• Karthick, R.,
• Karthick, R.,
• Mohanakrishnan, H.
• Jeyabalan, D.

Mosquitoes are insect vectors responsible for the transmission of parasitic and viral infections to millions of people worldwide, with substantial morbidity and mortality. Culex species are known to transmit human pathogens worldwide. Culex mosquitoes belong to order dipteral to the culicidae family, a medically and biologically important blood sucking insect that transmits many diseases to humans, causing an epidemic. Chemical insecticides in mosquitoes control results in various harmful effects which includes vector resistance, environment pollution and health hazards. This has necessitated the search for alternative approach for mosquito control pogramme using natural products of plant origin especially plant extract. The Present study was conducted to evaluate the mosquitocidal activity of Artemisia nilagirica against Culex quinquefasciatus. This study was conducted in the laboratory to evaluate the Artemisia nilagirica with different concentration (0.5%, 1% and 2%). The mosquitocidal activity was recorded of 24 hours, under laboratory condition 98% larval mortality was observed in 1st instar larvae of Culex quinquefasciatus, after the treatment of Artemisia nilagirica at 2% concentration; where as in 3rd and 4th instar larval mortality were 85% and 79% at 2% treatment respectively. The pupal mortality was 94% at 2% concentration treatment. Adult mortality was 91% after the treatment, the adult emergence was 35% drastically reduced after the treatment of Artemisia nilagirica. The larval duration was greatly extended up to 4 days after the treatment of Artemisia nilagirica at 2% than other concentration. Pupal duration also extended after the treatment of Artemisia nilagirica, at 2% concentration Fecundity and egg hatchability also reduced after the treatment of Artemisia nilagirica 27%. Adult repellency and Ovipositional deterrency also observed after the treatment of plant extract at 2% concentration adult repellency was 82% and ovipositional deterrency was 95%. Artemisia nilagirica at 2% concentration biting deterrency also increased after the treatment of Artemisia nilagirica (1% < 2% < 4%). Larval pupal intermediate were very high after the treatment of Artemisia nilagirica.

Culex quinquefasciatus, Artemisia nilagirica, larvicidal, pupicidal, adulticidal, pupal duration, adult duration.

"MOSQUITOCIDAL ACTIVITY OF ARTEMISIA NILAGIRICA AGAINST FILARIAL VECTOR, CULEX QUINQUEFASCIATUS SAY. (DIPTERA: CULICIDAE)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 4, page no.h704-h714, April-2022, Available :http://www.jetir.org/papers/JETIR2204794.pdf

"MOSQUITOCIDAL ACTIVITY OF ARTEMISIA NILAGIRICA AGAINST FILARIAL VECTOR, CULEX QUINQUEFASCIATUS SAY. (DIPTERA: CULICIDAE)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 4, page no. pph704-h714, April-2022, Available at : http://www.jetir.org/papers/JETIR2204794.pdf