Can cannabidiol (CBD) be used to counter insecticide resistance, specifically for mosquitoes? This is what a recent study published in Insects hopes to address as a team of researchers investigated how hemp leaf extract could be used to kill mosquito larvae that is responsible for yellow fever. This study holds the potential to help researchers better understand how cannabis can be used to fight insecticide resistance and mitigate yellow fever around the world.
“Mosquitoes are one of the deadliest animals in the world, mainly because as adults they serve as vectors of disease,” said Erick Martinez Rodriguez, who is a graduate student in entomology at The Ohio State University and lead author of the study. “It’s very important to be able to control these pests at an early stage, when they are at the most vulnerable.”
This study builds off a 2018 study from The Ohio State University that a Madagascar-native plant successfully worked as a mosquito insecticide. For this recent study, the researchers created CBD from ground-up hemp extract and fed this CBD to mosquito larvae with two strains of yellow fever. In the end, the researchers found both strains were effectively killed by the CBD, along with this occurring with very small amounts of CBD.
“If you compare the amount of hemp extract needed to kill 50% of the population to other synthetic conventional insecticides, it is on the high side, but when you compare it side-by-side to other natural extracts we have tested in our lab, only a relatively low amount is required to produce high mortality values in larvae,” said Martinez Rodriguez.
Going forward, the team aspires to learn the potential harmful effects of CBD on non-threatening species that could ingest the CBD while trying to kill mosquito larvae.
What new discoveries will researchers make about cannabis and mosquitoes in the coming years and decades? Only time will tell, and this is why we science!
As always, keep doing science & keep looking up!
Sources: Insects, EurekAlert!, PLOS Neglected Tropical Diseases, Ohio State News