Laboratory assessment of molluscicidal activity of crude aqueous and ethanolic extracts of Dalbergia sissoo plant parts against Biomphalaria pfeifferi

Summary Background In the continued search for molluscicidal compounds from plants, crude aqueous and ethanolic extracts from different parts of Dalbergia sissoo Roxb. 1832, were evaluated against egg masses and adults of Biomphalaria pfeifferi (Krauss, 1848), the snail intermediate host of Schistos...

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Bibliographic Details
Published in:Travel medicine and infectious disease 2008-07, Vol.6 (4), p.219-227
Main Authors: Adenusi, Adedotun A, Odaibo, Alexander B
Format: Article
Language:English
Subjects:
Animals
Bark
Biomphalaria - drug effects
Biomphalaria - growth & development
Biomphalaria - parasitology
Biomphalaria pfeifferi
Cold
Confidence intervals
Dalbergia - chemistry
Dalbergia sissoo
Developmental stages
Disease Vectors
Drinking water
Embryos
Ethanol
Fruits
Humans
Infectious Disease
Medicine
Molluscacides - chemistry
Molluscacides - pharmacology
Molluscicidal
Mollusks
Nigeria
Ovum - drug effects
Plant Components, Aerial - chemistry
Plant extracts
Plant Extracts - chemistry
Plant Extracts - pharmacology
Plants, Medicinal - chemistry
Roots
Schistosoma mansoni
Schistosomiasis mansoni - transmission
Travel medicine
Tropical diseases
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Summary:Summary Background In the continued search for molluscicidal compounds from plants, crude aqueous and ethanolic extracts from different parts of Dalbergia sissoo Roxb. 1832, were evaluated against egg masses and adults of Biomphalaria pfeifferi (Krauss, 1848), the snail intermediate host of Schistosoma mansoni (Sambon, 1907) in Nigeria. Methods Laboratory-bred adult B. pfeifferi and their viable 0–24 h old egg masses were separately exposed to five different concentrations (7.81–2000 mg l−1 ) each, of the crude aqueous and ethanolic extracts of the fruits, leaves, roots and stem bark of D. sissoo , for 24 h. The LC50 and LC90 values of each extract for the target organisms were calculated using probit analysis. Results Only the ethanolic extracts of the fruits and roots showed significant activities against the adult snails (24 h LC90 100 mg l−1 ). There were concentration-dependent behavioural changes in snails exposed to test extracts, while egg mortalities, manifested at the gastrula/exogastrula stage and or the prehatch snail stage of development, were similarly concentration-dependent. Conclusions The crude ethanolic extracts of D. sissoo fruits and roots exhibited promising molluscicidal activities (LC90 values
ISSN:1477-8939
1873-0442
DOI:10.1016/j.tmaid.2007.12.004