International Research Journals

International Research Journal of Plant Science

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S. Hannah Catherine Raj

Department of Zoology, Pachaiyappa’s College, Chennai, India


  • Full Length Research Paper   
    Larvicidal activity of crude extracts and fractions of native plants against aedesaegyptil. and culexquinquefasciatussay. (Diptera: Culicidae)
    Author(s): S. Hannah Catherine Raj* and N. Shettu

    Several millions of people get affected by mosquito-borne sicknesses every year, and hence mosquito-borne sicknesses are regarded as major public health diseases. The vector mosquito Aedesaegypti transmits chikungunya fever, dengue fever, yellow fever viruses and Culexquinquefasciatus transmits filarial nematode and cause filariasis. In the present study, In the present study, the leaves of Cymbopogoncitratus, Azadirachtaindica,Tageteserecta, Eucalyptus deglupta and Syzygiumaromaticum were screened on Cx. quinquefasciatus and Ae. aegypti mosquito larvae. Ethanol extract of Eucalyptus deglupta leaves was found to be very active and the LC50 and LC90 results were 63.54ppm, 96.90ppm against Cx. quinquefasciatus and 72.19ppm, 137.90ppm against Ae. aegypti larvae, respectively. Eight fractions were obtained from the active extract and fraction 7 was identified to be very effective. The LC5.. View More»
    DOI: 10.14303/2141-5447.2020.0015

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