Phlebotomine sand flies (Diptera: Psychodidae: Phlebotominae) in urban rainforest fragments, Manaus – Amazonas State, Brazil

Rocha, Liliane Coelho da; Freitas, Rui Alves de; Franco, Antônia Maria Ramos

doi:10.1016/j.actatropica.2013.01.007

Cited by 4 publications

(3 citation statements)

References 31 publications

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“…Interesting to note that in residences where Leishmaniasis had been reported, captured female L. quinquefer was fivefold higher than those of males, but only threefold higher in households with no reported cases ( Table 2). The literature used dedicated to describe sand flies' population by sex, does not satisfactorily elucidate the difference between male and females' densities (Dias et al, 2007;Domingos et al, 1998;Nascimento et al, 2013;Rocha et al, 2013). In some instances, inclusive, there have been records of considerably higher prevalence of one sex over the other (Dias et al, 2007;Nascimento et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Phlebotomine fauna in the urban area of Timóteo, State of Minas Gerais, Brazil

et al. 2014

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This work is characterized by an entomological research and an investigation on whether seasonal behaviours can be associated to the phlebotomine fauna found in the urban area of Timóteo-MG - an endemic focus of tegumentary leishmaniasis (TL). The analysis of the seasonal behaviour of sand flies has taken into account the following climatic variables: rainfall, relative humidity and temperature. Automatic light traps were installed in households between 2009 and 2010. The sand fly species with the highest number captured was Lutzomyia whitmani (66.5%), a TL vector species, whose abundance has provided strong evidences that this species is the main vector of TL in the municipality of Timóteo, with its cycle of transmission developing in its urban area. Amongst the results observed in the analyses of seasonal behaviour, only temperature conveyed particular association between seasonal occurrence of sand flies and climate variables. The findings of this study may assist the local epidemiological surveillance agency in defining strategies and directing efforts for controlling these insects.

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Section: Resultsmentioning

confidence: 99%

Phlebotomine fauna in the urban area of Timóteo, State of Minas Gerais, Brazil

et al. 2014

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“…These insects are mainly found in primary forests [ 4 , 5 ]. However, recent studies indicate that sand flies have adapted to disturbed environments, such as forest fragments, and peridomicile areas where domestic animals are present (dogs, chickens, pigs) [ 6 - 8 ]. Such close proximity to human habitation increases the risk of ACL infection.…”

Section: Introductionmentioning

confidence: 99%

“…antunesi (Coutinho), Ny. umbratilis (Ward e Fraiha), and Trichophoromyia ubiquitalis (Mangabeira) [ 6 , 8 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Ecological aspects and molecular detection of Leishmania DNA Ross (Kinetoplastida: Trypanosomatidae) in phlebotomine sandflies (Diptera: Psychodidae) in terra firme and várzea environments in the Middle Solimões Region, Amazonas State, Brazil

Júnior

Teles²,

Santos³

et al. 2015

Parasites Vectors

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BackgroundPhlebotomine sand flies (Diptera: Psychodidae) are insects of medical importance due to the role that some species play in the transmission of leishmaniasis. This work aimed to study some ecological aspects among sand flies fauna inhabiting two different environments: the várzea (lowland Amazonian forest) and terra firme (upland Amazonian forest), both located in Tefé Municipality, Amazonas State, Braziland to detect Leishmania infection in those phlebotomine populations.MethodsSand flies were collected using HP light traps. Collection took place over the course of six months: January, February, April, August, September, and October of 2013. To detect natural infection by Leishmania, DNA samples were extracted from female sand flies and submitted to Polymerase Chain Reaction (PCR) targeting the kDNA gene; Leishmania species were identified by PCR-RFLP targeting the hsp70 gene and genetic sequencing.ResultsIn all, 5,716 individuals were collected, and 46 species were identified. Trichophoromyia ubiquitalis (3,330 – 58.26%) and Nyssomyia antunesi (661 – 11.26%) were the most abundant species. Species richness was greater in terra firme environments (42 species) than in the várzea environments (22 species), and forests ecotopes (43 species) were richer than peridomiciles (28 species). DNA of Leishmania was found in Th. ubiquitalis and Psychodopygus davisi, both of which inhabit the terra firme environment and sequencing analysis confirmed the presence of Leishmania (Viannia) lainsoni DNA in Th. ubiquitalis in Tefé Municipality.ConclusionsThe high abundance of Th. ubiquitalis and Ps. davisi and detection of DNA of Leishmania sp. may indicate that both species could be putative vectors for American Cutaneous Leishmaniasis (ACL) in the terra firme environment of Tefé. The sand fly fauna found in várzea is rich and diverse, exhibiting several species, nevertheless the seasonal hydric stress during part of the year that could influence the local diversity, if compared with other studies. This is the first report in Amazonas State of Th. ubiquitalis with presence of L. (V.) lainsoni DNA.

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Variation of the Phlebotominae (Diptera: Psychodidae: Phlebotominae) Assemblage in Response to Land Use Changes in an Endemic Area of Leishmania Transmission in Northeast Argentina

Fernández

Manteca-Acosta

Cueto

et al. 2020

Journal of Medical Entomology

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Leishmaniases are a global health problem and in Argentina are considered emerging diseases. The new transmission scenarios of tegumentary leishmaniasis are especially important given that large areas of forest are being transformed into rural and urban systems. The aim of this study was to analyze the impact of the construction of a large public building and a neighborhood on the assemblage of Phlebotominae in a rural area with forest remnants and to correlate the changes observed in the species assemblage with characteristics of the environment. Entomological surveys with light traps were conducted on the construction campus in the northeastern region of Argentina at six sites representing different environmental situations. Structural environmental characteristics and meteorological conditions were recorded and analyzed. At least 16 species of Phlebotominae sand flies were collected, the most prevalent being Nyssomyia whitmani (Antunes & Coutinho), followed by the genus Brumptomyia (França & Parrot) and Migonemyia migonei (França). Our study provides evidence of how the structure of the assemblages and prevalent species respond to anthropogenic disturbances. As the construction progressed, both Ny. whitmani and the genus Brumptomyia were favored. The genus Brumptomyia was favored at sites surrounded by high proportions of forest, within patches of remnant vegetation, and relatively far from anthropogenic disturbances, while Ny. whitmani, the main vector of tegumentary leishmaniasis in the region, increases their abundant at short and intermediate distances from vegetation margins and areas close to anthropogenic disturbances, therefore increasing the risk of human exposure to vectors.

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Phlebotomine sand flies (Diptera: Psychodidae: Phlebotominae) in urban rainforest fragments, Manaus – Amazonas State, Brazil

Cited by 4 publications

References 31 publications

Phlebotomine fauna in the urban area of Timóteo, State of Minas Gerais, Brazil

Phlebotomine fauna in the urban area of Timóteo, State of Minas Gerais, Brazil

Ecological aspects and molecular detection of Leishmania DNA Ross (Kinetoplastida: Trypanosomatidae) in phlebotomine sandflies (Diptera: Psychodidae) in terra firme and várzea environments in the Middle Solimões Region, Amazonas State, Brazil

Variation of the Phlebotominae (Diptera: Psychodidae: Phlebotominae) Assemblage in Response to Land Use Changes in an Endemic Area of Leishmania Transmission in Northeast Argentina

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