| [the epidemiology of chagas' disease in a rural area of the city of teresina, piauí, brazil]. | in the rural areas of teresina, 129 triatomines were captured distributed in (a) artificial ecotopes; a house with one triatoma brasiliensis, one panstrongylus geniculatus, rhodnius pictipes, and one rhodnius prolixus and in a uninhabited chicken house (7 rhodnius nasutus). (b) natural ecotopes; pahus orbignya martiana (41 rhodnius neglectus, 33 rhodnius prolixus and 41 rhodnius nasutus) and copernicia cerifera (3 rhodnius neglectus). the 22.6% of captured triatomines were infected by flagellate ... | 1992 | 1308066 |
| [the prevalence, infection indices and feeding habits of the triatominae captured in an area of epidemiological surveillance]. | prevalence of triatomines and their infection by trypanosoma cruzi, were studied during 1974-1981, in the administrative region of campinas, são paulo, brazil. this investigation was continued (1982-1986), blood meal tests with bird, marsupial, rodent and human antisera having been added. panstrongylus megistus, predominant in the region, whose winged instars are often found infected by t. cruzi in inhabited houses, displayed and alimentary eclecticism. from a sample of 7,785, 14.78 percent reac ... | 1992 | 1308951 |
| the importance of the opossum (didelphis albiventris) as a reservoir for trypanosoma cruzi in bambuí, minas gerais state. | in a survey realized on the sylvatic and peridomestic environments at bambuí county, minas gerais state, 44 (37.9%) out of 116 opossums (didelphis albiventris) captured were found to be naturally infected with trypanosoma cruzi. one hundred and forty three parasite samples were obtained from 43 infected opossums using simultaneously hemoculture, xenodiagnosis (triatoma infestans, panstrongylus megistus and rhodnius neglectus) and examination of anal glands contents. the parasite samples were cha ... | 1991 | 1842405 |
| trypanosoma cruzi and trypanosoma rangeli in saimiri sciureus from bolivia and saguinus mistax from brazil. | examination of blood films for trypanosomes in primates housed at the tulane university delta regional primate research center showed that 47% (32/68) of the bolivian saimiri sciureus and 51% (68/135) of brazilian saguinus mistax harbored one or more types: trypanosoma (schizotrypanum) cruzi in 6% to 7% and trypanosoma (herpetosoma) spp. or trypanosoma (megatrypanum) spp. in 39% and 45%, respectively. trypanosomes were isolated from a sample of the infected monkeys and morphobiological studies w ... | 1986 | 3082228 |
| [proof of the developmental stages of rhodnius neglectus by susceptibility to trypanosoma cruzi infection]. | | 1973 | 4217914 |
| [wild reservoirs and vectors of trypanosoma cruzi. 23. colonization of rhodnius neglectus lent, 1954 in man-made dwellings (hemiptera, reduviidae)]. | | 1968 | 4982470 |
| [studies of forest reservoirs and vectors of trypanosoma cruzi. 28. on finding of triatoma sordida stal, 1859 and rhodnius neglectus lent, 1954 in nests of the birds of the furnariidae family (hemiptera, reduviidae)]. | | 1968 | 5754807 |
| [occurrence and biology of rhodnius neglectus lent, 1954 in palm trees of suburban areas of belo horizonte, minas gerais]. | eighty-one "macaubeiras" palm-trees (acrocomia sclerocarpa) from the periphery of belo horizonte city were cut down and dissected between april 1979 and july 1980. 60.5% of the trees were positive for r. neglectus and 463 specimens of this insect were collected, providing a mean rate of 9,45 individuals for positive palm-trees. r. neglectus seems to present a single annual generation in this region, but evidence was obtained that two generations may occur. its spawn period is related to the hot ... | 1984 | 6443015 |
| [susceptibility of different evolutive stages of triatoma sordida ((stal, 1859) and rhodnius neglectus lent, 1954, to infection by trypanosoma cruzi]. | | 1980 | 6997935 |
| [importance of the method for obtaining feces from triatominae in the assessment of triatomine susceptibility to trypanosoma cruzi]. | two patients on the acute phase of chagas' disease were submitted to xenodiagnosis examination with different species of triatomine bugs, in order to study bug susceptibility to trypanosoma cruzi. species used were dipetalogaster maximus, rhodnius neglectus, r. prolixus, r. robustus, triatoma infestans and t. rubrovaria. both the number of infected bugs, and the number of excreted trypanosomes by bug, were used as parameters for evaluation of species susceptibility. xenodiagnosis reading was per ... | 1993 | 8115684 |
| in vivo differentiation of trypanosoma cruzi--1. experimental evidence of the influence of vector species on metacyclogenesis. | vector species has not hitherto been studied as influencing metacyclogenesis of trypanosoma cruzi, while the role of the parasite strain has been frequently stressed as of dominant importance in this process. in order to fill this gap in our knowledge, metacyclogenesis was monitored in nine triatomine species. the first part of this paper presents photographs of the main and intermediate parasite stages in each vector species studied. in the second part of the study the proportional distribution ... | 1994 | 8524063 |
| chemical constituents of essential oils of muña, bolivian plants traditionally used as pesticides, and their insecticidal properties against chagas' disease vectors. | the composition of essential oils from two muña, bolivian medicinal plants, derived from minthostachys andina and hedomea mandonianum, were analyzed by gas chromatography/mass spectrometry. major differences were observed in their chemical composition. pulegone was the major component of h. mandonianum oil (44.6%) and m. andina oil (25.5%); menthone and isomenthone were around 33% of these oils. differences were also observed in their insecticidal activity against the chagas' disease vector, rho ... | 1996 | 8771455 |
| attempts to improve xenodiagnosis: comparative test of sensibility using rhodnius neglectus, panstrongylus megistus, triatoma vitticeps and triatoma infestans in endemic areas of brazil. | from june 1984 to july 1992, 392 xenodiagnostic tests were applied on 264 patients with chronic chagas disease from brazilian endemic areas of virgem da lapa and coronel murta, situated in the jequitinhonha valley, in the state of minas gerais. the susceptibilities of rhodnius neglectus, panstrongylus megistus, triatoma vitticeps and triatoma infestans were compared. most of the time 20 nymphs (fourth instar) of each species were applied to 161 women and 103 men aged between 5 and 83 years of ag ... | 1997 | 9302418 |
| random amplification of polymorphic dna as a tool for taxonomic studies of triatomine bugs (hemiptera: reduviidae). | eleven of 27 decameric primers were found to be suitable for random amplification of polymorphic dna (rapd) from triatomine bugs on the basis that they produced discrete profiles and distinguished among panstrongylus megistus (burmeister), rhodnius prolixus stål, and triatoma infestans (klug). the legs, or single leg segments, of individual bugs were used as the source of dna so that the taxonomic value of the bug was conserved. within the scope of the specimens studied, rapd profiles allowed as ... | 1998 | 9542343 |
| the effect of azadirachtin on fresh isolates of trypanosoma cruzi in different species of triatomines. | the effect of azadirachtin was investigated using three different fresh isolates of trypanosoma cruzi and five different triatomine species which were infected as third-instar larvae. the two t. cruzi strains which originated from sylvatic triatoma vitticeps showed a high prevalence after the molt to the fifth instar in panstrongylus megistus and rhodnius neglectus and a low prevalence in triatoma infestans and rhodnius robustus. the third t. cruzi strain originating from a patient in piaui show ... | 1998 | 9569093 |
| characterization of rhodnius neglectus from two regions of brazil using isoenzymes, genitalia morphology and morphometry. | among the triatomines considered as secondary in the epidemiology of chagas disease, rhodnius neglectus is frequently captured in artificial ecotopes, especially peridomiciliary ones, rarely producing colonies indoors. nevertheless, the presence of breeding colonies in houses was unquestionably demonstrated in some areas of the state of goiás, brazil. previous isoenzyme comparisons of this species with morphologically close triatomines, such as r. prolixus, r. robustus or r. nasutus, did not pro ... | 1999 | 10224521 |
| trypanosoma cruzi: correlations of biological aspects of the life cycle in mice and triatomines. | the infection pattern in swiss mice and triatomine bugs (rhodnius neglectus) of eleven clones and the original stock of a trypanosoma cruzi isolate, derived from a naturally infected didelphis marsupialis, were biochemically and biologically characterized. the clones and the original isolate were in the same zymodeme (z1) except that two clones were found to be in zymodeme 2 when tested with g6pdh. although infective, neither the original isolate nor the clones were highly virulent for the mice ... | 1999 | 10348990 |
| [susceptibility of rhodnius neglectus, rhodnius robustus and triatoma infestans (hemiptera, reduviidae, triatominae) to infection by two strains of trypanosoma cruzi (kinetoplastidae, trypanosomatidae) using artificial xenodiagnosis]. | the susceptibility of 3rd instar nymph of triatominae rhodnius neglectus, r. robustus and triatoma infestans to trypanosoma cruzi y and amjm strains was verified using artificial xenodiagnosis. after the accomplishment of the xenodiagnosis, the faeces of the triatominae were analyzed on two-day intervals from day 5 until day 31 post infection, using the abdominal compression technique. the results showed differences in the susceptibility of the triatominae for the two strains studied, and the op ... | 2000 | 11175586 |
| phylogeny and molecular taxonomy of the rhodniini derived from mitochondrial and nuclear dna sequences. | eleven species of rhodnius and one of psammolestes were compared by dna sequence analysis of fragments of the mitochondrial large subunit ribosomal rna (mtlsurrna), the mitochondrial cytochrome b (mtcytb), and the d2 variable region of the 28s nuclear rna (d2), totaling 1,429 base pairs. the inferred phylogeny, using triatoma infestans as an outgroup, revealed two main clades within the rhodniini--one, including the prolixus group of species (rhodnius prolixus, rhodnius robustus, rhodnius neglec ... | 2000 | 11220761 |
| secondary triatomine species in dwellings and other nearby structures in municipalities under epidemiological surveillance in the state of paraná, brazil. | since data are scarce regarding secondary triatomine species in the brazilian state of paraná, this study investigated infestations in inhabited and abandoned houses and in various other nearby structures in rural areas of that state. | 2001 | 11550581 |
| fipronil insecticide: novel application against triatomine insect vectors of chagas disease. | we investigated the efficacy and the residual effect of fipronil(r) against two species of triatomine bugs, triatoma infestans and rhodnius neglectus, in laboratory conditions measuring concentration-response and residual activity on different surfaces (dried mud and lime coated mud). lethal concentrations (lc50,90) were determined on filter paper. the higher insecticide efficacy against r. neglectus when compared to t. infestans may be partially attributed to the differences in their biological ... | 2002 | 12118287 |
| high prevalence of trypanosoma rangeli and trypanosoma cruzi in opossums and triatomids in a formerly-endemic area of chagas disease in southeast brazil. | in brazil trypanosoma rangeli has been detected in humans, sylvatic mammals and vectors in the amazon basin and in wild rodents in a southern state. here we report for the first time a high prevalence of t. rangeli in opossums and triatomids captured in peridomestic environments in a formerly-endemic area of chagas disease in southeast brazil. five molecular typing tools clearly indicate the presence of t. rangeli and trypanosoma cruzi in mammalian reservoirs and triatomids. twenty-one opossums ... | 2002 | 12443797 |
| 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 |
| sampling rhodnius neglectus in mauritia flexuosa palm trees: a field study in the brazilian savanna. | two sampling methods (manual capture and live-baited adhesive traps) were compared for collecting the bug rhodnius neglectus lent (hemiptera: reduviidae: triatominae) from palm trees, mauritia flexuosa l. (arecaceae), in the savanna of brasília df. r. neglectus was found in 19/50 (38%) of palm trees sampled. the detection rate was much higher by visual inspection and manual capture (18/50=36%) than by our trapping method (5/50=10%), although one tree was found to be positive by trapping but not ... | 2003 | 12941022 |
| [spatial distribution of triatominae populations (hemiptera: reduviidae) in mauritia flexuosa palm trees in federal district of brazil]. | to determine and analyze the distribution of triatominae sylvatic populations in the federal district of brazil, 150 mauritia flexuosa palm trees were sampled in six veredas of different landscapes (sylvatic, rural and peri-urban) in the rainy season. triatomines were morphologically identified and grouped by sex and nymphal stage and were examined to verify infection by trypanosoma cruzi and trypanosoma rangeli. twenty eight (18.6%) palm trees were infested by rhodnius neglectus and fourteen (9 ... | 2004 | 15330065 |
| enzootic transmission of trypanosoma cruzi and t. rangeli in the federal district of brazil. | the federal district of brazil (df) lies within the cerrado biome, where open shrubland (savannas) is interspersed with riverside gallery forests and permanent swamps (veredas). trypanosoma cruzi-infected native triatomines occur in the area, but the enzootic transmission of trypanosomatids remains poorly characterized. a parasitological survey involving sylvatic triatomines (166 rhodnius neglectus collected from mauritia flexuosa palms) and small mammals (98 marsupials and 70 rodents, totaling ... | 2004 | 15654478 |
| susceptibility of different triatomine species to trypanosoma rangeli experimental infection. | trypanosoma rangeli is a kinetoplastid protozoan parasite that has been found in the majority of latin american countries, overlapping its distribution area with that of trypanosoma cruzi, the causative agent of chagas disease. this parasite shares the same reservoirs and vectors as t. cruzi. triatomines from genus rhodnius are considered the most susceptible hosts to infection. in this work, we report the susceptibility of different triatomine species (rhodnius neglectus, panstrongylus megistus ... | 2006 | 16584327 |
| [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 |
| [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 |
| ecology, evolution, and the long-term surveillance of vector-borne chagas disease: a multi-scale appraisal of the tribe rhodniini (triatominae). | chagas disease incidence has sharply declined over the last decade. long-term disease control will, however, require extensive, longitudinal surveillance systems capable of detecting (and dealing with) reinvasion-reinfestation of insecticide-treated dwellings by non-domiciliated triatomines. sound surveillance design calls for reliable data on vector ecology, and these data must cover different spatial scales. we conducted a multi-scale assessment of ecological and evolutionary trends in members ... | 2009 | 18619938 |
| [survey of triatominae (hemiptera: reduviidae) fauna in domestic environments and natural infection by trypanosomatidae in the state of mato grosso do sul]. | between 2000 and 2004, a survey of triatominae fauna (hemiptera: reduviidae) and examination of natural infection caused by trypanosomatidae in the state of mato grosso do sul, brazil, was conducted. a total of 13,671 specimens were collected. through fauna analysis on the insects that were caught, triatoma sordida was characterized as very abundant, very frequent, constant and dominant. the rates of natural infection with trypanosoma cruzi were 3.2% for panstrongylus geniculatus, 0.6% for rhodn ... | 2008 | 18853010 |
| predicting the potential geographical distribution of rhodnius neglectus (hemiptera, reduviidae) based on ecological niche modeling. | rhodnius neglectus is frequently found in palm trees and bird nests in sylvatic environments. however, adult specimens infected by trypanosoma cruzi have been invading houses in central brazil. analyzing and predicting the geographical distribution of this species may improve vector surveillance strategies for chagas disease. ecological niche modeling using the genetic algorithm for rule-set production (garp) was applied to predict the geographical distribution of r. neglectus from occurrence re ... | 2009 | 19645302 |
| ecological niche modelling and differentiation between rhodnius neglectus lent, 1954 and rhodnius nasutus stål, 1859 (hemiptera: reduviidae: triatominae) in brazil. | ecological niche modelling was used to predict the potential geographical distribution of rhodnius nasutus stål and rhodnius neglectus lent, in brazil and to investigate the niche divergence between these morphologically similar triatomine species. the distribution of r. neglectus covered mainly the cerrado of central brazil, but the prediction maps also revealed its occurrence in transitional areas within the caatinga, pantanal and amazon biomes. the potential distribution of r. nasutus covered ... | 2009 | 20140378 |
| occurrence of positivity for trypanosoma cruzi in triatomine from municipalities in southeastern brazil, from 2002 to 2004. | from an epidemiological point of view, more than 120 species of triatomine (hemiptera, reduviidae) are known. the occurrence and positivity for trypanosoma cruzi in triatomines in 16 municipalities of the triângulo mineiro and alto paranaíba were evaluated from january 2002 to december 2004. | 2010 | 20305960 |
| trypanosoma cruzi i genotypes in different geographical regions and transmission cycles based on a microsatellite motif of the intergenic spacer of spliced-leader genes. | the intergenic region of spliced-leader (sl-ir) genes from 105 trypanosoma cruzi i (tc i) infected biological samples, culture isolates and stocks from 11 endemic countries, from argentina to the usa were characterised, allowing identification of 76 genotypes with 54 polymorphic sites from 123 aligned sequences. on the basis of the microsatellite motif proposed by herrera et al. (2007) to define four haplotypes in colombia, we could classify these genotypes into four distinct tc i sl-ir groups, ... | 2010 | 20670628 |
| activity of some hypocrealean fungi collected in a cerrado ecosystem against rhodnius spp. (hemiptera: reduviidae) under laboratory conditions. | the hypocrealean invertebrate-pathogenic fungi lecanicillium psalliotae, paecilomyces lilacinus and pochonia chlamydosporia isolated from soils in central brazil were tested against palm-dwelling rhodnius neglectus, r. nasutus, r. prolixus, and r. robustus; all of these insects are vectors of chagas disease. particularly r. neglectus and r. nasutus, which are both important secondary intruders of human habitations were susceptible to all three of the fungi tested, and fungi sporulated successful ... | 2011 | 21251907 |
| Infestation of Mauritia flexuosa palms by triatomines (Hemiptera: Reduviidae), vectors of Trypanosoma cruzi and Trypanosoma rangeli in the Brazilian savanna. | To determine the infestation and trypanosome infection of triatomines captured in Mauritia flexuosa palm trees across its geographic distribution in the Brazilian savanna (Cerrado), we sampled 42 localities in eight states and in the Federal District, Brazil, between July 2005 and January 2010. Overall, 2154 specimens of the species Rhodnius neglectus, Psammolestes tertius, Triatoma sordida, and Microtriatoma borbai, were collected. Among the 341 palms sampled, 182 (53.3%) were infested with R. ... | 2012 | 22037200 |
| [comparative biology and feeding behavior of rhodnius neglectus and rhodnius robustus (triatominae) under laboratory conditions]. | the vector competence of triatomine insects is determined by studying their biology and feeding behavior under field and/or laboratory conditions. factors including the number of bites, the amount of blood ingested and defecation time have implications for trypanosome transmission. the biological and behavioral parameters of rhodnius neglectus and r. robustus were compared under experimental conditions to estimate differences in the potential transmission of trypanosomes. | 2011 | 21860897 |
| a deep insight into the sialome of rhodnius neglectus, a vector of chagas disease. | triatomines are hematophagous insects that act as vectors of chagas disease. rhodnius neglectus is one of these kissing bugs found, contributing to the transmission of this american trypanosomiasis. the saliva of hematophagous arthropods contains bioactive molecules responsible for counteracting host haemostatic, inflammatory, and immune responses. | 2016 | 27129103 |
| alkaline phosphatase activity in salivary gland cells of rhodnius neglectus and r. prolixus (hemiptera, triatominae). | alkaline phosphatase activity was detected in salivary gland cells of the rhodnius neglectus lent, 1954, and r. prolixus stal, 1859, vectors of trypanosoma cruzi chagas, 1909 (etiological agent of chagas disease) and t. rangeli tejera, 1920 (pathogenic to insect). the gomori technique was used to demonstrate alkaline phosphatase activity. alkaline phosphatase activity was observed throughout the entire gland, with an increased activity in the posterior region of the principal gland. in particula ... | 2016 | 27525888 |
| the exotic palm roystonea oleracea (jacq.) o.f. cook as a rural biotype for rhodnius neglectus lent, 1954, in caçu, state of goiás. | rhodnius neglectus is a triatomine that colonizes different palm species. in this study, we aimed to describe the presence of this triatomine bug in the royal palms (roystonea oleracea) in a rural region of the state of goiás. | 2014 | 25271787 |
| rhodnius barretti, a new species of triatominae (hemiptera: reduviidae) from western amazonia. | rhodnius barretti, a new triatomine species, is described based on adult specimens collected in rainforest environments within the napo ecoregion of western amazonia (colombia and ecuador). r. barretti resembles rhodnius robustus s.l., but mitochondrial cytochrome b gene sequences reveal that it is a strongly divergent member of the "robustus lineage", i.e., basal to the clade encompassing rhodnius nasutus, rhodnius neglectus, rhodnius prolixus and five members of the r. robustus species complex ... | 2013 | 24473808 |
| entoepidemiology of chagas disease in northwest são paulo and cytogenetic analysis of its main vector, triatoma sordida (hemiptera: triatominae). | one century after the discovery of chagas disease, it is still considered as a major health problem, causing more deaths in the americas than any other parasitic disease. the northwest region of são paulo, a macro-region that includes cities with a high-quality of life, has particularly high rates of chagas disease. therefore, this study aimed to assess the number of patients with chagas disease, and to identify the triatomine fauna in the northwest region of são paulo state, and to cytogenetica ... | 2013 | 24301950 |
| a novel association between rhodnius neglectus and the livistona australis palm tree in an urban center foreshadowing the risk of chagas disease transmission by vectorial invasions in monte alto city, são paulo, brazil. | after several public notifications of domiciliary invasions, palm trees were investigated in downtown monte alto city, são paulo state, brazil, in proximity to the city hall building, the main church, condominiums and marketing establishments. one hundred seventy four palm trees of 10 species were investigated, in which 72 specimens of rhodnius neglectus, a potential chagas disease vector, were captured via manual methods. all insects were collected from dead leaves, organic debris and bird nest ... | 2014 | 24145156 |
| 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 |
| entoepidemiology of chagas disease in the western region of the state of são paulo from 2004 to 2008, and cytogenetic analysis in rhodnius neglectus (hemiptera, triatominae). | to complement the epidemiological data and assist in the prophylaxis of chagas disease in the state of são paulo, we examined entomological lifting conducted in 40 municipalities of the western region of the state from 2004 to 2008, highlighted the main vector species in this region, and reanalyzed the cytogenetic characteristics of rhodnius neglectus from 3 different brazilian states (formoso/go, frutal/mg, guaíra/sp, and pitangueiras/sp). the municipalities of castilho and santo antônio do aca ... | 2015 | 26125776 |
| anatomy of the spermatophore in triatomines (hemiptera, reduviidae, triatominae) and its applications to the study of chagas disease vector biology. | the present study focused on spermatophore structure, transfer, and subsequent destination inside bloodfeeding females of the species triatoma infestans and rhodnius neglectus. the morphology of the spermatophore differed between the species studied, such that in t. infestans, the shape was ovaloid, whereas in r. neglectus, the shape resembled a rod. structures' spine-like cuticulars distributed across the inner surface of the vagina of both species were observed; however, the role of these cuti ... | 2013 | 23958911 |
| assessment of the insecticidal potential of eucalyptus urograndis essential oil against rhodnius neglectus lent (hemiptera: reduviidae). | the resistance of triatomines to pyrethroids has been reported in several latin american countries, including brazil, indicating the need for the development of new approaches for the control of vectors of the chagas disease. in here, we evaluated the insecticidal potential of the essential oil of eucalyptus urograndis (myrtaceae) against unsexed third and fourth instars of rhodnius neglectus lent (hemiptera: reduviidae) in topical application, fumigation, surface contact, and repellency . the i ... | 2013 | 23949865 |
| biocide activity of annona coriacea seeds extract on rhodnius neglectus (hemiptera: reduviidae). | the use of synthetic insecticides for insect control may lead to different kind of problems, such as vector resistance to insecticides. to avoid these problems, a new research area to study botanical products as possible disease vectors controls, has become a feasible alternative. the purpose of this research was to evaluate the biocide activity of the ethanol extract of seeds of annona coriacea on rhodnius neglectus (chagas disease vector) nymphs and adults. for this, different concentrations e ... | 2013 | 23894992 |
| scanning electron microscopy of the rhodnius neglectus (hemiptera) labial salivary glands after starvation. | labial salivary glands are found in the majority of insects. they are relatively large, extend back into the thorax, and in rhodnius, they are cherry red in color due to a pigment derived from traces of hemoglobin absorbed form the gut. in most insects they are acinous shaped, with long excretion channels that present differentiated regions which from salivary reservoirs. the glands may be relatively simple or complexly branched and convoluted. in rhodnius they are described as being unilobed wi ... | 1993 | 8250270 |