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  • Title: Relative efficacy of DEPA and neem oil for repellent activity against Phlebotomus papatasi, the vector of leishmaniasis.
    Author: Srinivasan R, Kalyanasundaram M.
    Journal: J Commun Dis; 2001 Sep; 33(3):180-4. PubMed ID: 12206037.
    Abstract:
    The insect repellent N, N-diethylphenyl acetamide (DEPA) was compared with neem oil, a commercial preparation, for protection against 3 day old un-fed female of the sandfly, Phlebotomus papatasi, (Diptera: Psychodidae) under laboratory conditions on mouse. The percentage protection against sandfly bite provided by neem oil was significantly higher than DEPA when applied at 1% and 2% concentrations (p = 0.000, t = 21.474; df = 6 and p = 0.001, t = 5.960; df = 6 respectively). However, neem oil did not show any significant difference with DEPA at 5% (p = 0.1682, t = 0.15667; df = 6). This clearly indicates that at higher concentration (5%) both neem oil and DEPA exhibited similar repellent action against P. papatasi.
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