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Search Results: 1 - 10 of 10592 matches for " Jeronimo;Lopes "
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Prevalência de Anofelinos (Diptera: Culicidae) no Crepúsculo Vespertino em áreas da Usina Hidrelétrica de Itaipu, no Município de Guaíra, Estado do Paraná, Brasil
Guimar?es, Anthony érico;Mello, Rubens Pinto de;Lopes, Catarina Macedo;Alencar, Jeronimo;Gentile, Carla;
Memórias do Instituto Oswaldo Cruz , 1997, DOI: 10.1590/S0074-02761997000600004
Abstract: systematic collections of anophelines were conducted from november 1994 to august 1995 from 18:00 to 20:00 hr using shannon traps and human-bait along the lake margin which forms the itaipu hydroelectric reservoir, state of paraná, brazil. species prevalence was studied at 15 min intervals. anopheles albitarsis sensu latu and an. galvaoi, were the most frequently collected mosquitoes. all anopheles species populations peaked between 18:45 and 19:30 hr. the observations illustrate the existence of a haematophagic activity cycle during the early evening hours: exogenous stimulus (the beginning of sunset) ? shannon trap (light attraction) ? human bait (haematophagy) ? rest and digestion ? exogenous stimulus ? shannon trap or surrounding vegetation. the greater abundance of an. albitarsis collected in human-bait and shannon trap suggests it may be a potential malaria vector in the region
Ecology of Anopheline (Diptera, Culicidae), malaria vectors around the Serra da Mesa Reservoir, State of Goiás, Brazil: 1 - Frequency and climatic factors
Guimar?es, Anthony érico;Gentile, Carla;Alencar, Jeronimo;Lopes, Catarina Macedo;Mello, Rubens Pinto de;
Cadernos de Saúde Pública , 2004, DOI: 10.1590/S0102-311X2004000100047
Abstract: the ecology of anopheline species (diptera, culicidae) was studied in the vicinity of the serra da mesa reservoir, state of goiás, brazil. climatic factors and frequency of anopheline populations were analyzed. bimonthly human-bait and shannon trap captures were conducted for 36 consecutive months (january 1997 through december 1999). a total of 5,205 adult anophelines belonging to five species were collected. anopheles darlingi was the most frequently collected anopheline (61.4%), followed by an. albitarsis s.l. (35.4%), an. triannulatus. (2.5%), an. oswaldoi (0.4%), and an. evansae (0.2%). the water level and vegetation along the banks of the reservoir were crucial to the frequency of the various anopheline species. climatic factors had a secondary influence. the reservoir's water-level stability, increased frequency of an. darlingi, and the arrival of gold prospectors were responsible for the increase in malaria cases.
Ecologia de mosquitos (Diptera, Culicidae) em áreas do Parque Nacional do Igua?u, Brasil: 1 - Distribui??o por hábitat
Guimar?es, Anthony érico;Lopes, Catarina Macedo;Mello, Rubens Pinto de;Alencar, Jeronimo;
Cadernos de Saúde Pública , 2003, DOI: 10.1590/S0102-311X2003000400032
Abstract: a study of the mosquito fauna in the igua?u national park focused on population behavior in four biotopes with different types of plant cover inside the park. systematic bimonthly diurnal and nocturnal human bait and shannon trap captures were conducted in both forest and domiciliary environments over the course of 24 months. a total of 20,273 adult mosquito specimens belonging to 44 species were collected: ochlerotatus serratus (10.3%), haemagogus leucocelaenus (9.7%), mansonia titillans (9.6%), and chagasia fajardoi (8.8%) were the most frequently captured mosquitoes. anopheles cruzii, runchomyia theobaldi, wyeomyia aporonoma, and wy. confusa were captured almost exclusively in well-preserved areas with dense forest cover. culex nigripalpus, oc. pennai, oc. serratus, sabethes purpureus, and sa. albiprivus were captured in three essentially sylvatic biotopes. species captured in the forest areas around a dam were: an. albitarsis s.l., an. galvaoi, an. evansae, an. fluminensis, coquillettidia venezuelensis, cq. juxtamansonia, wy. quasilongirostris, and onirion personatum, ch. fajardoi, cq. fasciolata, cq nitens, and ma. titillans were the most frequently captured species in a residential area.
Microscopia eletr nica de varredura de ovos de Haemagogus leucocelaenus (Diptera: Culicidae)
Alencar Jeronimo,Guimar?es Anthony érico,Mello Rubens Pinto,Lopes Catarina Macedo
Revista de Saúde Pública , 2003,
Abstract: OBJETIVO: Observar detalhes morfológicos de ovos de Haemagogus leucocelaenus visualizados pela primeira vez por microscopia eletr nica de varredura (MEV) e realizar morfometria das principais estruturas. MéTODOS: Foram utilizados ovos de Hg. leucocelaenus provenientes de fêmeas capturadas na Reserva Biológica do Tinguá, RJ, sendo parte destinada à eclos o e outra ao processamento de MEV, dos quais três foram submetidos à análise morfométrica. O material foi fixado em glutaraldeído 2,5% e pós-fixado em tetróxido de ósmio 1%, ambos em tamp o cacodilato de sódio 0.1M, pH 7.2, processado e observado ao MEV Jeol 5310. Medi es foram realizadas com o auxílio do software de análise Semafore. RESULTADOS: Os ovos apresentaram contorno elíptico com aproximadamente 574 μm de comprimento e 169 μm de largura, sendo o índice do ovo (l/wratio) 3,39 μm. O exocório é extremamente regular, possuindo ornamenta o hexagonal e algumas vezes pentagonal. Nas células cori nicas, observaram-se tubérculos simetricamente dispostos com rela o ao eixo longitudinal, e, no interior delas, tubérculos menores, individualizados, dispostos na periferia, e poucos agrupados no centro. A superfície do retículo cori nico n o apresentou rugosidades. O aparelho micropilar apresenta colar proeminente, contínuo, com disco micropilar bem evidente. CONCLUS ES: A ornamenta o do exocório apresenta diferen as em rela o aos tubérculos das células cori nicas e ao retículo cori nico externo entre os ovos de Hg. leucocelaenus comparados aos ovos de Hg. janthinomys e Hg. equinus, bem como com rela o aos de Aedes aegypti, Ae. albopictus e Ae bahamensis.
Prevalência de Anofelinos (Diptera: Culicidae) no Crepúsculo Vespertino em áreas da Usina Hidrelétrica de Itaipu, no Município de Guaíra, Estado do Paraná, Brasil
Guimar?es Anthony érico,Mello Rubens Pinto de,Lopes Catarina Macedo,Alencar Jeronimo
Memórias do Instituto Oswaldo Cruz , 1997,
Abstract: Systematic collections of anophelines were conducted from November 1994 to August 1995 from 18:00 to 20:00 hr using Shannon traps and human-bait along the lake margin which forms the Itaipu Hydroelectric reservoir, State of Paraná, Brazil. Species prevalence was studied at 15 min intervals. Anopheles albitarsis sensu latu and An. galvaoi, were the most frequently collected mosquitoes. All Anopheles species populations peaked between 18:45 and 19:30 hr. The observations illustrate the existence of a haematophagic activity cycle during the early evening hours: exogenous stimulus (the beginning of sunset) Shannon trap (light attraction) human bait (haematophagy) rest and digestion exogenous stimulus Shannon trap or surrounding vegetation. The greater abundance of An. albitarsis collected in human-bait and Shannon trap suggests it may be a potential malaria vector in the region
Ecologia de mosquitos (Diptera, Culicidae) em áreas do Parque Nacional do Igua u, Brasil: 1 - Distribui o por hábitat
Guimar?es Anthony érico,Lopes Catarina Macedo,Mello Rubens Pinto de,Alencar Jeronimo
Cadernos de Saúde Pública , 2003,
Abstract: Estabelecemos a influência exercida pela cobertura vegetal de quatro diferentes biótopos em áreas do Parque Nacional do Igua u (PNI) sobre a fauna local de mosquitos. Realizaram-se capturas bimestrais, em isca humana e armadilha Shannon, em três diferentes períodos do dia, em ambiente silvestre e domiciliar, durante 24 meses consecutivos. Dentre os 20.273 espécimes de fêmeas adultas capturadas, pertencentes a 44 espécies, Ochlerotatus serratus (10,3%), Haemagogus leucocelaenus (9,7%), Mansonia titillans (9,6%) e Chagasia fajardoi (8,8%) foram predominantes. Anopheles cruzii, Runchomyia theobaldi, Wyeomyia aporonoma e Wy. confusa ocorreram exclusivamente em áreas com vegeta o bem preservada e densa configura o. Culex nigripalpus, Oc. pennai, Oc. serratus, Sabethes purpureus e Sa. albiprivus foram capturados nos três biótopos essencialmente silvestres. Na mata no entorno da represa foram capturadas principalmente An. albitarsis s.l., An. galvaoi, An. evansae, An. fluminensis, Coquillettidia venezuelensis, Cq. juxtamansonia, Wy. quasilongirostris e Onirion personatum. As espécies que apresentaram maiores incidências na área sob a o antrópica foram Ch. fajardoi, Cq. fasciolata, Cq. nitens e Ma. titillans.
Ecology of Anopheline (Diptera, Culicidae), malaria vectors around the Serra da Mesa Reservoir, State of Goiás, Brazil: 1 - Frequency and climatic factors
Guimar?es Anthony érico,Gentile Carla,Alencar Jeronimo,Lopes Catarina Macedo
Cadernos de Saúde Pública , 2004,
Abstract: The ecology of anopheline species (Diptera, Culicidae) was studied in the vicinity of the Serra da Mesa Reservoir, State of Goiás, Brazil. Climatic factors and frequency of anopheline populations were analyzed. Bimonthly human-bait and Shannon trap captures were conducted for 36 consecutive months (January 1997 through December 1999). A total of 5,205 adult anophelines belonging to five species were collected. Anopheles darlingi was the most frequently collected anopheline (61.4%), followed by An. albitarsis s.l. (35.4%), An. triannulatus. (2.5%), An. oswaldoi (0.4%), and An. evansae (0.2%). The water level and vegetation along the banks of the reservoir were crucial to the frequency of the various anopheline species. Climatic factors had a secondary influence. The reservoir's water-level stability, increased frequency of An. darlingi, and the arrival of gold prospectors were responsible for the increase in malaria cases.
Observa??es sobre padr?es alimentares de mosquitos (Diptera: Culicidae) no Pantanal Mato-Grossense
Alencar, Jeronimo;Lorosa, Elias S.;Silva, Júlia dos S.;Lopes, Catarina M.;Guimar?es, Anthony E.;
Neotropical Entomology , 2005, DOI: 10.1590/S1519-566X2005000400020
Abstract: the feeding habits of culicids were studied by means of the precipitin technique. the collections were made the trans-pantanal highway (mt-060- km 52), at 65 km from the main settlement of the municipality of poconé, mt, every other month, from december 2002 to december 2003. trapping was performed using shannon traps and cdc automatic co2-based traps from 3:00 p.m. to 9:00 p.m. the following antisera were utilized: bird, rodent, human, horse, cattle, capybara and toad. of the 2,134 females captured, 1,946 (92,2%) were collected in shannon traps and 188 (8,8%) in cdc traps. among these totals, 276 females (13,0%) were engorged and suitable for the precipitin test, of which 235 (85,1%) were collected in shannon traps and 41 (14,9%) in cdc traps. it was found that 84.2% of the specimens analyzed reacted to one food source and 15.8% to two sources. mansonia titillans (walker), culex nigripalpus (theobald), aedeomyia squamipennis (lynch-arribalzaga) and psorophora albigenu (peryassu) were the most frequently found species, and reacted to all the antisera. on the other hand, few specimens of the anophelines, anopheles albitarsis (lynch-arribalzaga), an. matogrossensis (lutz & neiva) and an. triannulatus (neiva & pinto), reacted to five antisera. the other species were positive to three up to six antisera. the estimate of the feeding index revealed positive results for eight species, of these five they presented outstanding preference for the host capybara.
Microscopia eletr?nica de varredura de ovos de Haemagogus leucocelaenus (Diptera: Culicidae)
Alencar,Jeronimo; Guimar?es,Anthony érico; Mello,Rubens Pinto; Lopes,Catarina Macedo; Dégallier,Nicolas; Santos-Mallet,Jacenir R;
Revista de Saúde Pública , 2003, DOI: 10.1590/S0034-89102003000500017
Abstract: objective: to observe morphological details of the eggs of haemagogus (conopostegus) leucocelaenus, seen for the first time via scanning electron microscopy (sem), with morphometric analysis of the main structures. methods: eggs of hg. leucocelaenus were obtained from females captured in the biological reserve of tinguá, state of rio de janeiro. some of the eggs were kept for hatching and others underwent processing for scanning electron microscopy studies. three eggs were submitted to morphometric analysis. the material was fixed in 2.5% glutaraldehyde and postfixed in 1% osmium tetroxide, both in 0.1m, ph 7.2 sodium cacodylate buffer, then dehydrated in ethanol and dried using the critical point method. this was then set up on metallic supports, covered with gold and observed using the jeol 5310 scanning electron microscope. measurements were made with the aid of the semafore analysis software coupled to the electron microscope. results: the eggs presented elliptical outlines of approximately 574 mm in length and 169 mm in width, with an egg index (l/w ratio) of 3.39 mm. the exochorion was extremely regular and had ornamentation that was usually hexagonal but sometimes pentagonal. tubercles were observed on the chorionic cells, symmetrically arranged in relation to the longitudinal axis. inside the cells, there were smaller, individualized tubercles, some arranged peripherally and others grouped to a greater or lesser extent in the center. the surface of the chorionic reticulum did not present rugosity. the micropylar apparatus was formed by a prominent continuous collar of 8.32 mm in thickness, with a slightly irregular surface. the micropylar disk was very evident, and was continuous with the collar. the micropyle was seen at the center of this disk, measuring 1.6 mm and with a micropylar apparatus of 27.3 mm in diameter. conclusions: the ornamentation of the exochorion presents differences in relation to the tubercles of chorionic cells and the external chorion
Multisensor Data Fusion Technology
élcio Jeronimo de Oliveira
Periódico Tchê Química , 2010,
Abstract:
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