| lethality of triatomines (hemiptera: reduviidae), vectors of chagas' disease, feeding on blood baits containing synthetic insecticides, under laboratory conditions. | a laboratory study was conducted to test the toxicity of synthetic insecticides added to defibrinated sheep blood kept at room temperature and offered as food to the following triatomine species: triatoma infestans, panstrongylus megistus, triatoma vitticeps, triatoma pseudomaculata, triatoma brasiliensis and rhodnius prolixus. the insecticides used, at a concentration of 1 g/l, were: hch, ddt, malathion and trichlorfon, and the lethalithy observed at the end of a 7-day period varied according t ... | 1991 | 1726952 |
| cytogenetics of triatominae: ii-spermatogenesis in hybrid between triatoma infestans and triatoma pseudomaculata (hemiptera, reduviidae) | | 1974 | 4618618 |
| [description of triatoma pseudomaculata, a new species of triatominae of sobral, ceará (hemiptera, reduviidae)]. | | 1964 | 4959506 |
| [biogeography, origin, and distribution of triatominae domiciliarity in brazil. revista de saúde pública, 14(3):265-99, 1980]. | an association is established between the brazilian geographical pattern of the domiciliarity of the triatominae bugs and open lands characterized by natural savanna vegetation or artificial, man-made landscapes. the brazilian open lands involved are the "caatingas'' and "cerrados", both wholly included in brazilian territory, while the mixed southern subtropical prairies belong to systems extending bevond national boundary lines. the other open lands are anthropic-lands opened mainly by the des ... | 2006 | 17173153 |
| behavioral plasticity of triatominae related to habitat selection in northeast brazil. | triatoma pseudomaculata corrêa and espínola, 1964 and triatoma juazeirensis costa and felix, 2007 ( = t. brasiliensis neiva, 1911 [part]), are sylvatic vectors of trypanosoma cruzi (chagas, 1909), the causative agent of chagas disease, in northeast brazil-especially in the caatinga region. in an area of caatinga in the state of bahia, we compared the wild and peridomestic habitats of these two species of triatominae to assess their behavioral plasticity in relation to habitat selection in differ ... | 2008 | 18283937 |
| domiciliation of triatoma pseudomaculata (corrêa e espínola 1964) in the jequitinhonha valley, state of minas gerais. | impact of the vector control program was evaluated eight years after implantation of epidemiological surveillance for chagas disease in berilo, a municipality in the jequitinhonha valley of the brazilian state of minas gerais. in all 5,242 domiciliary units (96% of the total) were inspected and 10 found to be infested by the triatomine bug triatoma pseudomaculata. triatomines were found associated with bats inside one house and in the peridomiciles of the other nine. none of the 111 triatoma pse ... | 2007 | 17876457 |
| biological aspects of crosses between triatoma maculata (erichson, 1848) and triatoma pseudomaculata corrêa & espínola, 1964 (hemiptera: reduviidae). | due to morphological similarities between triatoma maculata and t. pseudomaculata, which comprise the "maculate complex", both had been regarded as the same species until 1964. considering that the studies on triatomine hybridization permit hypotheses formulation concerning origin and divergence of species, enabling a quantitative analysis of taxonomic relationships between species, the present investigation was aimed at broadening further understanding related to the capacity of hybrid producti ... | 2007 | 17612773 |
| [geographical distribution and indicators entomologic of sinantropic triatomines captured in the state of goiás]. | the geographic distribution of triatomines in goiás and entomological indicators in the home environment are presented: home infestation, home triatomine density and vector infection by trypanosoma cruzi. the indicators studied were from triatomines captured inside and outside homes in 201 municipalities in the state of goiás, brazil, between 2000 and 2003. a total of 249,868 home units were investigated and 51,570 triatomines were captured, and 335 specimens were found to be infected with trypa ... | 2007 | 17568889 |
| evolutionary relationships based on genetic and phenetic characters between triatoma maculata, triatoma pseudomaculata and morphologically related species (reduviidae: triatominae). | the maculata group currently comprises two species of triatominae, triatoma maculata and triatoma pseudomaculata, which share morphologic and chromatic characteristics. in order to clarify the systematic status of these two vectors of trypanosoma cruzi and to infer their evolutionary relationships, we performed an enzymatic, morphometric and cytogenetic comparison of them, also taking into account two sister species not included in the group (t. arthurneivai and t. wygodzinskyi). according to ou ... | 2007 | 17336167 |
| the use of aggregation signals by triatoma brasiliensis (heteroptera: reduviidae). | triatoma brasiliensis is considered the main vector of chagas disease in the semiarid zones of north-eastern brazil. in this work, we describe the spatial pattern of defecation in t. brasiliensis and the spatial relationship of faeces with the shelters of these bugs. afterwards, we analyse the attraction response of t. brasiliensis larvae to potential odour cues present in their dry faeces, to substances present in their cuticule (footprints) and to the dry faeces of triatoma pseudomaculata. we ... | 2007 | 17306752 |
| flight dispersal of the chagas disease vectors triatoma brasiliensis and triatoma pseudomaculata in northeastern brazil. | the present paper reports for the first time the capture of wild triatoma brasiliensis and triatoma pseudomaculata by means of light traps in brazil. we tested commercially available lighting devices powered by batteries to attract the bugs to a white piece of cloth in the field. two main findings showed to be significant: first, the results presented here show that light traps can be used for sampling these species in wild environments; second, they reveal that house colonization by triatomines ... | 2007 | 17292320 |
| peridomestic structure, farming activity and triatomine infestation. | the role of peridomestic structure and farming activity on triatomine infestation was studied on two vector species of chagas disease (triatoma pseudomaculata and t. brasiliensis) in bahia state, northeastern brazil. a randomly selected population issued from 136 farms was divided into four categories according to the householder activity. at regional scale, the dwellings of farmers working on degraded land of irrigated farms are less exposed to t. pseudomaculata infestation. at premises scale, ... | 2006 | 17007216 |
| aspects of peridomiciliary ecotopes in rural areas of northeastern brazil associated to triatomine (hemiptera, reduviidae) infestation, vectors of chagas disease. | artificial ecotopes of 121 peridomiciliary environments in four rural localities in the state of ceará, brazil, were studied and the type of material of the ecotopes was identified as triatomine infestation. two thousand two hundred and four triatoma brasiliensis neiva, 340 triatoma pseudomaculata corrêa and espínola, 121 rhodnius nasutus stall, and 5 panstrongylus lutzi (neiva and pinto) were captured. out of the 323 ecotopes found (x = 2.0 +/- 1.8 per dwelling) - such as pigpens, henhouses, co ... | 2006 | 16830706 |
| [triatominae and cactaceae: a risk for the transmission of the american trypanosomiasis in the peridomicilary space (northeast brazil)]. | field observations carried in semi-arid brazil northeast point out the frequent association, in the peridomiciliary space, between a cactus, cereus jamacaru, the occurrence of nests in its branches and the occurrence of two species of insects vectors of trypanosoma cruzi, pathogenic agent of chagas disease: rhodnius neglectus and triatoma pseudomaculata. the analysis of the architectural variables of this cactaceae shows that the presence of nests, and thus of insects, depends on the traditional ... | 2006 | 16800127 |
| Investigation of Chagas disease in four periurban areas in northeastern Brazil: epidemiologic survey in man, vectors, non-human hosts and reservoirs. | Chagas disease was investigated in four periurban areas of Ceará state, northeastern Brazil, through serological, parasitological and molecular methods in humans, reservoirs and vectors. A cross-sectional survey revealed a seroprevalence rate of 1.2% (13/1076 residents, six also proving positive through PCR). Trypanosoma cruzi infection was not detected in children under 10 years old. Triatoma pseudomaculata prevailed in the peridomiciles: 63 specimens, 69% (34/49) infected with trypanosomatids. ... | 2011 | 22136953 |
| risk factors for reinvasion of human dwellings by sylvatic triatomines in northern bahia state, brazil. | the aim of this study in curaça, bahia, northeast brazil was to explore possible factors associated with the infestation of human dwellings by triatoma brasiliensis or triatoma pseudomaculata, two sylvatic triatomine species. we use multiple logistic regression analysis to show how structural features of the peridomiciliary area combine with the number of animals and sociological factors to allow infestation of some dwellings. it is suggested that t. brasiliensis is associated with human activit ... | 2005 | 15868058 |
| characterization of the microbiota in the guts of triatoma brasiliensis and triatoma pseudomaculata infected by trypanosoma cruzi in natural conditions using culture independent methods. | chagas disease is caused by trypanosoma cruzi, which is transmitted by triatomine vectors. the northeastern region of brazil is endemic for chagas disease and has the largest diversity of triatomine species. t. cruzi development in its triatomine vector depends on diverse factors, including the composition of bacterial gut microbiota. | 2015 | 25903360 |
| [feeding patterns of triatoma pseudomaculata in the state of ceara, brazil]. | t. pseudomaculata, a peridomicilar species, has low rates of t. cruzi infection. the occurrence of this triatomine in the domicile and its feeding patterns was investigated to identify potential t. cruzi reservoirs. | 2005 | 15654457 |
| influence of the blood meal source on the development of triatoma infestans, triatoma brasiliensis, triatoma sordida, and triatoma pseudomaculata (heteroptera, reduviidae). | the objective of this study was to determine the influence of the blood meal source on the life cycle and reproductive development of female triatoma infestans (klug, 1834), triatoma brasiliensis neiva, 1911, triatoma sordida (stal, 1859), and triatoma pseudomaculata corrga & espfinola, 1964. in all triatomine species studied the life cycle was shorter for the groups fed on mice than for those fed on pigeons, the range of differences being between 1.5 times (t pseudomaculata and t. infestans) an ... | 2000 | 15535580 |
| [influence of anthropic habits in the dispersion of triatoma pseudomaculata corrêa & espínola, 1964 through mimosa tenuiflora (willdenow) (mimosaceae) in the state of ceará, brazil]. | triatoma pseudomaculata was captured in the phloem of the black acacia bush (mimosa tenuiflora) in seven municipalities in the state of ceará, brazil. this bush is widespread in the caatinga (scrub forest) and is used extensively by the rural population for kindling. peridomiciliary presence of triatomines in the cariri region may be associated with the use of infested m. tenuiflora wood by the population, thus facilitating the triatomines' mobilization and dispersion. | 2004 | 15029337 |
| 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 |
| 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 |
| in vivo and in vitro metacyclogenesis tests of two strains of trypanosoma cruzi in the triatomine vectors triatoma pseudomaculata and rhodnius neglectus: short/long-term and comparative study. | metacyclogenesis of trypanosoma cruzi of the y and berenice strains was studied in triatoma pseudomaculata and rhodnius neglectus. results in vivo showed a higher production of metacyclic trypomastigotes in r. neglectus' digestive tube than in t. pseudomaculata. in vitro experiments were also carried out in order to compare the behavior of culture forms of t. cruzi incubated in extracts of different compartments (stomach, intestine, and rectum) of the digestive tract of both species of triatomin ... | 2003 | 12880586 |
| aggregation mediated by faeces and footprints in triatoma pseudomaculata (heteroptera: reduviidae), a chagas disease vector. | the behavioural response of triatoma pseudomaculata to chemical substances present in their faeces or cuticle (footprints) was analyzed. groups of larvae were simultaneously exposed to a clean filter paper and to another paper impregnated with a chemical stimulus in a circular arena. in these choice experiments, the insects aggregated significantly around papers impregnated with dry faeces. in addition, the bugs also showed a significant aggregation response to papers impregnated with compounds ... | 2002 | 12386711 |
| [focal and total residual insecticide spraying to control triatoma brasiliensis and triatoma pseudomaculata in northeast brazil]. | to efficiently control the triatomines triatoma brasiliensis and triatoma pseudomaculata, a field trial was performed to compare conventional versus focal spraying of deltamethrin 5% sc at 25 mg a. i./m2 and the slow-release organophosphate malathion 8.3% sr at 2g a. i./m2. the assay took place in the county of boa viagem, ceará state, with 1541 households, randomly separated into 4 groups. two of them received focal spraying: pt, treated with deltamethrin indoors and in the peridomicile, and pl ... | 2000 | 11119328 |
| [operational aspects of triatoma brasiliensis control]. | vector control strategies against indigenous species is not easy, due to their capacity to reinvade treated premises from sylvatic ecotopes. between august 1996 and december 1997 we conducted a study on reinfestation of houses after spraying in a county in the state of ceará. of 277 houses examined, 113 (40.8%) were infested (21.7% intradomiciliary and 35.4% peridomiciliary). of the 433 triatominae collected, 207 were triatoma brasiliensis (49% of which intradomiciliary, with a mean of 1.8 insec ... | 2000 | 11119320 |
| [general situation and perspectives of chagas disease in northeastern region, brazil]. | primary and secondary data show the importance and distribution of human chagas disease (hcd) in northeast brazil. among the 27 detected vector species, triatoma infestans, panstrongylus megistus, triatoma brasiliensis and triatoma pseudomaculata are epidemiologically important. major medical impact is attributed to t. infestans and p. megistus, the most domiciliated and vulnerable species, while the other two are native and more difficult to control. regional differences in transmission and med ... | 2000 | 11119317 |
| performance of yeast-baited traps with triatoma sordida, triatoma brasiliensis, triatoma pseudomaculata, and panstrongylus megistus in laboratory assays. | the effectiveness of a trap for triatomines baited with yeast cultures has been previously demonstrated for triatoma infestans in laboratory assays. we report here results from laboratory assays testing yeast traps for triatoma sordida, triatoma brasiliensis, triatoma pseudomaculata, and panstrongylus megistus. all assays were conducted in an open experimental arena 100 cm x 100 cm, with two traps placed at opposite sides of the arena. one of the traps contained a yeast culture, and the other tr ... | 2000 | 10949899 |
| comparison of feeding behaviour of triatoma infestans, triatoma brasiliensis and triatoma pseudomaculata in different hosts by electronic monitoring of the cibarial pump. | feeding behaviour of triatoma infestans, t. brasiliensis and t. pseudomaculata on pigeons and mice was compared by electronic monitoring of the cibarial pump. the methodology developed permits the study detailed of triatomine feeding behaviour using an artificial feeder as well as on live hosts. t. infestans was the species that fed most rapidly on the two hosts tested (28.03+/-1.6 mg/min for pigeon and 21.33+/-1.7 mg/min for mouse), followed by t. brasiliensis (17.09+/-1.4 mg/min and 13.1+/-1.5 ... | 2000 | 10817838 |
| feeding behavior of different species of chagas' disease vectors stimulated with blood sources at different temperatures. | 1. the feeding behavior of six triatomid species toward latex condoms filled with blood at 26 +/- 1 and 36 +/- 1 degrees c was observed for 4 h. 2. the species studied were triatoma infestans, triatoma brasiliensis, triatoma vitticeps, triatoma pseudomaculata, rhodnius prolixus and panstrongylus megistus, and 34 to 348 insects were studied in each group (average, 190). all the life stages of each species were used. 3. although most insects (80%, average for 6 species) preferred the warmer blood, ... | 1992 | 1304939 |
| [triatominae species] | this paper provides a checklist of 15 known species of the triatominae subfamily in maranhão state. on the coastal são luís island there are a total of 10 species associated with sylvatic areas (eratyrus mucronatus, psammolestes tertius, panstrongylus diasi) and periurban and urban areas (panstrongylus geniculatus, panstrongylus lignarius, rhodnius nasutus, rhodnius neglectus, rhodnius pictipes, rhodnius robustus and triatoma rubrofasciata). the last was found only on são luís island, while the ... | 1998 | 9592224 |
| description of the feeding preferences of triatominae in the chagas disease surveillance study for the state of pernambuco, brazil (hemiptera: reduviidae). | studying the feeding preferences of triatomines is an important entomological surveillance tool, since continuous surveillance of the disease is necessary. | 2017 | 28954078 |
| population dynamics and feeding behavior of triatoma brasiliensis and triatoma pseudomaculata, main vectors of chagas disease in northeastern brazil. | biological parameters of triatoma brasiliensis and t. pseudomaculata that could influence the epidemiological importance of these insects as vectors of trypanosoma cruzi were compared. the parameters studied were incubation period, interval between hatching or moulting and first feeding, number of blood meals, development time, mortality, net reproductive rate, instantaneous daily reproductive rate, time-lapse before starting feeding, duration of feeding, blood ingestion capacity, occurrence of ... | 2000 | 10733731 |
| [various aspects of the biology of triatoma pseudomaculata corrêa & espínola, 1964, in laboratory conditions (hemiptera:reduviidae:triatominae)]. | observations were made on the evolutive cycle of triatoma pseudomaculata, held under laboratory conditions, fed weekly on bird (pigeon). of 60 eggs obtained, only 34 nymphs reached the adult stage in a period of x(s) = 398 +/- 76 days. the following parameters were observed: the time immature stages took to develop from egg to adult emergence; the occurrence of the first meal; the time-lapse between the presenting of the blood-meal and the beginning of feeding; time of feeding; amount of blood i ... | 1997 | 9332591 |
| [epidemiology of chagas disease in the municipalities of castelo do piaui and pedro ii, state of piaui, brazil]. | triatoma brasiliensis, triatoma pseudomaculata and rhodnius nasutus were captured in artificial and natural echotopes in ten localities situated in rural areas of castelo do piauí and pedro ii, state of piauí, brazil. nymphal instars predominated and birds were the main blood meal source for triatomines. t. brasiliensis was the only triatomine captured inside the houses searched, harbouring flagellates morphologically and biologically indistinguishable from trypanosoma (schizotrypanum) cruzi. sp ... | 1989 | 2517851 |
| 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 |
| genetic polymorphism in trypanosoma cruzi i isolated from brazilian northeast triatomines revealed by low-stringency single specific primer-polymerase chain reaction. | different molecular markers have been employed for typing trypanosoma cruzi strains from endemic areas of chagas disease. the low-stringency single specific primer-polymerase chain reaction (lssp-pcr) has been a sensitive and informative technique that uses the variable region of kinetoplast dna minicircles as a genetic marker, allowing detection of dna sequence variation. in the present study, we analyzed the intra-lineage genetic variability of the t. cruzi strains obtained from triatomine fec ... | 2008 | 18633644 |
| [epidemiology of chagas disease in four rural localities in jaguaruana, state of ceará: seroprevalence of infection, parasitemia and clinical characteristics]. | a cross-sectional study on chagas disease that examined the populations of four localities (n masculine = 541 inhabitants) in the municipality of jaguaruana, state of ceará, showed seroprevalence of chagas infection of 3.1%, as assessed by indirect immunofluorescence, indirect hemagglutination and elisa tests. the rate was higher among adults over 50 years old, without any difference in relation to sex. positive parasitemia was found in 11.8% (2/17) of the seropositive individuals by means of in ... | 2008 | 18853005 |
| the association between the geographic distribution of triatoma pseudomaculata and triatoma wygodzinskyi (hemiptera: reduviidae) with environmental variables recorded by remote sensors. | in this study, predictive models of geographic distribution patterns of triatoma pseudomaculata (tps) and t. wygodzinskyi (twy) were carried out. they were based on biophysical variables estimated from information provided by the satellite remote sensors avhrr (advanced very high resolution radiometer) and modis (moderate-resolution imaging spectroradiometer). our goal was to analyze the potential geographic distribution of tps and twy and to assess the performance of three predictive models (on ... | 2009 | 18992369 |
| surveillance of chagas disease vectors in municipalities of the state of ceará, brazil. | the present study aimed to analyse the dwelling infestation rates and the distribution and natural trypanosoma cruzi infection rates, among triatomines captured in the 13 municipalities of the state of ceará. the records relating to the capture of intradomicile and peridomicile triatomines during the chagas disease control program of 1998-2008 were available. among the triatomines captured and in all of the municipalities studied, triatoma brasiliensis presented the highest incidence in intradom ... | 2009 | 20140377 |
| entomological surveillance of chagas disease in berilo municipality, jequitinhonha valley, state of minas gerais, brazil. | this study aimed to evaluate the chagas disease control program which has operated since 1982 in the municipality of berilo in the jequitinhonha valley, minas gerais, brazil, based on evaluation of 5,242 domiciliary units (dus) and 7,807 outbuildings over an eight-year period of epidemiological surveillance implanted in 1997. a total of 391 triatomines (280 panstrongylus megistus and 111 triatoma pseudomaculata) were captured, indicating the continued predominance of the former species. however, ... | 2009 | 20209342 |
| comparative biology of the two sister species of triatominae (hemiptera: reduviidae). | triatoma pseudomaculata and t. wygodzinskyi (hemiptera: reduviidae: triatominae) are two brazilian vectors of chagas disease. the first is an arboricolous species in sylvatic environment and considered a vector of t. cruzi in peridomestic structures; the second, a rupicolous species in the wild environment of no epidemiological importance. in order to test the assumption that sister species share biological traits, comparative studies of their development cycle and blood ingestion were conducted ... | 2010 | 20305961 |
| [summary of results from the national surveys]. | this article aims to correlate the main results of three large national surveys on chagas disease (entomologic, seroprevalence and electrocardiographic) carried out in brazil from late 1970's to early 1980's, which served as baseline for definition of the control measures adopted in the country. the proportion of infected people was much higher in areas where triatoma infestans, the most efficient vector of chagas disease among the five principal species involved in transmission at that time, wa ... | 2011 | 21584357 |
| [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 |
| molecular identification of food sources in triatomines in the brazilian northeast: roles of goats and rodents in chagas disease epidemiology. | we used the gut contents of triatomines collected from rural areas of ceará state, northeastern brazil, to identify their putative hosts via vertebrate cytb gene sequencing. successful direct sequencing was obtained for 48% of insects, comprising 50 triatoma brasiliensis, 7 triatoma pseudomaculata, and 1 rhodnius nasutus. basic local alignment search tool (blast) procedure revealed that domestic animals, such as chickens (gallus gallus) and goats (capra hircus), are the main food source, includi ... | 2015 | 26350453 |
| community-based entomological surveillance reveals urban foci of chagas disease vectors in sobral, state of ceará, northeastern brazil. | the aim of this work was to explore the potential risk of vector-borne chagas disease in urban districts in northeastern brazil, by analyzing the spatiotemporal distributions and natural infection rates with trypanosoma cruzi of triatomine species captured in recent years. the main motivation of this work was an acute human case of chagas disease reported in 2008 in the municipality of sobral. | 2017 | 28103294 |
| characteristics of triatomine infestation and natural trypanosoma cruzi infection in the state of rio grande do norte, brazil. | introduction natural and artificial ecotope infestation by the kissing bug triatomines and their colonization and infection by trypanosoma cruzi , the chagas disease agent, were evaluated in nine municipalities of the state of rio grande do norte, brazil. methods following identification, triatomine intestinal contents were analyzed by direct microscopic examination, xenoculture, and polymerase chain reaction (pcr) for parasite detection. trypanosoma cruzi isolates were genotyped using three dif ... | 2016 | 27163565 |
| triatominae survey (hemiptera: reduviidae: triatominae) in the south-central region of the state of bahia, brazil between 2008 and 2013. | triatomine surveillance in rural areas, artificial ecotypes, and natural ecotopes of the cities of caturama, ibipitanga, macaúbas, and seabra in the south-central region of the brazilian state of bahia was carried out between 2008 and 2013. natural infection by trypanosoma cruzi was evaluated in the specimens collected to monitor vectors of chagas disease. a total of 1,357 specimens were collected, and four species were identified: triatoma sordida (83%), triatoma lenti (16.4%), triatoma pseudom ... | 2015 | 25802433 |
| the main sceneries of chagas disease transmission. the vectors, blood and oral transmissions--a comprehensive review. | this review deals with transmission of trypanosoma cruzi by the most important domestic vectors, blood transfusion and oral intake. among the vectors, triatoma infestans, panstrongylus megistus, rhodnius prolixus, triatoma dimidiata, triatoma brasiliensis, triatoma pseudomaculata, triatoma sordida, triatoma maculata, panstrongylus geniculatus, rhodnius ecuadoriensis and rhodnius pallescens can be highlighted. transmission of chagas infection, which has been brought under control in some countrie ... | 2015 | 25466622 |
| occurrence of synanthropic triatomines (hemiptera: reduviidae) in the federal district of brazil. | entomological surveillance of chagas disease in the federal district of brazil (df), has recorded the following triatomine species: panstrongylus megistus, p. geniculatus, p. diasi, rhodnius neglectus, triatoma pseudomaculata, and t. sordida. we aimed to analyze the spatial and temporal occurrence of triatomine species collected in df, and their indices of natural infection with trypanosomes. | 2012 | 22370832 |
| synanthropic triatomines (hemiptera, reduviidae) in the state of pernambuco, brazil: geographical distribution and natural trypanosoma infection rates between 2006 and 2007. | the present study shows a descriptive analysis of triatomine occurrence and its natural trypanosoma infection rates in the state of pernambuco, brazil, between 2006 and 2007. | 2012 | 22370830 |
| [peridomiciliary changes and implications for triatoma brasiliensis control]. | a total of 9,906 annexes from 1,541 rural dwellings of boa viagem county, ceará, brazil, infested by triatoma brasiliensis and triatoma pseudomaculata were investigated and immediately sprayed with pyrethroid insecticide, followed by revisions at 6, 12, and 18 months. the initial infestation rate of annexes was 4.0%, with predominant infestation in animal shelters (7.0%). mean insect density was low, regardless of triatomine species or type of annex. a progressive decrease in the number of initi ... | 2000 | 11119322 |
| cytogenetic analysis of triatoma pseudomaculata corrêa and espínola, 1964 (hemiptera, triatominae) from different brazilian states. | triatoma maculata and t. pseudomaculata are allopatric; however, it is believed that t. maculata was introduced into the brazilian northeast by passive transportation of the nymphs between the feathers of migratory birds, followed by the speciation of t. pseudomaculata. t. pseudomaculata is the second most epidemiologically important species in the northeast of brazil after t. brasiliensis. therefore, given the broad range of t. pseudomaculata, the objective of the present study was to cytogenet ... | 2016 | 27051018 |
| marking triatoma brasiliensis, triatoma pseudomaculata and rhodnius nasutus nymphs with trace elements: element persistence and effects of marking on insect mortality. | field ecologists often rely on mark-release-recapture (mrr) experiments to estimate population dynamics parameters for a given species. in the case of a medically important taxon, i.e., a disease vector, inferences on species survival and dispersal rates are particularly important as they have the potential to provide insights into disease transmission dynamics in endemic areas. medical entomologists have traditionally used fluorescent dusts to externally mark the cuticle of insects. however, du ... | 2016 | 27027503 |
| sylvatic and peridomestic populations of triatoma pseudomaculata are not significantly structured by habitat, as revealed by two genetic markers. | chagas disease remains a public health concern in brazil and other latin american countries, mainly due to the potential domiciliation of native triatomine species. we analyzed the genetic variability of triatoma pseudomaculata in sylvatic and peridomestic ecotopes throughout three localities in the northeastern state of bahia, brazil. we studied polymorphisms generated by random amplified polymorphic dna (rapd) and isoenzyme electrophoresis analyses. based on rapd analysis, each specimen was as ... | 2010 | 21175934 |
| inferences about antennal phenotype: the "triatoma maculata complex" (hemiptera: triatominae) is valid? | the "triatoma maculata complex" is presently formed by two epidemiologically important species of triatominae, triatoma maculata and triatoma pseudomaculata, which share morphologic and chromatic characteristics. in order to clarify the systematic status and infer the evolutionary relationships of these vectors of chagas disease, we performed a comparative analysis of their antennal phenotype, taking also into account triatoma wygodzinskyi, a possible sister species. the comparison was based on ... | 2008 | 18282553 |
| chagas disease ecoepidemiology and environmental changes in northern minas gerais state, brazil. | triatoma sordida and triatoma pseudomaculata are frequently captured triatomine species in the brazilian savannah and caatinga biomes, respectively, and in brazilian domiciles. | 2017 | 29091136 |
| behavioral evidence of an ectoparasitic interaction between triatoma pseudomaculata corrêa e espínola (heteroptera: reduviidae) and periplaneta americana (l.) (blattodea: blattidae). | the present work tested whether triatoma pseudomaculata corrêa & espínola shows behavioral traits indicating that it is capable of feeding on arthropods. we consistently observed nymphs extending their proboscis in the direction of cockroaches and attempting to bite. insects presented a preference for biting specific cockroach body parts. our results suggest that arthropod hemolymph represents an alternative source of food that increases the survival of t. pseudomaculata individuals undergoing l ... | 2013 | 23939280 |
| [bionomy of triatoma pseudomaculata correa and spinola, 1964, in the laboratory]. | | 1972 | 4590150 |
| [biological potential of triatoma brasiliensis]. | biological and physiological parameters of triatoma brasiliensis, triatoma infestans, and triatoma pseudomaculata were studied and compared. t. brasiliensis, reared on mice, showed a faster evolutionary cycle from first stage to adult and higher fecundity, when compared to the other species. t. infestans showed the fastest blood intake in both hosts tested, followed by t. brasiliensis and t. pseudomaculata. clotting tests using salivary gland extracts of t. brasiliensis presented intermediary va ... | 2000 | 11119327 |