• Dr.T.Elizabeth Thangamani Sunitha
• S.Kannammal

Plants as alternative source of repellant agent, reported in numerous ethno botanical evaluations. The summary of recent information on claiming and efficacy of plant -based repellants as well as promising new developments in the field . Plant derived repellants usually do not pore hazards of toxicity to humans and domestic animals and are easily biodegraded . Compared to synthetic compounds , Natural products are presumed to be safer for human. This study has attempted to highlight the plants claimed to be used or associated with mosquito repellant. The protection time was recorded in essential oils like Chothukathalai, Adthoda, Nelli, Karpooravalli, Nithyakalyani, Pachilai, Thumbai, Pappali, Aavarampoo,Pungam it shows that there is a variation among them against the mosquito . Among these leaves extract of Pappali, Chothukathalai, and Karpooravalli showed very effective compared to other extracts. Pappali showed more effective in indoor area. Essential oils are volatile mixtures of hydrocarbons with a diversity of functional groups,and their repellent activity has been linked to the presence of mono-terpenes and sesquiterpenes. In some cases, these chemicals can work synergistically, improving their effectiveness. The essential oils total protection is against the mosquito bites. The intervals between the time of repellent of application and the landing of the first mosquito for biting are considered as the protection time. The results were obtained from investigation of papaya(94.73%),Chothukathalai(87.87%), Karpooravalli (83.87%)was found to be more effective than the control. Hence the present study essential oils were used comparison of results showed that Papaya, Chothukathalai, Karpooravalli are best protection time than other essential oils. Natural anti mosquito agents are likely to offer a cheaper and effective tool that can be used to prevent as well as drive away vector mosquitoes from human dwellings. The potential of plants as sources of essential oils with mosquito repellency effect offers great scientific promise and deplorable opportunity for incorporation into integrated vector management.

Repellant,Protection time, Insecticides, Essential oil,Efficacious

"REPELLANT ACTIVITY OF SELECTED ESSENTIAL OILS AGAINST THE MOSQUITO.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 11, page no.636-646, November-2020, Available :http://www.jetir.org/papers/JETIR2011085.pdf

"REPELLANT ACTIVITY OF SELECTED ESSENTIAL OILS AGAINST THE MOSQUITO.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 11, page no. pp636-646, November-2020, Available at : http://www.jetir.org/papers/JETIR2011085.pdf