Toxic Effects of Capsaicin on Invasive Species Pomacea canaliculata

The effects of capsaicin with different concentration on the eggs, larvae(shell height10mm) and adult(30mmshell height40mm) of Pomacea canaliculata were studied. The results showed that capsaicin had no significant toxic effect on the eggs of Pomacea canaliculata, but had significant toxic effect on the larvae and adult of Pomacea canaliculata(FF0.01). As the concentration increased,the mortality rate of larvae and adult improved obviously. The median lethal concentration(LC50)in 24 hours of capsaicin were 3.17×10-3mg / L and 4.44×10-3mg / L, respectively. It is indicated that capsaicin could be used to kill Pomacea canaliculata. Because of the lack of relevant experimental data about the effect of capsaicin on native aquatic animals nowadays, it should be careful to use capsaicin to kill Pomacea canaliculata.