Ovicidal and Larvicidal Effects of Ricinus communis L. (Euphorbiaceae) Extracts on Phlebotomus duboscqi

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dc.contributor.author Ng'ang'a, Zipporah W.
dc.contributor.author Mong’are, Samuel
dc.contributor.author Ngumbi, Philip
dc.contributor.author Johnstone, Ingonga
dc.contributor.author Ngure, Peter
dc.date.accessioned 2016-04-21T13:10:51Z
dc.date.available 2016-04-21T13:10:51Z
dc.date.issued 2016
dc.identifier.citation European Journal of Medicinal Plants 11(3): 1-14, 2016 en_US
dc.identifier.issn 2231-0894
dc.identifier.uri https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjEnJSH5Z_MAhWCtBQKHaT3BFEQFggiMAA&url=http%3A%2F%2Fsciencedomain.org%2Fdownload%2FMTIxNDRAQHBm&usg=AFQjCNFY4yyyVcVS3U9m4Qx6L2r5foO0Dg&cad=rja
dc.identifier.uri http://repository.seku.ac.ke/handle/123456789/2073
dc.description DOI: 10.9734/EJMP/2016/22241 en_US
dc.description.abstract Aims: To evaluate the Ovicidal and larvicidal effects of Ricinus communis (Euphorbiaceae) extracts on Phlebotomus duboscqi. Study Design: A comparative experimental design using extracts obtained from the leaf and bark of Ricinus communis plant. Study Site: Kenya Medical Research Institute, Centre for Biotechnology Research and Development (CBRD), Nairobi Kenya from January to July, 2015. Methodology: Aqueous, methanol and ethyl acetate extracts were prepared from Ricinuscommunis plant. Freshly laid eggs were moistened with 1 ml of each extract separately during the incubation period. Larvae were also fed on larval food mixed with the powdered crude extract and a second group was fed on larval food sprinkled with 5 ml of each extract daily. Results: No significant difference when bark and leaf extracts were compared (P=0.061). 250 µg/ml and 500 µg/ml of extract eroded all the chorionic membranes of the egg shell while egg hatchability was significantly inhibited with only 7%, 9% and 26% of eggs hatching at 500 µg/ml of aqueous, methanol and ethyl acetate extracts respectively (P<0.001). 100% larval mortality noted when at 500 µg/ml methanol extract. The larval period was prolonged to 87 days with the life cycle lasting for 101 days. Conclusion: R. communis extracts have deleterious effects on hatching of eggs, larval and pupal development and adult emergence of P. duboscqi; hence R. communis should be used against sand flies and Leishmania in situ. en_US
dc.language.iso en en_US
dc.publisher SCIENCEDOMAIN International en_US
dc.subject P. duboscqi en_US
dc.subject Ricinus communis en_US
dc.subject ovicidal en_US
dc.subject larvicidal en_US
dc.subject mortality en_US
dc.subject sculpturing en_US
dc.title Ovicidal and Larvicidal Effects of Ricinus communis L. (Euphorbiaceae) Extracts on Phlebotomus duboscqi en_US
dc.type Article en_US


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