PacVec has released a video providing an overview of resistance testing for larval mosquitoes. The video discusses the rationale for monitoring resistance in mosquitoes, an overview of dose responses and how the dose response changes as resistance to larvicides evolves in a mosquito population, the different types of larval mosquito control agents, the supplies needed for carrying out bioassays, bioassay set-up and making stock solutions of control agents, and interpreting the bioassay results.

Click here for supplementary materials such as:

  • Hard copies of the tables in the video
  • Figures in the video
  • Summative assessments of some of the content
  • Examples of a datasheet and probit paper
  • Additional information


Focuses on testing for resistance in larval mosquitoes to bacterial larvicides, spinosad, and s-methoprene. Click on the items below to watch the videos:

Methoprene Test and Results

Sphaericus Test and Results

Spinosad Testing and Results

BTI Testing and Results