Results: 142

Bases genéticas e regulatórias da variação no perfil de atividade de voo associada à reprodução em machos de Aedes aegypti

O estudo de características comportamentais e fisiológicas em mosquitos tem sido feito principalmente em fêmeas, já que os machos não são hematófagos e por isso não são vetores de parasitas que causam doenças na população humana. No entanto, o estudo do comportamento reprodutivo de machos é ...

Estudo da ecologia das populações de espécies de Haemagogus (Diptera: Culicidae), na Área de Proteção Ambiental do Sana, Macaé, estado do Rio de Janeiro

O presente trabalho teve como objetivo analisar os padrões sazonais de distribuição e abundância relativa de Haemagogus leucocelaenus Dyar & Shannon, 1924 em um fragmento de Mata Atlântica do Estado do Rio de Janeiro, no qual ocorre atualmente a circulação do vírus da Febre Amarela (FA). As amost...

Ecological relationships of Haemagogus spegazzinii (Diptera: Culicidae) in a semiarid area of Brazil

Abstract INTRODUCTION: Haemagogus are mosquitoes with diurnal habits that live preferentially in forest areas. In Brazil, they are considered the primary vectors of wild yellow fever. METHODS: The ecological relationships between Haemagogus spegazzinii, the environment, and some of its activities in th...

Seasonal population dynamics of the primary yellow fever vector Haemagogus leucocelaenus (Dyar & Shannon) (Diptera: Culicidae) is mainly influenced by temperature in the Atlantic Forest, southeast Brazil

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND Southeast Brazil has recently experienced a Yellow Fever virus (YFV) outbreak where the mosquito Haemagogus leucocelaenus was a primary vector. Climatic factors influence the abundance of mosquito vectors and arbovirus transmission. OBJECTIVES We aimed at describing the population dynamics ...

The austral-most record of the genus Haemagogus Williston (Diptera: Culicidae)

Abstract INTRODUCTION: The genus Haemagogus Williston is restricted to Central America and North and middle of South America and it includes numerous species of yellow fever virus vectors. METHODS: Adult female and larvae mosquitoes were collected using hand aspirators and dipper and pipette, respecti...

Detection of the Asian II genotype of dengue virus serotype 2 in humans and mosquitoes in Brazil

Abstract INTRODUCTION: DENV-2 is the cause of most dengue epidemics worldwide and is associated with severe cases. METHODS: We investigated arboviruses in 164 serum samples collected from patients presenting with clinical symptoms of dengue fever and 152 mosquito pools. RESULTS: We detected the Asi...

Larvicidal activity of Caesalpinia ferrea Mart. and Lippia origanoides Cham. Against Aedes aegypti (LINNAEUS, 1762) (Diptera: Culicidae)

Rev. patol. trop; 49 (1), 2020
The control of Aedes aegypti has been considered one of the most important public health challenges worldwide. Chemical compounds have long been used for this purpose, but resistance to these molecules has also increased. Therefore, over the last few years several studies have focused on the development ...

Chemical composition and larvicidal activity of essential oils from Zingiber montanum (J. Koenig) Link ex. A. Dietr. against three mosquito vectors

The chemical composition and larvicidal activity of essential oils derived from the leaves and rhizomes of Zingiber montanum (J. Koenig) Link ex. A. Dietr. were reported. The main compounds in the leaf oil were β-pinene (13.8%), β-phellandrene (11.3%) and α-pinene (7.3%) while the rhizome oil was domi...

West Nile virus in Ecuador

Rev. MVZ Córdoba; 24 (1), 2019
ABSTRACT Several studies have been carried out to determine the presence and circulation of West Nile Virus (WNV) in several species that interact in important ecosystems of Ecuador, such as the Galapagos Islands, where presence and surveillance studies of WNV have been carried out in wild and migratory ...

Análise do DNA BARCODE em mosquitos (Diptera: Culicidae) neotropicais em parques da cidade de São Paulo e correlação com a paisagem

Mosquitos são insetos dípteros, pertencentes à Família Culicidae. São encontrados em quase todas as regiões do mundo, com exceção daquelas permanentemente congeladas. A família Culicidae apresenta duas subfamílias, Anophelinae e Culicinae as quais existem principalmente na região Neotropical (...