Larvicidal and repellent potential of Moringa oleifera against malarial vector,Anopheles stephensi Liston(Insecta:Diptera:Culicidae)

Objective:To evaluate the larvicidal and pupicidal potential of the methanolic extracts from Moringa oleifera（M.oleifera） plant seeds against malarial vector Anopheles stephensi（A.stephensi） mosquitoes at different concentrations（20,40,60,80 and 100 ppm）.Methods:M.oleifera was collected from the are...

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Bibliographic Details
Published in:Asian Pacific journal of tropical biomedicine 2011-04, Vol.1 (2), p.124-129
Main Authors: Prabhu, K, Murugan, K, Nareshkumar, A, Ramasubramanian, N, Bragadeeswaran, S
Format: Article
Language:English
Subjects:
activity
Amara
Animals
Anopheles
Anopheles - drug effects
Anopheles - growth & development
Anopheles stephensi
control
Culicidae
Diptera
extract
Humans
Insect Repellents - pharmacology
Insect Vectors - drug effects
Insecta
Insecticide
Larva - drug effects
Larva - growth & development
Larvicidal
Larvicidal activity
Larvicide
Malaria
Malaria - prevention & control
Malaria - transmission
Moringa
Moringa oleifera
Moringa oleifera - chemistry
Mosquito
Mosquito Control - methods
Mosquito vector control
oleifera
Original
Phytochemical
Plant
Plant extract
Plant Extracts - pharmacology
Pupa - drug effects
Pupa - growth & development
Pupicide
stephensi
vector
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Summary:Objective:To evaluate the larvicidal and pupicidal potential of the methanolic extracts from Moringa oleifera（M.oleifera） plant seeds against malarial vector Anopheles stephensi（A.stephensi） mosquitoes at different concentrations（20,40,60,80 and 100 ppm）.Methods:M.oleifera was collected from the area of around Bharathiar University,Coimbatore.The dried plant materials were powdered by an electrical blender.From each sample,100 g of the plant material were extracted with 300 mL of methanol for 8 h in a Soxhlet apparatus.The extracts were evaporated to dryness in rotary vacuum evaporator to yield 122 mg and 110 mg of dark greenish material（residue） from Arcang amara and Ocimum basilicum,respectively.One gram of the each plant residue was dissolved separately in 100 mL of acetone（stock solution） from which different concentrations, i.e.,20,40,60,80 and 100 ppm were prepared.Results:Larvicidal activity of M.oleifera exhibited in the first to fourth instar larvae of the A.stephensi,and the LC50 and LC90 values were 57.79 ppm and 125.93 ppm for the first instar,63.90 ppm and 133.07 ppm for the second inslar,72.45 ppm and 139.82 ppm for the third instar,78.93 ppm and 143.20 ppm for the fourth instar,respectively. During the pupal stage the methanolic extract of M.oleifera showed that the LC50,and LC90 values were 67.77 ppm and 141.00 ppm,respectively.Conclusions:The present study indicates that the phytochemicals derived from M.oleifera seeds extracts are effective mosquito vector control agents and the plant extracts may be used for further integrated pest management programs.
ISSN:2221-1691
2588-9222
DOI:10.1016/S2221-1691(11)60009-9