| monitoring the domiciliary and peridomiciliary invasion process of triatoma rubrovaria in the state of rio grande do sul, brazil. | the presence of triatoma rubrovaria in brazil has only been confirmed in the states of paraná and rio grande do sul (rs), where it is found naturally infected with trypanosoma cruzi. in the wild environment it occurs in rocky habitats and has an eclectic diet, feeding from cockroaches, reptiles and mammals. data from the chagas disease control program obtained by the fundação nacional de saúde, between 1975 and 1997, indicate a growing domiciliary and peridomiciliary invasion of t. rubrovaria in ... | 2000 | 11080758 |
| triatoma rubrovaria (blanchard, 1843) (hemiptera: reduviidae) i: isoenzymatic and chromatic patterns of five populations from the state of rio grande do sul, brazil. | triatoma rubrovaria has become the most frequently captured triatomine species since the control of t. infestans in the state of rio grande do sul (rs), brazil. in order to evaluate the genetic variability of this species, field collections were performed in four municipalities where it has been reported and distant from 75 to 322 km. specimens were analyzed by color pattern and isoenzymes. nine enzymatic loci were interpreted from nine enzymatic systems. the santiago population was isolated fro ... | 2002 | 12386704 |
| [population statistics of triatoma rubrovaria in laboratory]. | to obtain t. rubrovaria population parameters in order to describe its demographic characteristics. | 2005 | 15895140 |
| [rupestrian triatomines infected by trypanosomatidae, collected in quaraí, rio grande do sul, 2003]. | rupestrian triatomines were captured in six quaraí city localities, rs, to verify the level of trypanosomatidae infection, as well as the animal reservoir. the capture occurred in a wild environment and 453 samples were collected, which were identified and separated by nymphal instar. 421 (92.9%) samples of triatoma rubrovaria, 26 (5.7%) of triatoma circummaculata and 6 (1.3%) of panstrongylus tupynambai were collected. only 13 samples (4.2%) of triatoma rubrovaria presented trypanosomatidae inf ... | 2006 | 16699650 |
| triatoma rubrovaria (blanchard, 1843) (hemiptera-reduviidae-triatominae) iii: patterns of feeding, defecation and resistance to starvation. | data from the chagas disease control program indicate a growing domiciliary and peridomiciliary invasion of triatoma rubrovaria in the state of rio grande do sul, where it has become the most frequent triatomine species captured there since the control of t. infestans. bionomic characteristics that could influence the vectorial capacity of t. rubrovaria as vector of trypanosoma cruzi were evaluated: patterns of (i) feeding, (ii) defecation, and (iii) resistance to starvation, using insects fed o ... | 2003 | 12886416 |
| triatoma rubrovaria (blanchard, 1843) (hemiptera, reduviidae, triatominae) ii: trophic resources and ecological observations of five populations collected in the state of rio grande do sul, brazil. | triatoma rubrovaria has become the most frequently captured triatomine species after the control of t. infestans in the state of rio grande do sul (rs), brazil. isoenzymatic and chromatic studies indicate the existence of, at least, two distinct phenotypic patterns of t. rubrovaria in rs. the geographic variation noted through molecular tools may also result in distinct profiles of vectorial potentiality. in order to enhance our understanding of the bionomic knowledge of t. rubrovaria separate b ... | 2003 | 12563478 |
| [detection of triatomines (hemiptera: reduviidae) in domiciliary and extra-domiciliary ecotopes. corrientes, argentina. ]. | in order to identify intra- and extra-domiciliary triatomines, a study in different counties of corrientes province, argentina, was conducted from 1985 to 1995. triatoma infestans (klug, 1834), triatoma sordida (stål, 1859), panstrongylus geniculatus (latreille, 1811), and panstrongylus megistus (burmeister, 1835) were detected in domestic ecotopes. t. infestans and t. sordida were also found in the peridomicile. triatoma platensis (neiva, 1913), psammolestes coreodes (bergroth, 1911), t. sordid ... | 2001 | 11514865 |
| [morphology of the eggs of triatoma circummaculata and triatoma rubrovaria (hemiptera, reduviidae)]. | to study morphologically the eggs of t. circummaculata and t. rubrovaria. | 2000 | 11105119 |
| ecology of triatoma rubrovaria (hemiptera, triatominae) in wild and peridomestic environments of uruguay. | this paper describes population structure, spatial distribution and habitat selection of wild and peridomestic populations of triatoma rubrovaria (blanchard, 1843). field studies were carried out at las piedras and la bolsa in the northern department of artigas, uruguay. a semicircular sampling area, divided in seven or eight triangular sectors was sequentially examined from october 1990 to november 1991. at las piedras (typical wild habitat) 1063 t. rubrovaria bugs were collected from 84% of th ... | 1995 | 8544735 |
| [feeding pattern of triatoma rubrovaria (blanchard, 1843) (hemiptera, triatominae) in peridomiciliary habitats, of a rural area of uruguay]. | it has been studied the feeding patterns of triatoma rubrovaria (wild triatominae bug, and intradomiciliary secondary vector of t. cruzi) in a rural area of "la bolsa" (department of artigas). agar double diffusion test were used for analyze the blood meal, from 120 insects, which were confronted to 13 antisera. it has 251 identify blood meals, and the most frequently was mammalian host (73%), but it has a variable source of feeding (mammals, birds, reptiles and cockroach), including humans rate ... | 1994 | 7732261 |
| autogeny in three species of triatominae: rhodnius prolixus, triatoma rubrovaria, and triatoma infestans (hemiptera: reduviidae). | autogeny, the capacity of a female to lay eggs without having ingested any blood meal in the adult stage, was studied in three species of triatominae: triatoma infestans, triatoma rubrovaria, and rhodnius prolixus. when nymphs of t. rubrovaria and r. prolixus were fed chicken blood, autogeny occurred frequently, even with only one meal. in t. infestans autogeny was frequent as well, but demanded at least two nymphal blood meals. total number of autogenic eggs was positively correlated with the b ... | 1992 | 1495041 |
| [the control of vectorial transmission]. | between 1950 and 1951, the first prophylactic campaign against chagas diseases was carried on in brazil by the so existing serviço nacional de malária. the actions involving chemical vector control comprehended 74 municipalities along the rio grande valley, between the states of são paulo and minas gerais. ever since, until 1975, the activities were performed according the availability of resources, being executed with more or less regularity and coverage. at that time, chagas disease did no rep ... | 2011 | 21584358 |
| biology, diversity and strategies for the monitoring and control of triatomines--chagas disease vectors. | despite the relevant achievements in the control of the main chagas disease vectors triatoma infestans and rhodnius prolixus, several factors still promote the risk of infection. the disease is a real threat to the poor rural regions of several countries in latin america. the current situation in brazil requires renewed attention due to its high diversity of triatomine species and to the rapid and drastic environmental changes that are occurring. using the biology, behaviour and diversity of tri ... | 2009 | 19753457 |
| rural triatoma rubrovaria from southern brazil harbors trypanosoma cruzi of lineage iic. | triatoma infestans, the main vector of chagas disease, has nearly been eliminated from brazil. nevertheless, other triatominae species are involved in the domiciliation process, including triatoma rubrovaria in rio grande do sul state (rs). previous studies showed that 1.6% of the t. rubrovaria specimens collected at the rural district of quaraí, rs, were naturally infected by trypanosoma cruzi. in this study, five t. cruzi isolates obtained from infected triatomines were characterized molecular ... | 2008 | 18784237 |
| genetic variability of triatoma rubrovaria (reduviidae: triatominae) from brazil, argentina and uruguay as revealed by two different molecular markers. | randomly amplified polymorphic dna (rapd) and nuclear ribosomal dna sequence analyses were used to assess the genetic population structure of the south american triatomine species triatomo rubrovario throughout its geographical distribution. to investigate the genetic variability at both intraspecific and intrapopulational levels the rapd profiles and the nucleotide sequences of the rdna intergenic spacers, its-1 and its-2, were analysed and compared. the phenetic analysis based on rapd profiles ... | 2007 | 17933301 |
| life cycle and reproductive patterns of triatoma rubrovaria (blanchard, 1843) (hemiptera: reduviidae) under constant and fluctuating conditions of temperature and humidity. | the aim of this study was to evaluate the temperature and relative humidity influence in the life cycle, mortality and fecundity patterns of triatoma rubrovaria. four cohorts with 60 recently laid eggs each were conformed. the cohorts were divided into two groups. in the controlled conditions group insects were maintained in a dark climatic chamber under constant temperature and humidity, whereas triatomines of the ambiental temperature group were maintained at room temperature. average incubati ... | 2005 | 16172762 |
| triatoma rubrovaria (blanchard, 1843) (hemiptera-reduviidae-triatominae) iv: bionomic aspects on the vector capacity of nymphs. | triatoma rubrovaria has become the most frequently captured triatomine species since the control of t. infestans in the state of rio grande do sul (rs), brazil. the aim of this study was to evaluate aspects of the vectorial competence of t. rubrovaria using nymphs raised in laboratory under environmental conditions of temperature and humidity and fed on mice. the average developmental period of t. rubrovaria was 180.1 days. the percentage of defecation shortly after feeding was still higher than ... | 2005 | 16113859 |
| rapd analyses and rdna intergenic-spacer sequences discriminate brazilian populations of triatoma rubrovaria (reduviidae: triatominae). | triatoma rubrovaria, a member of the 'infestans' subgroup, is a potential vector of trypanosoma cruzi in southern brazil. surveillance data indicate a growing domiciliary and peridomiciliary invasion by tri. rubrovaria in the rural areas of rio grande do sul (rs). in fact, following effective control of tri. infestans, tri. rubrovaria, which seems to have pre-adaptative characteristics for anthropic ecotopes, has become the most frequent species of triatomine bug to be collected in these areas. ... | 2003 | 14613635 |
| biology of triatoma carcavalloi jurberg, rocha & lent, 1998 under laboratory conditions. | triatoma carcavalloi is a wild species that is found in sympatry with triatoma rubrovaria and triatoma circummaculata, which are vectors of trypanosoma cruzi currently found in rural areas of rio grande do sul, brazil. | 2014 | 25075481 |
| assessing the vulnerability of brazilian municipalities to the vectorial transmission of trypanosoma cruzi using multi-criteria decision analysis. | despite the dramatic reduction in trypanosoma cruzi vectorial transmission in brazil, acute cases of chagas disease (cd) continue to be recorded. the identification of areas with greater vulnerability to the occurrence of vector-borne cd is essential to prevention, control, and surveillance activities. in the current study, data on the occurrence of domiciliated triatomines in brazil (non-amazonian regions) between 2007 and 2011 were analyzed. municipalities' vulnerability was assessed based on ... | 2014 | 24857942 |
| ultrastructure and morphometry of eggs of triatoma rubrovaria (blanchard, 1843), triatoma carcavalloi juberg, rocha & lent, 1998 and triatoma circummaculata (stål, 1859) (hemiptera-reduviidae-triatominae). | this study analyzed the body and the operculum of eggs of triatoma rubrovaria, t. carcavalloi and t. circummaculata, considered sylvatic species that live in sympatry.triatoma rubrovaria is currently considered the most important vector of trypanosoma cruzi in the rural areas of the state of rio grande do sul, followed by t.circummaculata. significant differences other than morphometry have been observed in the egg structures of the three species using traditional microscopy and scanning electro ... | 2013 | 25113703 |
| mitochondrial gene confirms the specific status of triatoma pintodiasi jurberg, cunha, and rocha, 2013 (hemiptera, triatominae), an endemic species in brazil. | chagas disease is most frequently transmitted to humans through contact with feces of insects from the triatominae subfamily. in brazil, there are 65 species of triatomines distributed throughout the country's 27 states. among the species in the state of rio grande do sul, triatoma rubrovaria, triatoma oliveirai, triatoma pintodiasi, triatoma klugi, triatoma carcavalloi, and triatoma circummaculata (with the addition triatoma limai, which is endemic to argentina) form the t. rubrovaria subcomple ... | 2017 | 27821685 |
| [triatoma rubrovaria (blanchard 1843): life table of nymphs, duration of the forms and posture of the females]. | the authors followed the development of 150 eggs of triatoma rubrovaria to enable the construction of a life table for the nymphs. the winged form was reached by 94.64% of the individuals, of which 79 were males and 65 females. the mean lifetime of the males was 115 days and 99 days for the females. part of this group was divided into 30 couples and kept separated to facilitate the count of egg laying by each female. another lot was also formed of 30 males and 30 females but these were housed to ... | 2006 | 15895178 |
| chromosomal characteristics and distribution of constitutive heterochromatin in the matogrossensis and rubrovaria subcomplexes. | since 1966 the triatomines were grouped in complexes and specific subcomplexes. although the complex and subcomplexes not have taxonomic importance, should be monophyletic groups and cytogenetic tools have proved to be of great importance to characterize these species groupings. based on this, this paper aims to describe the chromosomal characteristics and heterochromatic pattern of matogrossensis and rubrovaria subcomplexes, in order to contribute to the taxonomic and evolutionary relationships ... | 2015 | 25917494 |
| immunofluorescence and ultrastructural analysis of the chromatoid body during spermatogenesis of triatoma platensis and t. rubrovaria (hemiptera, triatominae). | this study sought to analyze spermatogenesis in two species of triatomines (triatoma rubrovaria and t. platensis) by focusing on the chromatoid body (cb) during three stages of spermatogenesis (spermatocytogenesis, meiosis, and spermiogenesis). the cytochemistry technique known as silver impregnation revealed nucleolar persistence. we suggest that this phenomenon is fundamental to the formation of the cb during spermatogenesis, as it allows for the nucleolus or nucleolar fragments to maintain th ... | 2015 | 25939088 |