0.2% Ethanol and 0.2% cannabidiol has no significant effect on the heart rate of Daphnia magna

Abstract

Daphnia magna, a crustacean with a myogenic heart, has a heart that is easily visible and manipulated in order to test the effects that different solutions have on heart rate. In this study, we are studying the effect of CBD and ethanol on the heart rate of Daphnia magna. We relate a myogenic heart to action potentials in this study, which is not common when looking into theDaphnia. We proposed that the CBD solution would slow the heart rate the greatest amount. We conducted 5 trials for each solution and used a microscope and video recorder in order to accurately count heart rate in beats per minute. Although the Daphnia and human heart are different, our results may reflect useful information on how CBD and ethanol interferes with regular heart function.