Title: Toxic cyanobacterial blooms as a threat to pollination in a changing climate

Duration: 2023 - 2028



  • To assess how the direct exposure to toxic cyanobacteria affects bee health.
  • To evaluate how exposure to toxic cyanobacteria via water foraging affects bee health and pollination efficiency under different climatic conditions.
  • To investigate how toxic cyanobacterial bloom events affect bee health and pollination efficiency in real-world landscapes.

General activities

  • Develop exposure assays, toxicokinetic analyses.
  • Foraging experiments under heat stress and Semi-field climate experiment.
  • Landscape pollination study.

Expected results

  • To know how and, at which environmentally relevant concentrations found in nature, bees are vulnerable to cyanotoxins when either ingested orally or through topical contact with them.
  • Defining cyanotoxin risk levels to bee health for later studies with increasing environmental complexity.
  • To decipher the fate and bioaccumulation of the toxins in each of the three bee species tested.
  • Bioaccumulation potential of the different toxins will enable to optimize procedures to track toxin exposure in later semi-field and field studies
  • Critical insights for how temperature fluctuations due to daily and seasonal changes in weather conditions  affect cyanotoxin exposure
  • The potential threat that toxic cyanobacterial blooms represent for bees and their pollination efficiency under natural conditions


Grant 2022-T1/AMB-24063 funded by: