Leishmaniose tegumentar americana na Ilha Grande, Rio de Janeiro: VI. observações sobre a freqüência horária e variação mensal dos transmissores

Filho, Nelson A. de Araújo; Sherlock, Ítalo Rodrigues de Araújo; Coura, J. Rodrigues

doi:10.1590/s0037-86821981000200007

Cited by 3 publications

(7 citation statements)

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“…infection detected in L. migonei in Praia Vermelha (10.3%) suggest the role of this sand fly species in CL transmission in this locality. These results complement the previous study of Araújo Filho et al [ 11 , 12 ], who commented about L. migonei importance as CL vector in this locality.…”

Section: Discussionsupporting

confidence: 92%

“…The two most abundant species were L. (N.) intermedia and L. migonei , captured even inside houses, which was also observed in previous studies from Ilha Grande [ 11 , 12 , 14 - 16 ]. These species are considered important vectors of Leishmania (Viannia) braziliensis in Brazil’s Southeast region and are commonly captured in high abundance [ 24 , 32 , 33 ].…”

Section: Discussionsupporting

confidence: 82%

“…This is particularly evident in Praia Vermelha, locality with recent deforested areas by the landslides of 2010. The same vector species found in 1978 by Araújo Filho et al [ 11 , 12 ] remain present in the deforested areas. Therefore, the occurrence of potential vectors L. (N.) intermedia, L. migonei, L. (N.) flaviscutellata and L. (L.) longipalpis in peridomestic areas of Ilha Grande’s villages must be highlighted.…”

Section: Discussionsupporting

confidence: 68%

“…This was expected, because Ilha Grande has few published studies about its phlebotomine sand fly fauna, especially involving at least one year of monthly monitoring [ 14 - 16 ]. The exception is the study by Araújo Filho et al [ 11 , 12 ], who performed sand fly captures in Praia Vermelha for 16 consecutive months. These five species had already been previously detected in Rio de Janeiro State [ 30 ] and in other Atlantic Forest areas of Espírito Santo State [ 27 ] and Paraná State [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

“…This island has records of sporadic CL human cases since the first outbreak, which occurred in the small fisherman community of Praia Vermelha in 1975 [ 9 , 10 ]. The first sand fly survey of the island was published by Araújo Filho et al [ 11 , 12 ], who detected potential CL vector species, such as L. (N.) intermedia , L. migonei , and L. (N.) flaviscutellata . The other captured species, without known medical importance, were Brumptomyia cunhai , B. nitzulescui , L. edwardsi , L. lanei , L. pascalei and L. (Micropygomyia) schreiberi .…”

Section: Introductionmentioning

confidence: 99%

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Leishmaniasis transmission in an ecotourism area: potential vectors in Ilha Grande, Rio de Janeiro State, Brazil

Carvalho

Maximo²,

Costa

et al. 2013

Parasites Vectors

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BackgroundThe south coast of Rio de Janeiro State, in Brazil, is endemic for cutaneous and visceral leishmaniases and is frequently visited by tourists from different parts of the world. Since the complex epidemiology of leishmaniases demands local studies, the goal of this study was to investigate the phlebotomine sand fly fauna and leishmaniases transmission in Ilha Grande, an ecotourism area of Angra dos Reis municipality.MethodsSand fly fauna was sampled in three monitoring stations using HP light traps in domiciles, peridomiciles and forests. Species abundance was evaluated by the Index of Species Abundance. A Leishmania natural infection survey was done using multiplex PCR and dot blot hybridization.ResultsDuring 15 consecutive months of sand fly monitoring, 1093 specimens from 16 species were captured. The potential leishmaniases vectors found were Lutzomyia (Nyssomyia) intermedia, L. migonei, L. (N.) flaviscutellata, L. (Psychodopygus) ayrozai and L. (Lutzomyia) longipalpis. Five species were new records in Ilha Grande: L. (Sciopemyia) microps, L. termitophila, L. firmatoi, L. rupicola and L. (P.) ayrozai. Higher species richness was found inside forest areas, although potential leishmaniases vectors were present in deforested areas, peridomiciles and inside houses. Lutzomyia (N.) intermedia and L. migonei were the most abundant species. Females of L. migonei showed a high rate (10.3%) of natural infection by Leishmania (Viannia) sp., probably Leishmania (V.) braziliensis.ConclusionsThe detection of leishmaniases transmission and potential vectors in Ilha Grande is of public health concern, especially because tourists are frequently visiting the island. Besides reinforcing the epidemiological importance of L. (N.) intermedia in Rio de Janeiro State, the role of L. migonei in cutaneous leishmaniasis transmission is highlighted with its high rate of Leishmania natural infection. The finding of L. (L.) longipalpis confirmed the human autochthonous case of visceral leishmaniasis from the island. The presence of L. (N.) flaviscutellata in peridomestic areas is also an important finding, since the species is involved in the transmission of diffuse cutaneous leishmaniasis. Health education practices directed to the local community and tourists are important control actions that can be taken in Ilha Grande to reduce the burden of leishmaniases.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 82%

Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Leishmaniasis transmission in an ecotourism area: potential vectors in Ilha Grande, Rio de Janeiro State, Brazil

Carvalho

Maximo²,

Costa

et al. 2013

Parasites Vectors

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Resultados preliminares de um projeto sobre a ecologia dos flebotomineos vetores de leishmaniose tegumenar no estado da Bahia

Sherlock

Maia

Dias-Lima

1996

Rev. Soc. Bras. Med. Trop.

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Preliminary data of a project about the ecology of the Phlebotominae (sandflies) in a tegumentary leishmaniasis area of coconut plantation in the south of the State of Bahia, Brazil are presented. There are 60 dwellings far of one another, where existed 31 dogs and 229 inhabitants. Among them 41.5% were Montenegro positive; 37.5% from these had scars of healed ulcers and 8.8% had active ulcers. 53% of the house had dogs from which 22% were seropositive; from the 7 dogs with ulcers only 3 were seropositive. 14% of the inspected house harboured sandflies inside them. During two years of observations 72 sentinels hamsters were maintened at houses of patients with leishmaniasis ulcers, but they did not get the infection. During two years of observation, monthly collectings of sandflies were made inside house, chicken pen, curral, tree trunks and open field around a house with a patient with leishmaniasis. The following results were already obtained about the vectors: 5,614 specimens were identified as belonging to fourteen different species of sandflies. Among them Lutzomyia whitmani (92%) and Lutzomyia intermedia (4.8%) were the most abundant species. They are very anthropophilic and can be found inside houses and at peridomestic sites. Probably they are the principal vectors of the disease at domestic places. The other twelve species were less frequent and more found at sylvatic places in inspite they also bite the man. Generally the biting activity of most of the species of the area begins at 5 p.m. in the dusk and reaches its peak at 0 hour a.m., when begins declining until disapear at 7 a.m. L. whitmani was similarly collected with the same density in all lunar phases while L. intermedia was more abundant during the new moon phase. Most of the hundreds sandflies collected during the second year of observations, remains preserved in liquid nitrogen, watching for the adjustment of PCR molecular techniques to be processed for determination of the vector natural infection rates with leishmanias. Final results on all the project will be published as soon as the examination of such material has been processed.

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Biodiversity assessment of Phlebotomine (Diptera: Psychodidae) in an environmental impacted area in Rio de Janeiro State, Brazil

Vieira

Aguiar

Azevedo

et al. 2022

Rev. Inst. Med. trop. S. Paulo

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From October 1994 to September 1996, in the municipality of Mangaratiba, Rio de Janeiro State, phlebotomines were captured on the walls of the houses by means of a manual suction tube and light traps, in the household, the peridomicile and in the forest. As it is an area undergoing a real expansion and an increment in the local tourism, with the purpose of assessing changes in the phlebotomine fauna caused by environmental changes in the region, new captures were made in the same location from October 2015 to September 2016, this time using only light traps. In the two phases of the study, a total of 6,681 phlebotomines were captured. The results indicated that Ny. intermedia and Mg. migonei are fully adapted to this anthropic environment, while Pi. fischeri was more abundant and eclectic, and was probably attracted to exercise hematophagy. Nyssomyia intermedia can be suggested as the main vector of the etiological agent of the American Tegumentary Leishmaniasis in the studied areas. Pintomyia fischeri can also transmit Leishmania braziliensis, both in the environment altered by human action, and in the wild environment. Phlebotomines were captured in greater numbers between 6 and 8 pm in the peridomicile and between 9 and 11 pm in the household. The highest densities of phlebotomines were recorded in December, January and February. Despite almost 20 years between the two studies in the municipality of Mangaratiba, there was no change in the profile of the phlebotomine fauna in general; however, there was a greater density of species of medical importance in areas that suffered environmental impacts.

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Leishmaniose tegumentar americana na Ilha Grande, Rio de Janeiro: VI. observações sobre a freqüência horária e variação mensal dos transmissores

Cited by 3 publications

References 4 publications

Leishmaniasis transmission in an ecotourism area: potential vectors in Ilha Grande, Rio de Janeiro State, Brazil

Leishmaniasis transmission in an ecotourism area: potential vectors in Ilha Grande, Rio de Janeiro State, Brazil

Resultados preliminares de um projeto sobre a ecologia dos flebotomineos vetores de leishmaniose tegumenar no estado da Bahia

Biodiversity assessment of Phlebotomine (Diptera: Psychodidae) in an environmental impacted area in Rio de Janeiro State, Brazil

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