Ecology of Lutzomyia longipalpis in an area of visceral leishmaniasis transmission in north-eastern Brazil

Costa, Pietra Lemos; Dantas‐Torres, Filipe; Silva, Fernando José da; Guimarães, Vanessa Cristina Fitipaldi Veloso; Gaudêncio, Kamila; Brandão-Filho, Sinval Pinto

doi:10.1016/j.actatropica.2013.01.011

Cited by 47 publications

(37 citation statements)

References 30 publications

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“…However, population dynamics of sand flies may vary from region to region, as well as with climatic variables (20) (21) . In this study, and others (22) (23) (24) (25) , the highest sand fly frequency and diversity occurred during the rainy season.…”

Section: Gender (%)mentioning

confidence: 99%

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Frequency and diversity of phlebotomine sand flies (Diptera: Psychodidae) in Sinop, State of Mato Grosso, Brazil

Thies

Bronzoni

Espinosa

et al. 2016

Rev. Soc. Bras. Med. Trop.

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Introduction: Understanding the diversity of sand flies is important for the epidemiology and control of leishmaniasis. This study aimed to understand the frequency, diversity, and seasonality of medically important sand flies in the municipality of Sinop, State of Mato Grosso, Brazil. Methods: The study was conducted in an urban area, including four ecotypes with different levels of urbanization. The sand flies were collected using light traps for three nights per month, from May 2014 to April 2015. Results: A total of 62,745 sand flies was collected, 52.34% of which were female. The frequency and diversity of sand flies was the highest in areas of permanent preservation (APPs) (96.85%), and was lower in more urbanized areas. Lutzomyia dasypodogeton was the most frequent species in the APPs. Lutzomyia antunesi was the most frequent in neighborhoods with forest fragments and neighborhoods around APPs, and L. aragaoi was the most frequent in completely urbanized neighborhoods. A higher frequency and diversity of sand flies was observed in the rainy season (87.92%) than in the dry season (12.08%). Eight medically important species were captured, and Lutzomyia antunesi, which is associated with American cutaneous leishmaniasis and visceral leishmaniasis, was observed in all ecotypes throughout the year. Conclusions: We observed a high frequency and diversity of sand flies in all urban areas, and some species collected were major vectors of leishmaniasis. These results support the need for further studies of the natural rates of infection of these insects and the circulation of the disease in hosts and vectors.

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Section: Gender (%)mentioning

confidence: 99%

“…neighborhoods located in a completely urbanized area, considered as old neighborhoods (sites 13-18); and IV. APPs (sites [19][20][21][22][23][24] (Figure 1).…”

Section: Sand Fly Collection and Identificationmentioning

confidence: 99%

Frequency and diversity of phlebotomine sand flies (Diptera: Psychodidae) in Sinop, State of Mato Grosso, Brazil

Thies

Bronzoni

Espinosa

et al. 2016

Rev. Soc. Bras. Med. Trop.

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“…This species was collected in large numbers from chicken coops, pigsties, and corrals. In fact, it is known that chickens are among the preferred hosts for the blood meal of L. longipalpis (20) (26) .…”

Section: Discussionmentioning

confidence: 99%

“…The seasonal dynamics of sandfl ies can vary greatly from region to region, and the varying climatic factors, over time, might cause species to have different patterns in the same geographical area (5) (26) . The specimens collected in this study showed abundance in the months of May and July 2015, corresponding to the months before and after the wettest period of the year.…”

Section: Discussionmentioning

confidence: 99%

Sandflies (Diptera: Psychodidae) in an urban area of Northeastern Brazil

Agra

Costa

Duque

et al. 2016

Rev. Soc. Bras. Med. Trop.

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Introduction:The sandfl y fauna is well studied globally. In Brazil, sandfl y fauna is very diverse in the Northeast region, especially in states such as Maranhão, Ceará, and Bahia. However, in the State of Pernambuco, the distribution of these insects is still not well known. Therefore, the objective of this study was to identify the different species that constitute the sandfl y fauna in an urban area in the Northeast region of Brazil, where an outbreak of visceral leishmaniasis (VL) was recently reported. Methods: The sandfl ies were collected from an urban area endemic for VL, at fi ve collection points. The collection of samples was carried out from November 2014 to December 2015, using CDC light traps installed in intradomiciliary and peridomiciliary fashion. Results: The collected sandfl ies (n = 297) belonged to eight species: Lutzomyia lenti, Lutzomyia longipalpis, Lutzomyia sallesi, Lutzomyia migonei, Lutzomyia walkeri, Lutzomyia capixaba, Lutzomyia carmelinoi, and Lutzomyia whitmani. Most of the specimens collected were peridomiciliary (247/297, 83%). L. lenti (154/297, 52%) was the most frequently sampled species, followed by L. longipalpis (88/297, 29.6%), and L. sallesi (42/297, 14.1%), which together accounted for over 90% of the collected sandfl y specimens. Conclusions: The continued presence of L. longipalpis in urban areas, including that in intradomiciliary areas, with a predominance of females, is crucial because of the high possibility of them causing VL outbreaks, since this species is the main vector of Leishmania infantum in Brazil.

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“…It is known that climatic and other factors (such as the presence of vegetation) have an influence on the incidence of phlebotomines (COSTA et al, 2013). In addition, some species may present different seasonal patterns in the same geographic area, due to climatic variations (GUIMARÃES et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Phlebotomines in an area endemic for American cutaneous leishmaniasis in northeastern coast of Brazil

Silva

Miranda

Bezerra‐Santos

et al. 2017

Rev. Bras. Parasitol. Vet.

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Phlebotomines have worldwide distribution with many species present in Brazil, including the northeastern region, where the fauna is very diverse. The aim of this study was to identify the sandfly fauna in an area endemic for American cutaneous leishmaniasis (ACL) in the state of Pernambuco. Sandflies were caught on three consecutive nights every month from October 2015 to September 2016, from 5 pm to 5 am, using seven light traps of Centers for Disease Control (CDC) type. Females were identified and used for molecular Leishmania detection. A total of 2,174 specimens belonging to ten species were collected: Lutzomyia choti (88.2%; 1,917/2,174) was the most abundant species, followed by Lutzomyia whitmani (8.1%; 176/2,174) and Lutzomyia sordellii (1.5%; 33/2,174). The majority of the specimens were collected in peridomestic areas (64.1%; 1,394/2,174) and during the rainy period. All the samples examined were negative for Leishmania spp. The presence of Lutzomyia whitmani indoors and in peridomestic areas indicates that the inhabitants of this area are exposed to the risk of infection by the parasites responsible for ACL.Keywords: Lutzomyia, Leishmania, vectors. ResumoOs flebotomíneos apresentam uma ampla distribuição mundial com muitas espécies presentes no Brasil, inclusive na região Nordeste, onde a fauna é bastante rica. O objetivo desse estudo foi identificar a fauna de flebotomíneos em uma área endêmica para Leishmaniose Tegumentar Americana (LTA), no estado de Pernambuco. As capturas foram realizadas mensalmente, durante três noites consecutivas das 17h às 5h, utilizando sete armadilhas luminosas tipo CDC, no período de outubro de 2015 a setembro de 2016. As fêmeas identificadas foram utilizadas para análise molecular para detecção de Leishmania. Um total de 2.174 espécimes pertencentes a dez espécies foram coletadas: Lutzomyia choti (88,2%; 1.917/2.174) a espécie mais abundante, seguida por Lutzomyia whitmani (8,1%; 176/2.174) e Lutzomyia sordellii (1,5%; 33/2.174). A maioria dos espécimes foi coletada no peridomicílio (64,1%; 1.394/2.174) e no período chuvoso. Todas as amostras avaliadas foram negativas para Leishmania spp. A presença de Lutzomyia whitmani no intradomicílio e peridomicílio indica que a população residente nesta área está exposta ao risco de infecção por parasitos causadores de LTA.

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Ecology of Lutzomyia longipalpis in an area of visceral leishmaniasis transmission in north-eastern Brazil

Cited by 47 publications

References 30 publications

Frequency and diversity of phlebotomine sand flies (Diptera: Psychodidae) in Sinop, State of Mato Grosso, Brazil

Frequency and diversity of phlebotomine sand flies (Diptera: Psychodidae) in Sinop, State of Mato Grosso, Brazil

Sandflies (Diptera: Psychodidae) in an urban area of Northeastern Brazil

Phlebotomines in an area endemic for American cutaneous leishmaniasis in northeastern coast of Brazil

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