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Dengue Virus Serotype 1 Effects on Mosquito Survival Differ among Geographically Distinct Aedes aegypti Populations.

Milan S G KeirsebelikMariana Rocha DavidMárcio Galvão PavanDinair Couto-LimaMiriam PalominoRafi Ur RahmanAry Anthony HoffmannAna C BahiaGuy CaljonRafael Maciel-de-Freitas
Published in: Insects (2024)
The mosquito Aedes aegypti is distributed worldwide and is recognized as the primary vector for dengue in numerous countries. To investigate whether the fitness cost of a single DENV-1 isolate varies among populations, we selected four Ae. aegypti populations from distinct localities: Australia (AUS), Brazil (BRA), Pakistan (PAK), and Peru (PER). Utilizing simple methodologies, we concurrently assessed survival rates and fecundity. Overall, DENV-1 infection led to a significant decrease in mosquito survival rates, with the exception of the PER population. Furthermore, infected Ae. aegypti from PAK, the population with the lowest infection rate among those tested, exhibited a noteworthy reduction in egg laying. These findings collectively suggest that local mosquito-virus adaptations may influence dengue transmission in endemic settings.
Keyphrases
  • dengue virus
  • aedes aegypti
  • zika virus
  • free survival
  • genetic diversity
  • physical activity
  • body composition
  • escherichia coli