A methodological proposal to estimate the total abundance of immature mosquitoes in discarded tyres: Aedes aegypti and Culex pipiens as study cases.

Estimating the abundance of immature mosquitoes in discarded water-filled tyres is a laborious task due to their shape and size. Our objective was to develop a procedure that allows, by counting individuals in a water sample, to estimate their total abundance. Polynomial functions linking water column height and water volume were fitted for five tyre categories (from cars to tractors) and horizontal/vertical storage positions.

Citizen complaints in local media as source of mosquito data: the case of Aedes albifasciatus in an intermediate city of temperate Argentina.

Floodwater mosquitoes provoke nuisance due to their mass emergence. Citizen complaints about outstanding events of mosquitoes in urban areas are usually reflected in local media and could be potentially used as data. Our objective was to build a temperature dependent function to characterize the immature development time of the floodwater mosquito Ae.

[Observations on the dengue vaccination strategy in Argentina].

A new dengue vaccine has recently been licensed in Argentina, with the Argentine government planning to acquire it in order to develop a vaccination strategy. As the disease is gradually following a path to endemicity in some regions of the country, the incorporation of these vaccines will have the potential to tackle the growing incidence of the disease and to reduce the disease burden. However, the establishment of the vaccination programme may also be susceptible of threats related to the epidemiological shift of the disease.

[Dengue, chikungunya and the mosquito vector at the Southern limit of distribution during the 2023 epidemic, Argentina].

Objectives: To monitor the oviposition activity of the mosquito Aedes aegypti and of dengue and chikungunya cases in four localities of temperate Argentina, during the 2023 epidemic.

Methods: During the summer and autumn of 2023, the oviposition activity of the mosquito vector was monitored weekly using ovitraps, and the arrival of cases with dengue or chikungunya in Tandil, Olavarría, Bahía Blanca and Laprida were registered.

Results: Monthly variations of the percentage of positive traps were similar in the first three locations; in Laprida the mosquito was not detected.

Exploring the range of Culex mosquitoes in Western Argentinean Patagonia, unveiling the presence of Culex pipiens bioform pipiens in South America.

Culicids in Argentinean Patagonia are characterized by low species diversity and adaptation to extreme environmental conditions, yet few studies have been conducted in the region. To further assess the occurrence of Culicidae in Western Patagonia, and in particular the presence of Culex pipiens bioforms at the southernmost extent of their distribution, immature and adult specimens were collected aboveground across various land uses located in shrubland, steppe, and deciduous forest between 38.96 and 46.