The study evaluated the molluscicidal effects of ethanolic leaf extracts of two Nigerian indigenous
medicinal plants; Terminalia catappa and Carica papaya. Different concentrations 2500, 630, 160, 40 and
10 ppm were prepared from the stock solution of the extracts. Adult Biomphalaria pfeifferi and Bulinus
globosus were exposed to these different graded concentrations. Mortalities were observed at intervals
of time. There were strong positive correlations between mortalities observed in snails and extracts’
concentrations; R2 = 0.997 and 0.952 in T. catappa exposed B. pfeifferi and B. globosus respectively
and R2 = 0.925and 0.937 in C. papaya exposed B. pfeifferi and B. globosus respectively. The lethal
concentration (LC50) values for B. pfeifferi and B. globosus were (864.1, 1095.7 ppm) and (2716.3, 619.1
ppm) for T. catappa and C. papaya ethanol extracts respectively. The corresponding LC90 values were
(1222.8, 1874.9 ppm) and (4515.9, 1180.7 ppm) for T. catappa and C. papaya ethanol extracts
respectively. The results from the lethal concentration values showed that B. pfeifferi is more
susceptible to T. catappa while B. globosus is more susceptible to C. papaya ethanolic leaf extracts.
Oyeyemi, O. (2018). Efficacy of ethanolic leaf extracts of Carica papaya and Terminalia catappa as molluscicides against the snail intermediate hosts of schistosomiasis. Afribary. Retrieved from https://afribary.com/works/efficacy-of-ethanolic-leaf-extracts-of-carica-papaya-and-terminalia-catappa-as-molluscicides-against-the-snail-intermediate-hosts-of-schistosomiasis
Oyeyemi, Oyetunde "Efficacy of ethanolic leaf extracts of Carica papaya and Terminalia catappa as molluscicides against the snail intermediate hosts of schistosomiasis" Afribary. Afribary, 24 Oct. 2018, https://afribary.com/works/efficacy-of-ethanolic-leaf-extracts-of-carica-papaya-and-terminalia-catappa-as-molluscicides-against-the-snail-intermediate-hosts-of-schistosomiasis. Accessed 02 Nov. 2024.
Oyeyemi, Oyetunde . "Efficacy of ethanolic leaf extracts of Carica papaya and Terminalia catappa as molluscicides against the snail intermediate hosts of schistosomiasis". Afribary, Afribary, 24 Oct. 2018. Web. 02 Nov. 2024. < https://afribary.com/works/efficacy-of-ethanolic-leaf-extracts-of-carica-papaya-and-terminalia-catappa-as-molluscicides-against-the-snail-intermediate-hosts-of-schistosomiasis >.
Oyeyemi, Oyetunde . "Efficacy of ethanolic leaf extracts of Carica papaya and Terminalia catappa as molluscicides against the snail intermediate hosts of schistosomiasis" Afribary (2018). Accessed November 02, 2024. https://afribary.com/works/efficacy-of-ethanolic-leaf-extracts-of-carica-papaya-and-terminalia-catappa-as-molluscicides-against-the-snail-intermediate-hosts-of-schistosomiasis