alexa Laboratory Study on Larvicidal Activity of Different Plant Extracts against Aedes aegypti
ISSN: 2347-7830

Research & Reviews: Journal of Ecology and Environmental Sciences
Open Access

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Research Article

Laboratory Study on Larvicidal Activity of Different Plant Extracts against Aedes aegypti

Muhammad Uzair Mukhtar*, Shumaila Mushtaq, Ali Arslan, Arkam Bkahtyar Zaki, Hammad Khaleeq and Adil Bhatti

Quaid-e-Azam University, Medical Entomology and Disease vector control, Islamabad, Pakistan

*Corresponding Author:
Muhammad Uzair Mukhtar
Quaid-e-Azam University
Medical Entomology and Disease vector control
Islamabad, Pakistan
E-mail: [email protected]

Received: 15 July 2015 Accepted: 20 August 2015 Published: 25 August 2015

 

Abstract

Background: Mosquitoes transmit serious human diseases causing millions of deaths every year. Use of synthetic insecticides to control vector mosquitoes has caused physiological resistance and adverse environmental effects in addition to high operational cost. Insecticides of botanical origin have been reported as useful for control of mosquitoes.

Methodology: WHO standard larvicidal bioassay method was used and 30 late 3rd and early 4th instar larvae were subjected to four different concentrations i.e. 1%, 2%, 3% and 4% against test solutions which were made by using acetone as solvent. Mortality counts were made every 24 and 48 hours in each treatment. The LC50, LC99, standard error, fiducial limits at 95% confidence and regression equations were calculated.

Results: The results showed neem and pine oil extract are best in terms of LC50 and LC99, with 100% mortality at 3% and 4% concentration after 24 hours. The trend with respect to LC50 and LC99 after 48 hours was Pine > Neem > Til > Kadu respectively.

Conclusion: The results suggested that plant extract oil formulations were found effective in controlling Aedes aegypti larvae under lab conditions. As these trees are widely distributed in Pakistan, their formulation might prove to be an effective and eco-friendly larvicide, which could be used as an alternative for dengue control.

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