Publications by authors named "Teresa Fernandes Silva-DO-Nascimento"

Female mosquitoes of the genus Sabethes Robineau-Desvoidy, 1827 are implicated in the transmission of several arboviruses, including yellow fever virus. Here, we present an illustrated species identification key for females of the genus Sabethes recorded in Brazil, except Sa. nitidus Theobald, 1901 and Sa.

View Article and Find Full Text PDF
Article Synopsis
  • Haiti faces a significant malaria issue, primarily caused by Plasmodium falciparum, with Anopheles albimanus mosquitoes as the main carriers.
  • Between 2009 and 2018, a total of 232,479 malaria cases were reported, showing a peak in 2010 followed by a sharp decline due to interventions, from 60,130 cases in 2010 to 8,978 by 2018.
  • The study underscores the need for improved data collection and epidemiological monitoring to better understand malaria's impact in Haiti, which affects both urban and rural areas.
View Article and Find Full Text PDF

Background: Malaria control requires local action. Assessing the vector diversity and abundance provides information on the local malariogenic potential or risk of transmission. This study aimed to determine the Anopheles species composition, habitats, seasonal occurrence, and distribution in areas with autochthonous and imported malaria cases in Roraima State.

View Article and Find Full Text PDF

Identifying the species of the subfamily Anophelinae that are vectors is important to vector and malaria control. Despite the increase in cases, vector mosquitoes remain poorly known in Brazilian indigenous communities. This study explores Anophelinae mosquito diversity in the following areas: (1) a Yanomami reserve in the northwestern Amazon Brazil biome and (2) the Pantanal biome in southwestern Brazil.

View Article and Find Full Text PDF

Unforeseen Plasmodium infections in the Atlantic Forest of Brazilian Extra-Amazonian region could jeopardise malaria elimination. A human malaria case was registered in Três Forquilhas, in the Atlantic Forest biome of Rio Grande do Sul, after a 45 years' time-lapsed without any malaria autochthonous notification in this southern Brazilian state. This finding represents the expansion of the malaria distribution areas in Brazil and the southernmost human malaria case record in South America in this decade.

View Article and Find Full Text PDF

Background: Aedes albopictus is a very invasive mosquito, which has recently colonized tropical and temperate regions worldwide. Of concern is its role in the spread of emerging or re-emerging mosquito-borne diseases. Ae.

View Article and Find Full Text PDF

Background: Anopheles (Kerteszia) cruzii is the primary vector of human and simian malarias in Brazilian regions covered by the Atlantic Rainforest. Previous studies found that An. cruzii presents high levels of behavioural, chromosomal and molecular polymorphisms, which led to the hypothesis that it may be a complex of cryptic species.

View Article and Find Full Text PDF
Article Synopsis
  • Studies conducted in Central Brazil's Pantanal biome aimed to update records on malaria-carrying mosquitoes and assess the area's vulnerability to malaria transmission.
  • Over the course of a year, researchers collected nearly 25,000 anopheline mosquitoes, finding that the primary malaria vector, Anopheles darlingi, was significantly present, especially near the river during specific seasonal transitions.
  • The study concluded that due to the influx of workers and tourists from malaria-endemic regions, ongoing surveillance and control measures are essential to prevent malaria from returning to the Pantanal area.
View Article and Find Full Text PDF

Background: Many indigenous villages in the Amazon basin still suffer from a high malaria burden. Despite this health situation, there are few studies on the bionomics of anopheline larvae in such areas. This publication aims to identify the main larval habitats of the most abundant anopheline species and to assess their associations with some environmental factors.

View Article and Find Full Text PDF

Here we present the first in a series of articles about the ecology of immature stages of anophelines in the Brazilian Yanomami area. We propose a new larval habitat classification and a new larval sampling methodology. We also report some preliminary results illustrating the applicability of the methodology based on data collected in the Brazilian Amazon rainforest in a longitudinal study of two remote Yanomami communities, Parafuri and Toototobi.

View Article and Find Full Text PDF

Background: The molecular phylogenetic relationships and population structure of the species of the Anopheles triannulatus complex: Anopheles triannulatus s.s., Anopheles halophylus and the putative species Anopheles triannulatus C were investigated.

View Article and Find Full Text PDF

Immatures of both Aedes aegypti and Aedes albopictus have been found in water-holding bromeliad axils in Brazil. Removal of these plants or their treatment with insecticides in public and private gardens have been undertaken during dengue outbreaks in Brazil despite uncertainty as to their importance as productive habitats for dengue vectors. From March 2005-February 2006, we sampled 120 randomly selected bromeliads belonging to 10 species in a public garden less than 200 m from houses in a dengue-endemic neighborhood in Rio de Janeiro.

View Article and Find Full Text PDF
Article Synopsis
  • The Triannulatus Complex comprises three closely related species of Anopheles mosquitoes, which adapt to different larval habitats despite being sympatric.
  • The study hypothesizes that rainfall and seasonal flooding significantly affect the availability of these habitats, impacting the population dynamics of the species throughout the year.
  • Observations show that An. triannulatus s.s. peaks in abundance post-rainy season, while An. halophylus and An. triannulatus C thrive during the dry season, indicating distinct ecological niches and spatial segregation among the species.
View Article and Find Full Text PDF