Full Length Research Paper
Abstract
The molluscicidal effect of the ethanolic extract of the plant Hyptis suaveolens was evaluated against different stages: eggs, juveniles and adults of the freshwater snailBulinus globosus. Ten healthy one week old juveniles were exposed to different concentrations of the extract for 3 h, while three to four weeks old snails and the adults were exposed for 24 h. The egg masses were exposed for seven days. The mortality rates varied with concentrations and time of exposure. The LC50 values for the eggs, of one week old juveniles, three to four week old immature snails and the adult snails were 0.614, 0.196, 0.161 and 0.077 ppm, respectively. The corresponding LC90 values were 0.796, 0.353, 0.274 and 0.467 ppm, respectively. The results showed that the egg stage of B. globosus was the most resistant to the ethanolic extract of H. suaveolens.
Key words: Hyptis suaveolens, Bulinus globosus, mortality rate, LC50 and LC90.
Copyright © 2024 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0