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1.
Rev. bras. entomol ; 64(4): e20200086, 2020. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1156000

ABSTRACT

ABSTRACT Stick insects (Phasmatodea) are among the least studied insect groups in Brazil. Although in recent years there has been an increase in the number of published studies on taxonomy and morphology of Brazilian stick insects, they remain very little-known concerning biological and bionomic aspects. From five females of Cladoxerus cryphaleus (Phasmatidae: Cladomorphinae) collected in the Iguaçu National Park, Paraná, Brazil, a captive colony of parthenogenetic females was started, based on which data on longevity, fertility, and viability of eggs of this species were recorded for the first time. After imaginal molting, the 21 females studied had an average longevity of 103.7 days. Each female produced on average 125.3 eggs, which had a hatching rate of 34.2%. In addition, we recorded a C. cryphaleus male nymph being parasitized by a biting midge of the subgenus Forcipomyia (Microhelea) (Diptera: Ceratopogonidae). The male, in pre-imaginal instar and already parasitized, was collected in the municipality of Petrópolis, Rio de Janeiro.

2.
Mem. Inst. Oswaldo Cruz ; 108(6): 785-789, set. 2013. tab, graf
Article in English | LILACS | ID: lil-685494

ABSTRACT

Triatoma brasiliensis macromelasoma is revalidated based on the results of previous multidisciplinary studies on the Triatoma brasiliensis complex, consisting of crossing experiments and morphological, biological, ecological and molecular analyses. These taxonomic tools showed the closest relationship between T. b. macromelasoma and Triatoma brasiliensis brasiliensis. T. b. macromelasoma is redescribed based on specimens collected in the type locality and specimens from a F1 colony. The complex now comprises T. b. brasiliensis, T. b. macromelasoma, Triatoma melanica, Triatoma juazeirensis and Triatoma sherlocki. An identification key for all members of the complex is presented. This detailed comparative study of the morphological features of T. b. macromelasoma and the remaining members of the complex corroborates results from multidisciplinary analyses, suggesting that the subspecific status is applicable. This subspecies can be distinguished by the following combination of features: a pronotum with 1+1 narrow brownish-yellow stripes on the submedian carinae, not attaining its apex, hemelytra with membrane cells darkened on the central portion and legs with an incomplete brownish-yellow ring on the apical half of the femora. Because the T. brasiliensis complex is of distinct epidemiological importance throughout its geographic distribution, a precise identification of its five members is important for monitoring and controlling actions against Chagas disease transmission.


Subject(s)
Animals , Female , Male , Triatoma/classification , Insect Vectors/anatomy & histology , Insect Vectors/classification , Reduviidae/anatomy & histology , Reduviidae/classification , Triatoma/anatomy & histology , Triatominae/anatomy & histology , Triatominae/classification
3.
Mem. Inst. Oswaldo Cruz ; 104(supl.1): 46-51, July 2009.
Article in English | LILACS | ID: lil-520865

ABSTRACT

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 triatomines as a basis for new strategies for monitoring and controlling the vectorial transmission are discussed here. The importance of ongoing long-term monitoring activities for house infestations by T. infestans, Triatoma brasiliensis, Panstrongylus megistus, Triatoma rubrovaria and R. prolixus is also stressed, as well as understanding the invasion by sylvatic species. Moreover, the insecticide resistance is analysed. Strong efforts to sustain and improve surveillance procedures are crucial, especially when the vectorial transmission is considered interrupted in many endemic areas.


Subject(s)
Animals , Humans , Chagas Disease/prevention & control , Insect Control/methods , Insect Vectors/classification , Triatominae/classification , Chagas Disease/transmission
4.
Rev. bras. cir. cardiovasc ; 24(1): 64-67, Jan.-Mar. 2009. ilus
Article in Portuguese | LILACS | ID: lil-515588

ABSTRACT

OBJETIVO: Desenvolver um sistema de diálise peritoneal pediátrico totalmente fechado, de fácil manejo e avaliar o nível de garantia de esterilidade. MÉTODOS: No período de fevereiro a dezembro de 2008, foi idealizado e desenvolvido junto ao Setor de Bioengenharia da Braile Biomédica Indústria, Comércio e Representações S/A® um sistema de diálise peritoneal pediátrico fechado. Foram construídos 20 sistemas submetidos a testes quanto à garantia do nível de esterilidade, sendo divididos em grupo A (n=10), utilizando-se teste de esterilidade, e B (n=10), penetração do gás óxido de etileno. RESULTADOS: No grupo A, o teste de esterilidade foi negativo para a proliferação de bactérias e fungos em 14 dias, em todos os sistemas. No grupo B, o teste de penetração de gás demonstrou que houve penetração de gás em todos os pontos avaliados. CONCLUSÃO: Foi possível desenvolver um novo sistema de diálise peritoneal pediátrico fechado de fácil manuseio e garantir sua esterilização.


OBJECTIVE: To develop an easy-handling totally closed pediatric peritoneal dialysis system and assess the sterility assurance level. METHODS: From February to December 2008 was designed and developed a closed-system pediatric peritoneal dialysis at the Bioengineering Division of Braile Biomédica Indústria, Comércio e Representações S/A®. Twenty systems were manufactured and submitted to sterility assurance level testing, and were divided into Group A (10) - using the sterility test - and B (10) - ethylene oxide gas penetration. RESULTS: In Group A, the sterility test was negative for bacteria and fungi proliferation within 14 days in all systems. In Group B, the gas penetration test showed that there was gas penetration in all points assessed. CONCLUSIONS: It was possible to develop a new easy-handling closed-system pediatric peritoneal dialysis and ensure its sterility.


Subject(s)
Child , Humans , Peritoneal Dialysis/instrumentation , Sterilization/standards , Bacteria/growth & development , Ethylene Oxide/analysis , Fungi/growth & development , Gases/analysis , Membranes, Artificial , Sterilization/methods
5.
In. Carvalheiro, José da Rocha; Azevedo, Nara; Araújo-Jorge, Tania C. de; Lannes-Vieira, Joseli; Klein, Lisabel. Clássicos em doença de Chagas: história e perspectivas no centenário da descoberta. Rio de Janeiro, Fiocruz, 2009. p.351-356.
Monography in Portuguese | LILACS | ID: lil-535936

ABSTRACT

Revisões históricas aos avanços científicos para o controle da doença, o Simpósio Internacional Comemorativo do Centenário da Descoberta da Doença de Chagas (1909-2009).


Subject(s)
Humans , Chagas Disease/history , Chagas Disease/prevention & control , Hexachlorocyclohexane/administration & dosage , Hexachlorocyclohexane/history , Triatominae , History of Medicine , Vector Control of Diseases
6.
Parasitol. latinoam ; 63(1/4): 34-39, Dec. 2008. tab
Article in English | LILACS | ID: lil-551389

ABSTRACT

The aim of this study was to evaluate the enteroparasite and commensal occurrence in inhabitants living in the city of Abadia dos Dourados, Minas Gerais, Brazil. Three hundred and seventy six people were selected at random, 188 living in the rural area and 188 living in the urban area, from January through December of 1996. Using the Lutz method 177 (47.1 percent) individuals infected: 102 (57.6 percent) in the rural population and 75 (39.9 percent) in the urban population (P < 0.05). Of the total 177 enteroparasite and commensal occurrences diagnosed were: Entamoeba coli (18.3 percent), hookworm (17.8 percent), Endolimax nana (6.1 percent>), Giardia lamblia (5.8 percent), Ascaris lumbricoides (2.6 percent>), Entamoeba hartmanni (2.1 percent), Iodamoeba biltschlii (1.6 percent), Strongyloides ster cor alls (1.3 percent), Enterobius vermicularis (0.5 percent), and Trichostrongylus sp (0.5 percent). Geohelminths were predominant in the rural area, with an occurrence ofhookworm infections at 28.2 percent in these individuals and 7.4 percent in the urban people (OR: 14.33 CI: 6.230 to 32.970). The infection rate of enteroparasites was high in the population studied. In conclusion, it is necessary to implement regular parasitological exams and education about the forms and consequences of transmitting parasites, primarily among people living in the rural area.


El objetivo de este estudio fue evaluar la presencia de enteroparasitas y comensales en habitantes de la ciudad de Abadia dos Dourados, Minas Gerais, Brasil. 376 personas fueron seleccionadas aleatoriamente, 188 viviendo en el área rural y 188 viviendo en el área urbana, enero a diciembre de 1996. Usando el método de Lutz, 177 (47,1 por ciento) individuos estaban infectados, siendo 102 (57,6 por ciento) del área rural y 75 (39,9 por ciento) del área urbana (P < 0,05). Del total de 177 positivos, la ocurrencia de entoparasitas y comenzáis diagnosticadas fueron: Entamoeba coli (18,3 por ciento), hookworm (17,8 por ciento), Endolimax nana (6,1 por ciento), Giardia lamblia (5,8 por ciento), Ascaris lumbricoides (2,6 por ciento), Entamoeba hartmanni (2,1 por ciento), Iodamoeba butschlii (1,6" por ciento), Stron-gyloides stercolaris (1,3 por ciento), Enterobius vermicularis (0,5 por ciento), y Trichostrongylus sp (0,5 por ciento), Geohelmintos fueron predominantes en el ßrea rural, con 28,2 por ciento de infección para hookworm en esta populación y 7,4 por ciento en la populación urbana (OR: 14,33 CI: 6.230 para 32.970). La tasa de infección para enteroparasitas fue alta en los individuos estudiados, siendo necesario hacer exámenes parasitológicos regulares en estas personas y adoptar medidas profilácticas sobre las formas y consecuencias de transmisión de parásitas, principalmente entre personas que viven en el área rural.


Subject(s)
Humans , Male , Adolescent , Adult , Female , Infant , Child, Preschool , Child , Middle Aged , Aged, 80 and over , Intestinal Diseases, Parasitic/diagnosis , Intestinal Diseases, Parasitic/epidemiology , Age and Sex Distribution , Brazil/epidemiology , Incidence , Rural Areas , Urban Area
7.
Hist. ciênc. saúde-Manguinhos ; 15(2): 401-410, abr.-jun. 2008. ilus, tab
Article in Portuguese | LILACS | ID: lil-488235

ABSTRACT

Uma das mais ricas, antigas e diversificadas coleções entomológicas da América Latina, que alberga relevante parcela de nossa biodiversidade, foi drasticamente penalizada durante o episódio que ficou conhecido como o Massacre de Manguinhos, no qual dez eminentes pesquisadores tiveram seus direitos políticos cassados. Esta nota relata uma ínfima parcela da tragédia que desmantelou parte desse acervo e como 8.554 exemplares valiosos da ordem Diptera, pertencentes a 35 famílias, incluindo 99 exemplares-tipos, foram reincorporados à Coleção Entomológica do Instituto Oswaldo Cruz, em suas posições originais nos armários de aço, após 35 anos. Esta reincorporação representa o primeiro resgate científico-histórico desse acervo, após o período da ditadura militar no Brasil.


One of the oldest, most varied and widest-ranging entomology collections in Latin America, containing a significant portion of Brazil's biodiversity, was severely damaged during an episode which came to be known as the Manguinhos Massacre, when ten eminent researchers had their political rights suspended. This note tells of how a particular episode in the tragedy caused part of this collection to be broken up, and how 8,554 valuable specimens of the order Diptera, from 35 families, including 99 type specimens, have been reintroduced to Instituto Oswaldo Cruz's Entomology Collection in their original positions in the steel cabinets 35 years on. This reintroduction represents the first effort to restore this collection both historically and scientifically since Brazil's military dictatorship.


Subject(s)
Humans , Animals , History, 20th Century , Science/history , Collection , Entomology/history , Research Personnel , Brazil , History, 20th Century , Expeditions/history
8.
Rio de Janeiro; Imperial Novo Milênio/Fiocruz; 2008. 63 p.
Monography in Portuguese | LILACS, ColecionaSUS | ID: biblio-940969
9.
Rio de Janeiro; Fundação Oswaldo Cruz. Amparo à Pesquisa do Estado do Rio de Janeiro; 2008. 63 p. mapas, ilus.
Monography in Spanish, Portuguese | LILACS | ID: lil-690417

ABSTRACT

Embora conhecida desde 1909, quando foi descrita pelo médico sanitarista Carlos Chagas, a doença de Chagas, também chamada de tripanossomíase americana, ainda apresenta grande importância em saúde pública no Brasil, ocorrendo principalmente no semi-árido nordestino. Está distribuída em todas as Américas, desde o sul dos Estados Unidos até a Argentina e o Chile (Rey, 2001)... Para melhor entendermos esses processos, é preciso que conheçamos um pouco mais a respeito da ecologia dos barbeiros, do modo de infecção desses insetos pelo protozoário causador da doença, o T. cruzi, e de como a sua transmissão ao homem ocorre.


Subject(s)
Humans , Chagas Disease , Chagas Disease/epidemiology , Chagas Disease/transmission , Insect Vectors , Public Health , Signs and Symptoms , Triatoma , Triatominae , Trypanosoma cruzi , Triatominae/anatomy & histology
10.
Neotrop. entomol ; 36(6): 987-989, Nov.-Dec. 2007. ilus
Article in English | LILACS | ID: lil-473556

ABSTRACT

Megaselia scalaris (Loew) is a cosmopolitan and synanthropic scuttle fly, eclectic in its feeding habits and acts as detritivore, parasite, facultative parasite, and parasitoid. Here we report for the first time M. scalaris infesting laboratory colonies of Triatoma brasiliensis Neiva, the most important Chagas disease vector in semiarid areas of Brazil. M. scalaris larvae were found feeding inside bugs; pupae were found in the esophagus and intestinal regions of T. brasiliensis through dissection. Other relevant information about this finding is also described in this note, including some preventive measures to avoid laboratory colonies infestations.


Megaselia scalaris (Loew) é uma mosca cosmopolita, sinantrópica e eclética quanto aos seus hábitos alimentares, tendo sido descrita como detritívora, parasita, parasita facultativa e parasitóide. Nesta nota, registra-se pela primeira vez, M. scalaris infestando colônias de laboratório de Triatoma brasiliensis Neiva, o mais importante vetor da doença de Chagas no semi-árido brasileiro. Larvas de M. scalaris foram encontradas alimentando-se dos órgãos internos dos triatomíneos; pupas foram encontradas na região intestinal e esofagiana de exemplares de T. brasiliensis dissecados. Outras informações relevantes sobre o achado são descritas nesta nota, bem como medidas preventivas para evitar infestações por M. scalaris em colônias de triatomíneos.


Subject(s)
Animals , Animals, Laboratory/parasitology , Diptera/physiology , Reduviidae/parasitology
11.
Mem. Inst. Oswaldo Cruz ; 102(1): 87-90, Feb. 2007. ilus
Article in English | LILACS | ID: lil-440639

ABSTRACT

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 color of the pronotum, which is dark, and by the entirely dark femora.


Subject(s)
Animals , Male , Female , Triatoma/anatomy & histology , Triatoma/classification , Brazil
12.
Rev. Inst. Med. Trop. Säo Paulo ; 47(3)May-June 2005. tab, graf
Article in English | LILACS | ID: lil-406289

ABSTRACT

A doença de Chagas é de rara ocorrência na Região Amazônica Brasileira, onde contudo as condições para o estabelecimento de ciclos domésticos existem. Um estudo previamente realizado em áreas de colonização agrícola no Estado de Roraima, mostrou a possibilidade de ciclos autóctones de transmissão virem a ocorrer uma vez que todos os elementos estavam lá presentes, indivíduos infectados por Trypanosoma cruzi, espécies de triatomíneos anteriormente descritas como infectadas por T. cruzi na Região Amazônica de países fronteiriços e, ambientes domiciliares e peri-domiciliares favoráveis à colonização de triatomíneos. Triatoma maculata foi a espécie mais frequentemente encontrada, tendo sido coletada em galinheiros no peridomicílio e esporadicamente nos domicílios. Visando investigar a potencialidade de T. maculata como espécie vetora na área, algumas características bionômicas foram estudadas em condições de laboratório incluindo freqüência de alimentação, tempo de defecação pós-prandial, tempo de jejum voluntário na pré- e na pós-ecdise, período inter-mudas, períodos de pré-oviposição e de oviposição, índice de oviposição, período de incubação, viabilidade dos ovos, índices de longevidade e de mortalidade. Os resultados mostraram que a população de T. maculata da Colônia Agrícola do Passarão deve ser considerada vetora em potencial do T. cruzi uma vez que mostrou capacidade de infestar ecótopos artificiais no peridomicílio, de se alimentar com freqüência durante o período ninfal, de possuir um ciclo de desenvolvimento relativamente curto com 2,9 gerações/ano, de possuir hábitos ecléticos de alimentação, de defecar imediatamente após a hematofagia quando ainda no hospedeiro e devido ao fato de ter sido previamente encontrada infectada por T. cruzi.


Subject(s)
Animals , Male , Female , Behavior, Animal/physiology , Insect Vectors/physiology , Longevity/physiology , Triatoma/physiology , Brazil , Chagas Disease , Defecation/physiology , Feeding Behavior/physiology , Insect Vectors/parasitology , Molting/physiology , Oviposition/physiology , Trypanosoma cruzi , Triatoma/parasitology
13.
Mem. Inst. Oswaldo Cruz ; 100(3): 231-235, May 2005. tab, graf
Article in English | LILACS | ID: lil-411015

ABSTRACT

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 previous studies in which samples of T. rubrovaria subjected to a slight starvation period before the blood meal were used. The obtained results support former indication that T. rubrovaria presents bionomic characteristics propitious to be a good vector of Trypanosoma cruzi to man. Therefore its domiciliary invasion process must be continuously monitored.


Subject(s)
Animals , Mice , Defecation/physiology , Insect Vectors/physiology , Triatoma/physiology , Chagas Disease/transmission , Food Deprivation , Feeding Behavior/physiology , Nymph/physiology , Time Factors , Trypanosoma cruzi , Triatoma/growth & development
14.
Rev. Inst. Med. Trop. Säo Paulo ; 47(1): 45-54, jan.-fev. 2005. ilus, mapas, tab, graf
Article in English | LILACS | ID: lil-393343

ABSTRACT

A doença de Chagas foi quase inteiramente erradicada das zonas áridas do Brasil Central e Nordeste, onde ciclos autóctones de transmissão praticamente inexistem. Contudo, na última década a doença vem sendo registrada na Região Amazônica. Objetivando investigar a possibilidade da ocorrência de ciclos autóctones de transmissão em áreas de colonização agrícola no Estado de Roraima, foram realizadas coletas de triatomíneos e estudos de sua biologia (a ser mostrado em outro artigo), sorologia (imunofluorescência, hemaglutinação, ELISA) e pesquisa parasitológica (xenodiagnóstico, PCR) entre moradores de Rorainópolis, do Projeto Passarão e da Comunidade da Ilha. Candidatos a doação sanguínea do Hemocentro de Boa Vista também foram avaliados. Foram coletados Triatoma maculata, Rhodnius pictipes, Rhodnius robustus e Panstrongylus geniculatus em palmeiras-buriti Mauritia flexuosa, em anexos peridomiciliares e em domicílios. Nenhum triatomíneo foi encontrado naturalmente infectado. A presença de anticorpos anti-Trypanosoma cruzi foi verificada em 25 indivíduos (1,4% de um total de 1821), 20 dos quais migrantes, todos adultos >15 anos. Apenas dois indivíduos migrantes tiveram mais de dois exames sorológicos positivos (um ainda com xenodiagnóstico positivo e o outro com PCR positivo), estando seguramente infectados. Os resultados mostram que apesar de não ser endêmica, há a presença de todos os elos da cadeia de transmissão da doença de Chagas em Roraima que permitem a sua instalação na ausência de vigilância.


Subject(s)
Humans , Animals , Male , Female , Adolescent , Adult , Middle Aged , Antibodies, Protozoan/blood , Chagas Disease/transmission , Insect Vectors/classification , Trypanosoma cruzi/immunology , Brazil/epidemiology , Chagas Disease/diagnosis , Chagas Disease/epidemiology , Enzyme-Linked Immunosorbent Assay , Hemagglutination Tests , Polymerase Chain Reaction , Seroepidemiologic Studies , Xenodiagnosis
15.
Mem. Inst. Oswaldo Cruz ; 98(5): 637-639, July 2003. tab, graf
Article in English | LILACS | ID: lil-344282

ABSTRACT

Triatoma brasiliensis is composed of at least four geographic populations (brasiliensis, melanica, macromelasoma, and juazeiro) that have distinct chromatic, morphologic, biologic and ecologic patterns, and genetic composition. Reciprocal crosses between all pairwise combinations were carried out in order to evaluate the genetic and reproductive compatibility of these four populations. The F1 individuals developed normally and the resulting adults were crossed again to test the F2 and F3 viability. Genetic incompatibility was found between melanica and brasiliensis populations


Subject(s)
Animals , Male , Female , Genetic Variation , Triatominae , Reproduction , Triatominae
16.
Mem. Inst. Oswaldo Cruz ; 98(4): 443-449, June 2003. mapas, tab
Article in English | LILACS | ID: lil-344232

ABSTRACT

To clarify the epidemiologic importance of Triatoma brasiliensis, the most important Chagas disease vector in the Northeastern of Brazil, capture data related to this species, its distribution, capture index, and percentages of natural infection by Trypanosoma cruzi were examined in 12 different Brazilian states. The Brazilian National Health Foundation collected these data from 1993 to 1999, a period during which a total of 1,591,280 triatomines (21 species) were captured in domiciles within the geographic range of T. brasiliensis. Of this total, 422,965 (26.6 percent) were T. brasiliensis, 99.8 percent of which were collected in six states, and 54 percent in only one state (Ceará). The percentage of bugs infected with T. cruzi varied significantly among states, ranging from 0 percent (Goiás, Maranhão, Sergipe, and Tocantins) to more than 3 percent (Alagoas, Minas Gerais, and Rio Grande do Norte) with an average of 1.3 percent. This latter value represents a dramatic reduction in the natural infection percentages since 1983 (6.7 percent) suggesting that, despite the impossibility of eradicating this native species, the control measures have significantly reduced the risk of transmission. However, the wide geographic distribution of T. brasiliensis, its high incidence observed in some states, and its variable percentages of natural infection by T. cruzi indicate the need for sustained entomological surveillance and continuous control measures against this vector


Subject(s)
Animals , Humans , Chagas Disease , Housing , Insect Vectors , Triatoma , Trypanosoma cruzi , Brazil , Geography , Population Density
17.
Mem. Inst. Oswaldo Cruz ; 98(3): 367-372, Apr. 2003. tab, graf
Article in English | LILACS | ID: lil-340115

ABSTRACT

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 on mice. Fifty three percent of the females showed a defecation pattern conducive to chagasic transmission, defecating either on or near the bite site. The averages of the resistance to starvation varied from 48.1 to 179 days, for the first and fifth nymphal stages, respectively. Our study shows that with respect to the patterns of feeding, defecation and resistance to fasting, T. rubrovaria presented similar rates to the ones observed for other effective vector species, such as T. infestans. Thus, based on our studies we conclude that T. rubrovaria has biological characteristics that can positively influence its capacity to become infected and transmit T. cruzi, and also to keep residual populations after chemical control interventions


Subject(s)
Animals , Male , Female , Mice , Defecation , Feeding Behavior , Insect Vectors , Starvation , Triatoma , Chagas Disease , Time Factors , Trypanosoma cruzi
18.
Mem. Inst. Oswaldo Cruz ; 98(2): 233-240, Mar. 15, 2003.
Article in English | LILACS | ID: lil-334261

ABSTRACT

This paper presents a list of 131 Mallophaga type specimens deposited in the Werneck Collection of Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brazil. It includes 69 holotypes, 62 allotypes, 683 paratypes, 1 syntype and 2 neoparatypes, distributed among 6 families and 35 genera. The types are listed with their respective data and literature


Subject(s)
Animals , Male , Female , Phthiraptera , Brazil
19.
Ciênc. rural ; 33(1): 103-108, jan.-fev. 2003. ilus
Article in Portuguese | LILACS | ID: lil-349503

ABSTRACT

Os defeitos de espessura completa do palato que resultam em comunicaçäo oro-nasal raramente cicatrizam espontaneamente. Eles requerem reparo cirúrgico, porém, pode ser difícil obter cicatrizaçäo satisfatória devido às condiçöes próprias das cavidades nasal e oral. Neste experimento, foram utilizados 14 cäes, reunidos em dois grupos de igual número. Todos animais foram submetidos à induçäo de fenda palatina experimental. O grupo G1 foi o controle, cuja palatoplastia foi realizada a partir da confecçäo de ®flap¼ muco-periósteo. No grupo G2, foi utilizada cartilagem da pina auricular conservada em glicerina a 98 por cento entre o osso palatino e o muco-periósteo. Os animais foram avaliados macroscopicamente quanto ao processo cicatricial, por radiografias para a regeneraçäo óssea e por rinoscopia para observar a regeneraçäo da mucosa nasal. Foi observada a cicatrizaçäo da mucosa oral a partir do 10§ dia, com deiscência de sutura em dois animais do grupo G1. A radiografia demonstrou evoluçäo na cicatrizaçäo óssea, num processo mais acelerado no grupo G2 quando comparado ao grupo G1. A rinoscopia revelou, aos 60 dias, completa regeneraçäo da mucosa nasal em ambos os grupos. Ao final do período de avaliaçäo foi observada macroscopicamente, completa fusäo óssea nos animais do grupo G2 e incompleta nos do grupo G1, o que demonstrou a interferência benéfica do implante no processo cicatricial do grupo G2.


Subject(s)
Animals , Dogs/surgery , Cartilage , Cleft Palate , Glycerol , Bone Regeneration
20.
Mem. Inst. Oswaldo Cruz ; 97(8): 1127-1131, Dec. 15, 2002. mapas, tab
Article in English | LILACS | ID: lil-326335

ABSTRACT

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 batches of the species were collected from different municipalities of RS distant from 72 to 332 km: Santana do Livramento (natural ecotope), Santana do Livramento (artificial ecotope), Santiago (natural ecotope), Canguçu (peridomicile) and Encruzilhada do Sul (natural ecotope). A total of 285 specimens were collected, 85 specimens kept sufficient fecal material in their guts for the precipitin analysis. The results indicated the food eclecticism for this species and the anti-rodent serum showed the highest positivity in most localities. From the total of analyzed samples, only 1.3 percent of unique positivity for human blood was registered, all of them for Santiago population. This reactivity to human blood may be associated to pastures activities in the field


Subject(s)
Animals , Humans , Ecology , Triatoma , Brazil , Feeding Behavior , Triatoma
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