Arbovirus impact on mosquito behavior: the juryis still out

Trends in Parasitology

Théo Maire, Louis Lambrechts, and Felix J.H. Hol

Parasites can manipulate host behavior to enhance transmission, but our understanding

of arbovirus-induced changes in mosquito behavior is limited. Here, we

explore current knowledge on such behavioral alterations in mosquito vectors,

focusing on host-seeking and blood-feeding behaviors. Reviewing studies

on dengue, Zika, La Crosse, Sindbis, and West Nile viruses in Aedes or Culex

mosquitoes reveals subtle yet potentially significant effects. However, assay

heterogeneity and limited sample sizes challenge definitive conclusions. To

enhance robustness, we propose using deep-learning tools for automated behavior

quantification and stress the need for standardized assays. Additionally,

conducting longitudinal studies across the extrinsic incubation period and

integrating diverse traits into modeling frameworks are crucial for understanding

the nuanced implications of arbovirus-induced behavioral changes for virus transmission

dynamics.

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