Evaluation of Eucalyptus globulus (Blue gum), azadirachta indica (Neem) and phytolacca dodecandra (Endod) extracts as molluscicidal agents against the planorbid snail biomphalaria pfeifferi
Abstract
The present study was carried out to evaluate the molluscicidal activities of crude aqueous and
methanol extracts of Eucalyptus globulus, Azadirachta indica and Phytolacca dodecandra
against Biomphalaria pfeifferi, the intermediate host of Schistosoma mansoni. Standard protocols
established by the WHO were used in the bioassays. Molluscicidal activity was determined by
exposing twenty adult snails to different concentrations of each extract. P. dodecandra was
assessed for its ovicidal activity, having exhibited the highest molluscicidal activity. Eight egg
masses were exposed to each concentration. Probit analysis was used to determine the LCso and
LC90 values after 24 hours of exposure. An independent sample t-test was carried out to
determine the difference in potency between extracts of each plant.
Citation
M.Sc (Applied Parasitology)Sponsorhip
University of NairobiPublisher
Faculty of Science, University of Nairobi
Description
Master of Science Thesis