and predominantly in peridomestic habitats. all the microsatellites tested on a population of t. pseudomaculata sampled in the bahia state, brazil, were polymorphic (2-15 alleles). markers amplification was also tested on six triatoma species and some loci successfully amplifi ... | 2008 | 18571993 |