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ORIGINAL ARTICLE
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Larvicidal potential and residual activity effect of kinnow peel oil against Aedes aegypti L


1 Department of Zoology, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
2 School of Organic Farming, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab, India

Correspondence Address:
Devinder Kaur Kocher,
Department of Zoology, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana-141004, Punjab
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-9062.337508

Background & objectives : Transmission of dengue virus by Aedes aegypti mosquito is one of the major global health concerns. The present study was aimed to explore the larvicidal potential of oil extracted from kinnow peel waste to be used as an efficient, economic and safe agent against Ae. aegypti. Methods: Kinnow peel oil was extracted and its five concentrations @ 40, 50, 60, 70 and 80 ppm were tested against 4 th instar larvae of Ae. aegypti. Larval mortality (%) and LC 50 and LC 90 values of toxicity were determined followed by evaluating the residual activity effect of its leftover effective concentration on larval mortality, development and emergence. Effect of storage (2, 4 and 6 months) on larvicidal potential of kinnow peel oil was also determined. Results: Out of the tested concentrations, 70 ppm of kinnow peel oil was found to be effective concentration against 4 th instar larvae of Ae. aegypti. LC 50 and LC 90 toxicity values were calculated out to be 47.26and 61.56 ppm, respectively. No residual activity effect in terms of larval mortality was found, however a significant delay in development (L4 to adult) was observed after placing new larvae in the leftover effective oil concentration. No effect of storage on larvicidal potential of 2, 4 and 6 months old kinnow peel oil in comparison to freshly extracted oil was observed. Interpretation & conclusion: Kinnow peel oil proved to have good potential as a bio-larvicide against Ae. aegypti and could be used as effective and eco-friendly mosquito control agent in future.


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    -  Kaur A
    -  Kocher DK
    -  Kumar R
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