ABSTRACT
Aedes (Stegomyia) albopictus (Skuse, 1854) was reported in Brazil for the first time in 1986 and has shown marked expansion throughout the Brazilian territory. During a routine activity to control dengue fever conducted by the Division of Entomology of the Municipal Health Department in Rio Branco city, adults and immatures of Culicidae were collected in a peri-urban area. The identified Culicidae forms indicated that they belonged to the species Ae. albopictus. This is the first official record of the presence of Ae. albopictus in the Acre State, confirming its current presence in all Brazilian states.
Subject(s)
Aedes , Animals , Brazil , Environment , Cities , EntomologyABSTRACT
ABSTRACT Aedes (Stegomyia) albopictus (Skuse, 1854) was reported in Brazil for the first time in 1986 and has shown marked expansion throughout the Brazilian territory. During a routine activity to control dengue fever conducted by the Division of Entomology of the Municipal Health Department in Rio Branco city, adults and immatures of Culicidae were collected in a peri-urban area. The identified Culicidae forms indicated that they belonged to the species Ae. albopictus. This is the first official record of the presence of Ae. albopictus in the Acre State, confirming its current presence in all Brazilian states.
ABSTRACT
BACKGROUND: The American cutaneous leishmaniasis (ACL) is expanding in peri-urban environments. METHODS: An entomological survey was conducted in the area of the occurrence of an autochthonous urban case of ACL. Sandflies and a parasitological slide of the human case were submitted for molecular diagnosis. RESULTS: Nyssomyia whitmani and Ny. antunesi were the most frequently collected species. Ny. whitmani and Bichromomyia flaviscutellata were positive for Leishmania guyanensis and L. lainsoni, respectively. The human case tested positive for L. lainsoni. CONCLUSIONS: Sandflies and Leishmania parasites present in urban forest may occur frequently in nearby domiciliary environments; thus, these areas must be monitored.
Subject(s)
Leishmania guyanensis , Leishmania , Leishmaniasis, Cutaneous , Psychodidae , Animals , Humans , Urbanization , Insect Vectors/parasitology , Leishmaniasis, Cutaneous/epidemiology , Psychodidae/parasitology , Brazil/epidemiologyABSTRACT
ABSTRACT Background: The American cutaneous leishmaniasis (ACL) is expanding in peri-urban environments. Methods: An entomological survey was conducted in the area of the occurrence of an autochthonous urban case of ACL. Sandflies and a parasitological slide of the human case were submitted for molecular diagnosis. Results: Nyssomyia whitmani and Ny. antunesi were the most frequently collected species. Ny. whitmani and Bichromomyia flaviscutellata were positive for Leishmania guyanensis and L. lainsoni, respectively. The human case tested positive for L. lainsoni. Conclusions: Sandflies and Leishmania parasites present in urban forest may occur frequently in nearby domiciliary environments; thus, these areas must be monitored.
ABSTRACT
INTRODUCTION: This study describes the occurrence of triatomines, and their positivity for trypanosomatids, in a residential complex in Rio Branco, Acre, Brazil. METHODS: Triatomines were collected through direct capture in a home environment. Positivity analysis for trypanosomatids was performed by PCR assays. RESULTS: Collected insects consisted of 31 Rhodnius robustus, 4 Rhodnius montenegrensis, and 1 Panstrongylus geniculatus specimens. All were adults, with no presence of domiciliation, and with an infection rate of 30.6%. CONCLUSIONS: Future studies are recommended in other locations of Rio Branco in order to develop a georeference database of the occurrence of triatomines in urban areas.
Subject(s)
Insect Vectors/classification , Panstrongylus/classification , Rhodnius/classification , Trypanosoma/isolation & purification , Animals , Brazil , Chagas Disease/transmission , Insect Vectors/parasitology , Panstrongylus/parasitology , Rhodnius/parasitology , Trypanosoma/classification , Urban PopulationABSTRACT
INTRODUCTION: This communication reports the first occurrence of Panstrongylus lignarius in the State of Acre, Brazil. METHODS: A specimen of P. lignarius was collected from a residence in a rural area of the municipality of Rio Branco, Acre, Western Amazon. RESULTS: This new report of P. lignarius extends the distribution of this species to eight Brazilian states, and also increases the number of species of Triatominae described from the state of Acre from nine to ten. CONCLUSIONS: The occurrence of P. lignarius deserves attention, since this species has the potential for domiciliation and transmitting Trypanosoma cruzi.
Subject(s)
Insect Vectors/classification , Panstrongylus/classification , Animals , Brazil , Insect Vectors/anatomy & histology , Panstrongylus/anatomy & histology , Rural PopulationABSTRACT
Abstract INTRODUCTION: This study describes the occurrence of triatomines, and their positivity for trypanosomatids, in a residential complex in Rio Branco, Acre, Brazil. METHODS: Triatomines were collected through direct capture in a home environment. Positivity analysis for trypanosomatids was performed by PCR assays. RESULTS Collected insects consisted of 31 Rhodnius robustus, 4 Rhodnius montenegrensis, and 1 Panstrongylus geniculatus specimens. All were adults, with no presence of domiciliation, and with an infection rate of 30.6%. CONCLUSIONS Future studies are recommended in other locations of Rio Branco in order to develop a georeference database of the occurrence of triatomines in urban areas.
Subject(s)
Animals , Panstrongylus/classification , Rhodnius/classification , Trypanosoma/isolation & purification , Insect Vectors/classification , Panstrongylus/parasitology , Rhodnius/parasitology , Trypanosoma/classification , Urban Population , Brazil , Chagas Disease/transmission , Insect Vectors/parasitologyABSTRACT
Abstract INTRODUCTION: This communication reports the first occurrence of Panstrongylus lignarius in the State of Acre, Brazil. METHODS: A specimen of P. lignarius was collected from a residence in a rural area of the municipality of Rio Branco, Acre, Western Amazon. RESULTS: This new report of P. lignarius extends the distribution of this species to eight Brazilian states, and also increases the number of species of Triatominae described from the state of Acre from nine to ten. CONCLUSIONS: The occurrence of P. lignarius deserves attention, since this species has the potential for domiciliation and transmitting Trypanosoma cruzi.
Subject(s)
Animals , Panstrongylus/classification , Insect Vectors/classification , Panstrongylus/anatomy & histology , Rural Population , Brazil , Insect Vectors/anatomy & histologyABSTRACT
INTRODUCTION: This communication reports the occurrence of Rhodnius neglectus in the State of Acre, Brazil. METHODS: An adult male R. neglectus specimen was collected from the Catuaba Experimental Reserve, which is located in the municipality of Senador Guiomard. RESULTS: This increases the number of triatomine species reported from the State of Acre to eight and is also the first report of R. neglectus from the Brazilian Western Amazon Region. CONCLUSIONS: The occurrence of R. neglectus is alarming because even though the species is wild, it can invade and colonize human dwellings and peridomiciles, thereby increasing Chagas disease transmission.
Subject(s)
Insect Vectors/anatomy & histology , Rhodnius/anatomy & histology , Animals , Brazil , Chagas Disease/transmission , Insect Vectors/classification , Male , Rhodnius/classificationABSTRACT
Abstract INTRODUCTION This communication reports the occurrence of Rhodnius neglectus in the State of Acre, Brazil. METHODS An adult male R. neglectus specimen was collected from the Catuaba Experimental Reserve, which is located in the municipality of Senador Guiomard. RESULTS This increases the number of triatomine species reported from the State of Acre to eight and is also the first report of R. neglectus from the Brazilian Western Amazon Region. CONCLUSIONS The occurrence of R. neglectus is alarming because even though the species is wild, it can invade and colonize human dwellings and peridomiciles, thereby increasing Chagas disease transmission.
Subject(s)
Animals , Male , Rhodnius/anatomy & histology , Insect Vectors/anatomy & histology , Rhodnius/classification , Brazil , Chagas Disease/transmission , Insect Vectors/classificationABSTRACT
INTRODUCTION: The occurrence of Triatoma sordida in the Brazilian Western Amazon is reported for the first time. METHODS: Triatoma sordida specimens were collected from a Gallus gallus nest in a peridomiciliary area of Senador Guiomard municipality in the state of Acre. RESULTS: The number of triatomine species in Acre increased from six to seven with this first report of T. sordida in the Brazilian Western Amazon. CONCLUSIONS: The occurrence of T. sordida in Acre is of concern since it is among the most captured triatomines in peridomiciliary environments in Brazil, and carries a high potential for vector transmission.
Subject(s)
Chickens/parasitology , Insect Vectors/parasitology , Triatoma/parasitology , Trypanosoma cruzi/isolation & purification , Animals , Brazil , Chagas Disease/transmission , Insect Vectors/classification , Triatoma/classificationABSTRACT
Abstract INTRODUCTION The occurrence of Triatoma sordida in the Brazilian Western Amazon is reported for the first time. METHODS Triatoma sordida specimens were collected from a Gallus gallus nest in a peridomiciliary area of Senador Guiomard municipality in the state of Acre. RESULTS The number of triatomine species in Acre increased from six to seven with this first report of T. sordida in the Brazilian Western Amazon. CONCLUSIONS The occurrence of T. sordida in Acre is of concern since it is among the most captured triatomines in peridomiciliary environments in Brazil, and carries a high potential for vector transmission.
Subject(s)
Animals , Triatoma/parasitology , Trypanosoma cruzi/isolation & purification , Chickens/parasitology , Insect Vectors/parasitology , Triatoma/classification , Brazil , Chagas Disease/transmission , Insect Vectors/classificationABSTRACT
INTRODUCTION: This paper reports, for the first time, the presence of Rhodnius stali in the state of Acre and in the Brazilian Amazon. METHODS: Specimens of R. stali were collected by the Federal University of Acre in Rio Branco. RESULTS: The number of Triatominae species in the State of Acre increased from five to six. This was also the first report of R. stali in the Brazilian Amazon. CONCLUSIONS: The occurrence of R. stali is worrisome, since this species has been found naturally infected by Trypanosoma cruzi and there has been evidence of its domiciliation capabilities.
