Results: 7

The transmission of visceral leishmaniasis in the municipality of Guarujá, on the Coast of São Paulo state, Brazil

ABSTRACT OBJECTIVE To perform an entomological survey, evaluating the circulation of Leishmania spp. in sand flies captured from the new foci of visceral leishmaniasis (VL) in the coastal region of São Paulo state. METHODS Sand flies were captured from November 2016 to September 2018 using light tra...

The gene expression of Leishmania infantum chagasi inside Lutzomyia longipalpis, the main vector of visceral leishmaniasis in Brazil

Mem. Inst. Oswaldo Cruz; 116 (), 2021
Leishmania infantum chagasi is the causative agent and Lutzomyia longipalpis is the main vector of visceral leishmaniasis in the Americas. We investigated the expression of Leishmania genes within L. longipalpis after artificial infection. mRNAs from genes involved in sugar and amino acid metabolism were...

Phylogenetic relationships of closely-related phlebotomine sand flies (Diptera: Psychodidae) of Nyssomyia genus and Lutzomyia subgenus

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND The Nyssomyia genus and Lutzomyia subgenus include medical important species that are Latin American leishmaniases vectors. Little is known about the phylogenetic relationships of closely-related species in each of these taxonomic groups that are morphologically indistinguishable or different...

Lutzomyia longipalpis (Diptera: Psychodidae) Argentina-Bolivia border: new report and genetic diversity

Mem. Inst. Oswaldo Cruz; 114 (), 2019
American visceral leishmaniasis (AVL) has two main scenarios of transmission as follows: scattered cases in rural areas and urban outbreaks. Urban AVL is in active dispersion from the northeastern border of Argentina-Paraguay-Brazil to the South. The presence of Lutzomyia longipalpis was initially report...

Molecular validation of anthropophilic Phlebotominae sandflies (Diptera: Psychodidae) in Central Panama

Mem. Inst. Oswaldo Cruz; 114 (), 2019
Six Phlebotominae sand fly species are incriminated as biological vectors of human pathogens in Panama, but molecular corroboration is still needed. We aim at confirming the identity of Phlebotominae species documented as anthropophilic in Panama. Adult sandflies were collected from August 2010 to Februa...

Especies de flebotomíneos (Diptera: Psychodidae) recolectados en reservas naturales de las regiones del Darién y del Pacífico en Colombia

Biomédica (Bogotá); 37 (supl.2), 2017
Resumen Introducción. Los departamentos de Chocó y Antioquia en Colombia presentan condiciones climáticas y de vegetación que favorecen el establecimiento de especies de vectores del género Lutzomyia y la transmisión de Leishmania spp. a poblaciones humanas que ingresan a ambientes selváticos co...

Biología reproductiva bajo condiciones experimentales y variabilidad genética de Lutzomyia shannoni (Dyar) (Diptera: Psychodidae)

Se estudiaron aspectos básicos del desarrollo biológico de Lutzomyia shannoni (Dyar) en dos condiciones experimentales, cajas de poliestireno e incubadora. El tiempo de desarrollo desde el estadio de huevo hasta adulto fue de 67 y 52 días respectivamente. Con base en cohortes de 100 hembras en cada ex...