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Search Results: 1 - 10 of 23316 matches for " disease vectors "
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Fauna anofélica da cidade de Belém, Pará, Brasil: dados atuais e retrospectivos
Silva, Ana de Nazaré Martins da;Fraiha-Neto, Habib;Santos, Carla Christiani Bastos dos;Segura, Maria de Nazaré de Oliveira;Amaral, Jane Cristina de Oliveira Faria;Gorayeb, Inocêncio de Sousa;Lacerda, Raimundo Nonato da Luz;Sucupira, Izis M?nica Carvalho;Pimentel, Le?ncio Nazaré;Conn, Jan E.;Póvoa, Marinete Marins;
Cadernos de Saúde Pública , 2006, DOI: 10.1590/S0102-311X2006000800006
Abstract: we present the results of anopheline captures in belém, pará, brazil, from 1995-2004, and a comparison with captures from 1930-1999. in the earlier period, 20 species were identified: anopheles albitarsis s.l., an. aquasalis, an. argyritarsis, an. braziliensis, an. darlingi, an. eiseni, an. evansae, an. galvaoi, an. intermedius, an. kompi, an. mediopunctatus, an. nimbus, an. nuneztovari, an. oswaldoi, an. peryassui, an. punctimacula, an. shannoni, an. strodei, an. thomasi, and an. triannulatus. seven of these species were not found in 1995-2004 (an. argyritarsis, an. eiseni, an. galvaoi, an. kompi, an. nimbus, an. punctimacula, and an. thomasi). the persistence of so many species is probably due to the local preservation of forest areas. two species are of vectorial importance (an. darlingi and an. aquasalis). an. aquasalis is still the most abundant species (46.26% of adults, 99.21% of larvae) and the only one detected in all capture sites. there is thus a potential risk of malaria transmission in the entire municipality of belém.
Vigilancia Entomológica para Culicidos a través de larvitrampas en el Departamento del Atlántico (Colombia) 2004-2008
Maestre-Serrano,Ronald; Goenaga-Olaya,Sergio;
Boletín de Malariología y Salud Ambiental , 2010,
Abstract: the department of atlántico presents risk factors for the transmission of vector-borne diseases. the objective of this paper was to report culicidae species using an entomological system of surveillance based in larvitraps located in urban and periurban areas in the department of atlántico - colombia between 2004 and 2008. it was obtained weekly with information of the entomological material collected in fourteen larvitraps located in the international airport (2004-2008) and in four larvitraps placed in the transport terminal (2007-2008) in the municipality of soledad and in ten larvitraps settled in the army battalion (2005-2008) in the municipality of malambo. 83.369 mosquitoes larvae (culicidae) were collected: 37.370 (45%) from the airport, 35.376 (42%), from the transport terminal and 10.623 (13%) from the army battalion. aedes aegypti was the most abundant species (89,21%), followed by culex nigripalpus (3,45%), culex quinquefasciatus (2,46 %), haemagogus equinus (2,25%), culex coronator (1,19%), uranotaenia lowii (0,91%), culex stigmatosoma (0,52%) and aedes taeniorhynchus, anopheles albimanus, toxorhynchites spp with 0.01 % respectively. it is necessary to maintain a permanent entomological surveillance system in urban and periurban areas of the department of atlántico, in order to take prevention and control measures on time.
Ocorrência de flebotomíneos (Diptera, Psychodidae) em focos de leishmanioses, em área de ecoturismo do entorno do Parque Nacional dos Len?óis Maranhenses, Brasil
Rebêlo, José Manuel Macário;Assun??o Júnior, Antonildes Nascimento;Silva, Orleans;Moraes, Jorge Luiz Pinto;
Cadernos de Saúde Pública , 2010, DOI: 10.1590/S0102-311X2010000100020
Abstract: the distribution and relative abundance of sand fly species were studied in the municipality of barreirinhas, maranh?o state, brazil, around the len?óis maranhenses national park, from january to june 2005, august 2004, july 2005, and september/2008. a total of 6,658 specimens were captured. the most frequent species were lutzomyia whitmani (46.6%), l. longipalpis (29.9%), l. evandroi (17.1%), and l. lenti (4.8%), while l. termitophila, l. flaviscutellata, l. migonei, l. infraspinosa, l. sordellii, l. wellcomei, l. antunesi, and l. trinidadensis represented 1.6%. the presence of leishmania vector species explains the high detection rate for tegumentary leishmaniasis in 2000 (308.2), 2001 (310.9), 2002 (338.2), and 2005 (313.6) and active foci of human visceral leishmaniasis in the municipality of barreirinhas.
Phlebotomine sandfly species from an American visceral leishmaniasis area in the Northern Rainforest region of Pernambuco State, Brazil
Carvalho, Maria Rosimery de;Lima, Bruna Santos;Marinho-Júnior, José Ferreira;Silva, Fernando José da;Valen?a, Hélio Fran?a;Almeida, Francisco de Assis;Silva, Amilton Lopes da;Brand?o-Filho, Sinval Pinto;
Cadernos de Saúde Pública , 2007, DOI: 10.1590/S0102-311X2007000500024
Abstract: the aim of this study was to identify the fauna of phlebotomine sandflies in an area with incidence of american visceral leishmaniasis (avl) in s?o vicente férrer, a municipality (county) located in the northern zona da mata in pernambuco state, brazil. sandfly captures were conducted monthly for four nights/month from december 2002 to november 2003, by means of manual captures (with a shannon trap) and by cdc light traps. a total of 23,156 specimens of phlebotomines sandflies were collected in a remnant of the atlantic rainforest, houses, and animal shelters. lutzomyia complexa was the most prevalent species, with a frequency of 62.5% (14,445/23,156), followed by lutzomyia migonei, with 33.2% (7,677/23,156). no lutzomyia longipalpis (the main vector of leishmania chagasi in brazil and the americas) was found in the target area. some specimens were dissected, but no leishmania parasites were found.
Data on sand fly fauna (Diptera, Psychodidae, Phlebotominae) in Itatiaia National Park, Rio de Janeiro State, Brazil
Afonso, Margarete M. S.;Costa, Wagner A.;Azevedo, Alfredo C. R.;Costa, Simone M. da;Vilela, Maurício L.;Rangel, Elizabeth F.;
Cadernos de Saúde Pública , 2007, DOI: 10.1590/S0102-311X2007000300030
Abstract: the sand fly fauna in itatiaia national park, rio de janeiro, brazil, was investigated in different habitats ranging from sylvatic areas to those altered by human activity related to ecotourism, specifically identifying species that have been suggested as potential leishmaniasis vectors. sand flies were captured from june 2002 to march 2004, using cdc light traps and shannon traps. a total of 1,256 sand fly specimens were captured, from species belonging to genera lutzomyia and brumptomyia: brumptomyia guimaraesi, b. troglodytes, lutzomyia (lutzomyia) amarali, l. lanei, l. migonei, l. sallesi, l. edwardsi, l. tupynambai, l. (pintomyia) pessoai, l. (p.) bianchigalatie, l. rupicola, l. (psathyromyia) shannoni, l. pascalei, l. (psychodopygus) matosi, l. (p.) davisi, l. (p.) hirsuta hirsuta, l. (p.) ayrozai, l. peresi, l. monticola, and l. misionensis. worthy of special attention were four species that are considered potential vectors for cutaneous leishmaniasis in brazil: l. ayrozai, l. hirsuta hirsuta, l. migonei, and l. davisi, representing 19.19% of the specimens captured in this study.
Distribui??o de Aedes aegypti e do dengue no Estado do Maranh?o, Brasil
Rebêlo, José Manuel Macário;Costa, Jackson Maurício Lopes;Silva, Francinaldo Soares;Pereira, Yrla Nívea Oliveira;Silva, Jocelma Matos da;
Cadernos de Saúde Pública , 1999, DOI: 10.1590/S0102-311X1999000300004
Abstract: dengue and aedes aegypti are widespread in the state of maranh?o. during 1995, 87 of the 136 of the state's counties, including 176 towns and 480,687 households, were studied, of which 30 counties (34.4%), 118 towns (67.0%) and 10,357 households (2.1%) were positive for aedes aegypti. the positive counties are distributed as follow: 3 on s?o luís island, 7 in the amazonia of maranh?o, 12 in the southern zone of the cerrados or savannas, and 5 in the mixed forest/savanna/palm grove zone. one positive county for ae. aegypti was located in each of the following: alluvial fields, forest/palm grove, and sand dune/shoals areas. the ae. aegypti-positive household rates were higher in the amazonia of maranh?o (3.5%) and on s?o luís island (2.5%), because they are the most heavily traveled migratory and trade routes between maranh?o and neighboring states and are also the state's main economic centers. household infestation rates for ae. aegypti and reported dengue case rates were higher during the rainy season, showing the importance of rain in forming prime breeding sites for aedes and spreading dengue.
Detección de triatominos (Hemiptera: Reduviidae) en ambientes domésticos y extradomésticos. Corrientes, Argentina
Damborsky, Miryam Pieri;Bar, María Esther;Oscherov, Elena Beatriz;
Cadernos de Saúde Pública , 2001, DOI: 10.1590/S0102-311X2001000400018
Abstract: in order to identify intra- and extra-domiciliary triatomines, a study in different counties of corrientes province, argentina, was conducted from 1985 to 1995. triatoma infestans (klug, 1834), triatoma sordida (st?l, 1859), panstrongylus geniculatus (latreille, 1811), and panstrongylus megistus (burmeister, 1835) were detected in domestic ecotopes. t. infestans and t. sordida were also found in the peridomicile. triatoma platensis (neiva, 1913), psammolestes coreodes (bergroth, 1911), t. sordida, and triatoma rubrovaria (blanchard, 1843) were collected in sylvatic biotopes. t. infestans was confirmed as the predominant species in the domestic environment and was the only species infected with trypanosoma cruzi-like parasites. t. sordida was most frequent in extra-domiciliary ecotopes, but could be considered capable of colonizing human dwellings.
Lista preliminar das espécies do gênero Lutzomyia, Fran?a, 1924 (Psychodidae, Phlebotominae) do Estado do Maranh?o, Brasil
Rebêlo, José Manuel Macário;Mendes, Walter Araújo;Costa, Jackson Maurício Lopes;Cavaleiro, Nelson;
Cadernos de Saúde Pública , 1996, DOI: 10.1590/S0102-311X1996000400014
Abstract: this paper presents a preliminary check list of lutzomyia species from maranh?o state. the information derives from data gathered in the scarce literature on the distribution patterns of neotropical phlebotomines. there are 40 species reported in the state. most are amazonian in their distribution, while others come from the savanna domain of central brazil or have a widespread distribution in the neotropics. this can be explained by maranh?o's transitional position between the north, northeast, and central south of the country. of the species of sandflies reported, seven are currently considered vectors for cutaneous and visceral leishmaniases.
Impacto de altera??es ambientais na ecologia de flebotomíneos no sul do Brasil
Teodoro, Ueslei;Kühl, Jo?o B.;Santos, Demilson R. dos;Santos, élcio S. dos;
Cadernos de Saúde Pública , 1999, DOI: 10.1590/S0102-311X1999000400025
Abstract: tree felling around a chicken coop and periodic insecticide spraying at the palmital farm in the county of terra boa in southern brazil impacted the ecology of sand fly species. the most prevalent species (51.6%) before clearing the trees and insecticide spraying was lutzomyia migonei (fran?a, 1920), and it is now lutzomyia (nyssomyia) whitmani (antunes & coutinho, 1939) (89.8%). there was a highly significant difference between the proportions of l. whitmani reported by this paper (89.8%) and another publication before the tree felling and insecticide spraying (32.6%).
Sitios de cría y actividad de picadura de especies de Anopheles en el municipio de Cimitarra, Santander, Colombia
Brochero,Helena; Pareja,Paula Ximena; Ortiz,Gloria; Olano,Víctor Alberto;
Biomédica , 2006,
Abstract: introduction. forty five percent of malaria cases in the department of santander, colombia originate in the municipality of cimitarra. this locality has reported cases from the rural and urban areas. the population between 15 and 45 years of age is the most affected. additionally, cimitarra has registered malaria cases in children under 1 year of age. objective. to determine the biology and behavioral aspects of anopheles mosquitoes from cimitarra to more effectively orient control strategies. materials and methods. during october to december/2002 and march/2003, anopheline collections were undertaken. isofamilies were obtained from 620 wild females. results. the following species were found in order of abundance: anopheles (nyssorhynchus) triannulatus (neiva y pinto 1922), anopheles (nyssorhynchus) nuneztovari gabaldón 1940, anopheles (nyssorhynchus) rangeli gabaldón, cova-garcía y lópez 1940, anopheles (anopheles) pseudopunctipennis theobald 1901, anopheles (anopheles) mattogrosensis lutz y neiva 1911 and anopheles (anopheles) neomaculipalpus curry 1933. the highest biting rate (0.5) was recorded for an. nuneztovari and an. triannulatus indoors between 20-21 hours. forty two breeding places were sampled, 81% were fish ponds, 9.5% puddles and 2.3% cement tanks. eighty seven percent of fish ponds were located near dwellings, being positive for anopheline larvae. conclusion. this study has shown that in cimitarra cryptic and sister species of anopheles genus occur in sympatry, nyssorhynchus subgenera.
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