scholarly journals Association of Lutzomyia longipalpis (Diptera: Psychodidae) population density with climate variables in Montes Claros, an area of American visceral leishmaniasis transmission in the state of Minas Gerais, Brazil

2009 ◽  
Vol 104 (8) ◽  
pp. 1191-1193 ◽  
Author(s):  
Érika Monteiro Michalsky ◽  
Consuelo Latorre Fortes-Dias ◽  
João Carlos França-Silva ◽  
Marilia Fonseca Rocha ◽  
Ricardo Andrade Barata ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Population Density ◽  
Minas Gerais ◽  
The State ◽  
Lutzomyia Longipalpis ◽  
Climate Variables

scholarly journals Importance of Lutzomyia longipalpis in the dynamics of transmission of canine visceral leishmaniasis in the endemic area of Porteirinha Municipality, Minas Gerais, Brazil

2005 ◽  
Vol 131 (3-4) ◽  
pp. 213-220 ◽  
Author(s):  
João C. França-Silva ◽  
Ricardo A. Barata ◽  
Roberto T. da Costa ◽  
Érika Michalsky Monteiro ◽  
George L. L. Machado-Coelho ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Endemic Area ◽  
Minas Gerais ◽  
Lutzomyia Longipalpis ◽  
Canine Visceral Leishmaniasis

scholarly journals Assessing geographic and climatic variables to predict the potential distribution of the visceral leishmaniasis vector Lutzomyia longipalpis in the state of Espírito Santo, Brazil

PLoS ONE ◽  
2020 ◽  
Vol 15 (9) ◽  
pp. e0238198
Author(s):  
Karina Bertazo Del Carro ◽  
Gustavo Rocha Leite ◽  
Amandio Gonçalves de Oliveira Filho ◽  
Claudiney Biral dos Santos ◽  
Israel de Souza Pinto ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Potential Distribution ◽  
The State ◽  
Climatic Variables ◽  
Lutzomyia Longipalpis ◽  
Espírito Santo ◽  
Espirito Santo

scholarly journals Assessment of sand fly (Diptera, Psychodidae) control using cypermethrin in an endemic area for visceral leishmaniasis, Montes Claros, Minas Gerais State, Brazil

2011 ◽  
Vol 27 (11) ◽  
pp. 2117-2123 ◽  
Author(s):  
Ricardo Andrade Barata ◽  
Erika Monteiro Michalsky ◽  
Ricardo Toshio Fujiwara ◽  
João Carlos França-Silva ◽  
Marília Fonseca Rocha ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Endemic Area ◽  
Residual Effect ◽  
Minas Gerais ◽  
Sand Fly ◽  
Lutzomyia Longipalpis ◽  
Sand Flies ◽  
Light Traps ◽  
Minas Gerais State ◽  
Transmission Area

Montes Claros in Minas Gerais State, Brazil, was considered an intense transmission area for visceral leishmaniasis. This study evaluated sand fly fauna after insecticide application. Captures were performed in 10 districts from September 2005 to August 2006 with CDC light traps inside and outside each residence. Cypermethrin was sprayed in two cycles during November/2005 and May/2006. The 636 specimens collected, belonging to 10 species, were predominantly Lutzomyia longipalpis (79%), and most frequently males (70%). The highest percentage of specimens were captured in areas surrounding domiciles (85.8%). The main species were observed to be sensitive to treatment with the insecticide. The results showed a reduction in the number of sand flies collected after use of cypermethrin in homes and annexes, and with residual effect lasting from two to four months.

scholarly journals SURVEY OF SANDFLY FAUNA (DIPTERA: PSYCHODIDAE) IN UBERLÂNDIA, MINAS GERAIS STATE, BRAZIL, 2003-2004

2013 ◽  
Vol 55 (2) ◽  
pp. 85-89 ◽  
Author(s):  
Márcia Beatriz Cardoso de Paula ◽  
Amaral Alves de Souza ◽  
Alessandro Ambrósio dos Reis ◽  
Jean Ezequiel Limongi ◽  
Adalberto de Albuquerque Pajuaba Neto ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Abundant Species ◽  
Domestic Animal ◽  
Minas Gerais ◽  
Lutzomyia Longipalpis ◽  
Animal Shelters ◽  
Minas Gerais State

We analyzed the sandflies around houses and domestic animal shelters located in residences close to forests in localities on the banks of the Araguari River, Uberlândia, MG, from February 2003 to November 2004. The phlebotomines were captured in the peridomiciliary area, where Shannon traps were utilized in the peridomicile and CDC traps in animal shelters. 2,783 specimens of sandflies were captured, 2,140 females (76.9%) and 643 males (23.1%), distributed between 17 species. The most abundant species was Nyssomyia neivai (88.1%), followed by Nyssomyia whitmani (3.1%). The presence of Lutzomyia longipalpis was also confirmed, it is the main vector of Leishmania (L.) infantum chagasi which causes visceral leishmaniasis. The presence of species involved in the transmission of leishmaniases in the municipality of Uberlândia is cause for concern. The presence of L. longipalpis indicates that its urbanization may not have been aleatory and instead occurred through the destruction of wild ecotopes. More studies of their occupation in anthropic environments need to be made.

scholarly journals Occurrence of Lutzomyia longipalpis andhuman and canine cases of visceral leishmaniasis and evaluation of their expansion in the Northwest region of the State of São Paulo, Brazil

2016 ◽  
Vol 49 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Agda Maria Oliveira ◽  
Marluci Monteiro Guirado ◽  
Margareth Regina Dibo ◽  
Lilian Aparecida Colebrusco Rodas ◽  
Monica Regina Bocchi ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Sao Paulo ◽  
The State ◽  
Lutzomyia Longipalpis ◽  
São Paulo ◽  
Northwest Region

scholarly journals Monitoring of Lutzomyia longipalpis Lutz & Neiva, 1912 in an area of intense transmission of visceral leishmaniasis in Rio Grande do Norte, Northeast Brazil

2010 ◽  
Vol 19 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Sthenia Santos Albano Amóra ◽  
Claudia Maria Leal Bevilaqua ◽  
Edmilson de Castro Dias ◽  
Francisco Marlon Carneiro Feijó ◽  
Paula Gabriela Melo de Oliveira ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Population Density ◽  
Disease Transmission ◽  
Rainy Season ◽  
Rio Grande ◽  
Control Measures ◽  
Northeastern Brazil ◽  
Lutzomyia Longipalpis ◽  
Chi Square ◽  
Chi Square Test

Urban increase of visceral leishmaniasis (VL) in Brazil is associated with the adaptation of its vector, Lutzomyia longipalpis, to environments modified by humans. The present study reports the results of an entomological monitoring of L. longipalpis and the effect of environmental variables on its population density. Sandflies were captured in the municipality of Mossoró, State of Rio Grande do Norte, Northeastern Brazil, from January 2005 to December 2006. Two CDC light traps were placed monthly for four consecutive nights in the peridomicile of selected households. Data analysis was based on the chi-square test and linear regression. A total of 2,087 sandflies were captured, 99.86% of which were L. longipalpis. A higher proportion of females were captured (p < 0.05). Monthly analysis of the variables temperature, relative humidity and rainfall did not show a significant influence on population density. However, there were seasonal differences: approximately 70% of sand flies were captured during the rainy season (p < 0.05). The predominant species, L. longipalpis, is present in substantial number, representing a public health risk. Therefore, because of higher prevalence during the rainy season, we recommend intensified VL control measures before and during this season to reduce the risk of disease transmission.

scholarly journals American visceral leishmaniasis dissociated from Lutzomyia longipalpis (Diptera, Psychodidae) in the State of Espírito Santo, Brazil

2010 ◽  
Vol 26 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Israel de Souza Pinto ◽  
Claudiney Biral dos Santos ◽  
Gabriel Grimaldi Jr. ◽  
Adelson Luiz Ferreira ◽  
Aloísio Falqueto
Keyword(s):  
Visceral Leishmaniasis ◽  
Geographic Distribution ◽  
The State ◽  
Lutzomyia Longipalpis ◽  
Sand Flies ◽  
Espírito Santo ◽  
Rocky Outcrops ◽  
Espirito Santo ◽  
Steep Slopes

The occurrence of American visceral leishmaniasis in the State of Espírito Santo, Brazil has always been associated with the presence of the Lutzomyia longipalpis vector. The geographic distribution of this vector in this state is related to the presence of specific geoclimatic characteristics, such as a dry climate, low elevations (< 450m), steep slopes and rocky outcrops. The occurrence of human autochthonous cases of American visceral leishmaniasis in municipalities without these geoclimatic characteristics justifies the present study and our main goal was to test the association between the occurrence of American visceral leishmaniasis and the presence of the Lu. longipalpis. Sand flies were captured monthly from July 2006 to August 2007 using Shannon and CDC traps in two municipalities with records of autochthonous American visceral leishmaniasis and one with no record. We captured 13,112 sand flies, but no Lu. longipalpis was found. The absence of Lu. longipalpis and the possible role of another American visceral leishmaniasis vector in these localities were discussed.

scholarly journals Detection of multiple circulating Leishmania species in Lutzomyia longipalpis in the city of Governador Valadares, southeastern Brazil

2018 ◽  
Author(s):  
Mariana Santos Cardoso ◽  
Gabrielle Ariadine Bento ◽  
Laila Viana de Almeida ◽  
Joseane Camilla de Castro ◽  
João Luís Reis Cunha ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Infection Rate ◽  
Control Strategies ◽  
Minas Gerais ◽  
Domestic Dogs ◽  
Effective Control ◽  
Lutzomyia Longipalpis ◽  
Insect Vector ◽  
Sand Flies ◽  
The City

AbstractBackgroundLeishmaniasis encompasses a group of diverse clinical diseases caused by protozoan parasites of the Leishmania genus. This disease is a major public health problem in the New World affecting people exposed in endemic regions. The city of Governador Valadares (Minas Gerais/Brazil) is a re-emerging area for visceral leishmaniasis, with 191 human cases reported from 2008 to 2017 and a lethality rate of 14.7%. The transmission of the parasite occurs intensely in this region with up to 22% of domestic dogs with positive serology for the visceral form. Lu. longipalpis is one of the most abundant sand fly species in this area. Despite this scenario, so far there is no information regarding the circulating Leishmania species in the insect vector Lutzomyia longipalpis in this focus.Methodology/Principal FindingsWe collected 616 female Lutzomyia longipalpis sand flies between January and September 2015 in the Vila Parque Ibituruna neighborhood (Governador Valadares/MG), which is located on a transitional area between the sylvatic and urban environments with residences built near a preserved area. After DNA extraction of individual sand flies, the natural Leishmania infections in Lu. longipalpis were detected by end-point PCR, using primers derived from kDNA sequences, specific for L. (Leishmania) or L. (Viannia) subgenus. The sensitivity of these PCR reactions was 0.1 pg of DNA for each Leishmania subgenus and the total infection rate of 16.2% (100 positive specimens). Species-specific PCR detected the presence of multiple Leishmania species in infected Lu. longipalpis specimens in Governador Valadares, including L. amazonensis (n=3), L. infantum (n=28), L. (Viannia) spp. (n=20), coinfections with L. infantum and L. (Viannia) spp. (n=5), and L. (Leishmania) spp (n=44).ConclusionsOur results demonstrate that multiple Leishmania species circulate in Lu. longipalpis in Governador Valadares and reveal a potential increasing risk of transmission of the different circulating parasite species. This information is a key factor for planning surveillance and effective control strategies against leishmaniasis in this endemic focus.Author summaryLeishmaniasis is a neglected tropical disease transmitted to mammals by the bite of sand flies infected with parasites of the Leishmania genus. This disease affects millions of people in various regions of the world, including Brazil. The municipality of Governador Valadares (Minas Gerais/Brazil) is a re-emergent focus of intense transmission of leishmaniasis, with a high number of human cases and a high prevalence of infected domestic dogs. To develop better leishmaniasis control strategies for the region, we performed a surveillance study of Lu. longipalpis, the main vector of visceral leishmaniasis in Brazil, and identified circulating species of Leishmania in this insect vector. We estimate that the natural infection rate of Lu. longipalpis for these parasites was of 16.2% in the study area. We also detected the presence of multiple circulating Leishmania species (L. amazonensis, L. infantum and Viannia subgenus) in Lu. longipalpis in Governador Valadares city, including 5 sand flies coinfected with L. infantum and L. (Viannia). Thus, our results reinforce the need for a rigid and systematic control of the sand flies monitoring in this area, due to the potential risk of transmission of different species of the Leishmania parasites.

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