11 documents found, page 1 of 2

Molecular taxonomy of the two Leishmania vectors Lutzomyia umbratilis and Lutzo...

Background: Lutzomyia umbratilis (a probable species complex) is the main vector of Leishmania guyanensis in the northern region of Brazil. Lutzomyia anduzei has been implicated as a secondary vector of this parasite. These species are closely related and exhibit high morphological similarity in the adult stage; therefore, they have been wrongly identified, both in the past and in the present. This shows the ne...

Fauna de flebotomíneos (Diptera: Psycodidae) de uma reserva de campina no Estad...

First record of anopheles konderi galvão & damasceno (Diptera: Culicidae) carry...

Introduction: The muscoid fly Dermatobia hominis causes cutaneous myiases in mammals. Females of this species use a vector to carry their eggs to the host. This note describes Anopheles konderi acting as phoretic vector for D. hominis. Methods: A female A. konderi carrying D. hominis was collected using light traps in Oriximiná, Pará, Brazil. The A. konderi specimen was identified at morphological and molecular...

16S rRNA gene-based identification of microbiota associated with the parthenoge...

Bacteria associated with the parthenogenetic troglobiont sand fly Deanemyia maruaga were characterized by sequencing cloned 16S rDNA PCR products. Eleven novel partial 16S rDNA sequences, with varying degrees of similarity to Actinobacteria, were identified. None of the sequences identified had homology to those known from parthenogenesis-inducing bacteria. © 2013, Sociedade Brasileira de Microbiologia.

An insight into the sialotranscriptome and virome of Amazonian anophelines

Background: Saliva of mosquitoes contains anti-platelet, anti-clotting, vasodilatory, anti-complement and anti-inflammatory substances that help the blood feeding process. The salivary polypeptides are at a fast pace of evolution possibly due to their relative lack of structural constraint and possibly also by positive selection on their genes leading to evasion of host immune pressure. Results: In this study, ...

A new species of phlebotomine sandfly, Pintomyia (Pifanomyia) duckei (Diptera: ...

Pintomyia (Pifanomyia) duckei Oliveira, Alencar e Freitas sp. n. da Reserva Florestal Adolpho Ducke, Manaus, Estado do Amazona, Brasil, é descrita e ilustrada com base em três espécimes machos, o holótipo e dois parátipos. Os parátipos possuem anomalias na genitália externa, sendo um com anomalia bilateral assimétrica (anomalias diferentes em cada uma das estruturas pareadas) e outro com anomalia unilateral (an...

Emergência de flebotomíneos (Diptera: Psychodidae) em chão de floresta de terra...

Informações acerca de potenciais criadouros naturais de flebotomíneos sempre foram de fundamental interesse epidemiológico. Contudo, são poucas as informações advindas dos diversos estudos realizados até o momento. Isto se deve principalmente às dificuldades de localização e extração dos imaturos que se desenvolvem no solo e matéria orgânica do chão de florestas. No presente estudo o modelo modificado de armadi...

The genital atrium armature of some Brazilian sand fly females (Diptera: Phlebo...

Os flebotomíneos são insetos de importância médica. Na região Neotropical existe grande diversidade de espécies. Algumas dessas espécies são consideradas espécies crípticas devido às semelhanças morfológicas entre fêmeas adultas de diferentes espécies, tornando a identificação especialmente difícil. O objetivo deste estudo foi analisar e descrever a armadura no átrio genital (AAG) de algumas fêmeas adultas de f...

Lutzomyia umbratilis, the main vector of leishmania guyanesis, represents a nov...

Background: Lutzomyia umbratilis is an important Leishmania guyanensis vector in South America. Previous studies have suggested differences in the vector competence between L. umbratilis populations situated on opposite banks of the Amazonas and Negro Rivers in the central Amazonian Brazil region, likely indicating a species complex. However, few studies have been performed on these populations and the taxonomi...

Breeding sites of phlebotomine sand flies (Diptera: Psychodidae) and efficiency...

Information on natural breeding sites of phlebotomine sand flies is scanty, due to the difficulties of isolation of immatures from the soil where they occur. The present study investigated breeding sites in several microhabitats in a " terra-firme" forest in Pitinga, Amazonas State, Brazil. Results on the efficacy of different extraction techniques used for isolating sand flies, and the temperature and the pH o...