ABSTRACT
A Adultrap é uma nova armadilha feita para capturar fêmeas de Aedes aegypti. Foram realizados testes para avaliar sua especificidade tendo como referência a técnica da aspiração da espécie em abrigos artificiais. A Adultrap ficou exposta por 24 horas no intradomicílio e peridomicílio de 120 casas sorteadas em dois bairros da Cidade de Foz do Iguaçu, Estado do Paraná. O teste estatístico foi o modelo log-linear de Poisson. O resultado foi a captura de 726 mosquitos Culicidae, dos quais 80 eram Aedes aegypti. A Adultrap capturou apenas fêmeas desta espécie, enquanto o aspirador os dois sexos de Aedes aegypti e mais cinco outras espécies. A Adultrap capturou Aedes aegypti dentro e fora das casas, mas a análise indicou que no peridomicílio a armadilha capturou significantemente mais fêmeas do que a aspiração. Também, ficou evidenciada a sensibilidade da Adultrap para detectar Aedes aegypti em situação de baixa freqüência.
The Adultrap is a new trap built for capturing females of Aedes aegypti. Tests were carried out to evaluate the specificity of this trap in comparison with the technique of aspiration of specimens in artificial shelters. Adultraps were kept for 24 hours inside and outside 120 randomly selected homes in two districts of the city of Foz do Iguaçú, State of Paraná. The statistical test was Poisson's log-linear model. The result was 726 mosquitoes captured, of which 80 were Aedes aegypti. The Adultrap captured only females of this species, while the aspiration method captured both sexes of Aedes aegypti and another five species. The Adultrap captured Aedes aegypti inside and outside the homes, but the analysis indicated that, outside the homes, this trap captured significantly more females than aspiration did. The sensitivity of the Adultrap for detecting females of Aedes aegypti in low-frequency situations was also demonstrated.
Subject(s)
Animals , Male , Female , Aedes , Insect Vectors , Mosquito Control/instrumentation , Equipment Design , Poisson DistributionABSTRACT
Apresenta um repertório de comentários concernentes, direta ou indiretamente, a Adolpho Lutz, extraídos de entrevistas que antigos pesquisadores e técnicos do IOC concederam aos integrantes do projeto Memória de Manguinhos, da Casa de Oswaldo Cruz (COC), entre 1986 e 1989.
Subject(s)
Research Personnel , BrazilABSTRACT
Dirofilaria immitis is a widespread mosquito-borne parasite that causes dirofilariasis, a commonly diagnosed disease of dogs that is rarely reported in cats and humans. A mosquito survey was conducted in Itacoatiara in the State of Rio de Janeiro, from March 1995 to February 1996, using canine, feline and human baits. A total of 3.667 mosquitos were dissected for D. immitis larvae, representing 19 species and 10 genera. From those, Ae. scapularis, Ae. taeniorhynchus, Cx quinquefasciatus, Cx. declator, Cx. saltanensis and Wy. bourrouli were found infected with D. immitis parasites, and among those, only the first three harbored infective larvae. The majority of larvae were found in the Malpighian tubules (889/936), and larval melanization was observed in the two Aedes species. In descending order, the best vector were Ae. scapularis, Ae. taeniorhynchus, and Cx. quinquefasciatus which alternate seasonally in importance. Cx. quinquefasciatus is suggested to be a vector to cats. The potential transmission of D. immitis parasites by these three vectors to man is discussed.
Subject(s)
Animals , Culicidae/parasitology , Dirofilaria immitis/parasitology , Insect Vectors , Aedes/parasitology , Culex/parasitologyABSTRACT
Heartworm, a chronic fatal mosquito-borne canine disease, is frequently diagnosed in dogs from the State of Rio de Janeiro, where its prevalence is 29,7 per cent in the city of Niteroi. Nevertheless it is rarely detected in cats (0.8 per cent) from the same state. Dogs are primary source of infection to mosquitoes, because cats either do not demonstrate microfilaremia or it is too low and transient for transmission. A mosquito survey was conducted in Itacoatiara, Niteroi, from March 1995 to February 1996, using canine, feline and human baits. A total of 21 mosquito species (3,888 females) was collected and biting frequency was highest at dusk. The four species collected most frequently (88.9 per cent) were: Aedes taeniorhynchus (30 per cent of the total catch; with the peak in May/June); Culex quinquefasciatus (22,5 per cent; August/October); Aedes scapularis (19,4 per cent; August, October/November and January) and Culex declarator (17 per cent November/January). Human baits were attractive to these species and dogs were significantly more attractive to them than cats. Ae. taeniorhynchus, Cx. quinquefasciatus, Ae. scapularis, Cx. declarator and Cx. nigripalpus are the most likely mosquito species to transmit Dirofilaria immitis parasites to dogs and may transmit the parasite to humans. It is also suggested that the vector to cats belongs to the genus Culex.
Subject(s)
Humans , Animals , Cats , Dogs , Aedes/parasitology , Culex/parasitology , Dirofilaria immitis , Dirofilariasis , Feeding Behavior , Brazil , Dog DiseasesABSTRACT
On a new tropical species of the genus Djalmabatista Fittkau, 1968 (Diptera, Chironomidae) - A new non-biting midge for the genus Djalmabatista Fittkau, 1968 (Tanipodinae, Chironomidae) from Brazil is described
Subject(s)
Animals , Chironomidae/anatomy & histology , Brazil , Chironomidae/classificationABSTRACT
Contribution to knowledge of the genus Dimecoenia Cresson, 1916 - V. On new species from Rio de Janeiro, RJ (Diptera: Ephydridae) - New species of several speciemens of several specimens from Rio de Janeiro county, caught on the Spinosa platensis microalgae breeding in the concret thanks is described
Subject(s)
Animals , Diptera/classification , Brazil , Diptera/anatomy & histologyABSTRACT
On a new tropical genus of the subfamily Tanypodinae (Diptera, Chironomidae) - A new neotropical genus and a new species of a non-biting midge for the subfamily Tanypodinae from Brazil are described. The new genus is near Tanypus Meigen, 1803 and Procladius Skuse, 1889, but differs of both by wings and male terminalia
Subject(s)
Animals , Chironomidae/classification , Brazil , Chironomidae/anatomy & histologyABSTRACT
On a new neotropical species of the genus Tanypus Meigen, 1803 (Diptera: Chironomidae, Tanypodinae) - A new neotropical species of the genus Tanypus Meigen, 1803, misidentified by Oliveira (1944) as Tanypus stellatus Coquillett, 1902, is described
Subject(s)
Animals , Chironomidae/classification , Brazil , Chironomidae/anatomy & histologyABSTRACT
In this paper we describe a new species of a non-biting midge of the genus Aedokritus Roback, 1958 (Chironominae, Chironomidae) from Brazil and Bolívia. That is the fifth species of this genus. The other species of the genus are: A. penicilligerus (Edwards, 1931), from Argentina and Peru; A. pruinescens (Edwards, 1931), from Argentina; A. platycnemis (Edwards, 1931), from Argentina; and A. sartis Roback, 1960, from Brazil.