Mosquitocidal and water purification properties of Ocimum sanctum and Phyllanthus emblica

  • Kadarkarai Murugan | kmvvkg@gmail.com Division of Entomology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, India.
  • Pari Madhiyazhagan Division of Entomology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, India.
  • Arjunan Nareshkumar Division of Entomology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, India.
  • Thiyagarajan Nataraj Division of Entomology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore-641 046, India., India.
  • D. Dinesh Division of Entomology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, India.
  • Jiang Shiou Hwang Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan, Province of China.
  • Marcello Nicoletti Department of Environmental Biology, Università “La Sapienza”, Rome, Italy.

Abstract

Ocimum sanctum was tested for its larvicidal and water sedimentation properties; the fruit ethanol and methanol extracts of Phyllanthus emblica were tested for phytochemical, larvicidal, oviposition-deterrent and ovicidal activities. Results emphasized that plant extracts have high toxicity against the egg and larvae of the malarial vector Anopheles stephensi and also have water sedimentation properties. LC50 of Phyllanthus emblica against Anopheles stephensi larvae ranged from 33.08 ppm to 81.26 ppm and from 23.44 to 54.19 ppm for ethanol and methanol extracts, respectively. Phyllanthus emblica also showed excellent ovipositional deterrent and ovicidal activities. The oviposition activity index value of ethanol and methanol extracts of Phyllanthus emblica at 500 ppm were -0.80 and -0.92, respectively. Ocimum sanctum includes both insecticidal secondary compounds, amino acids (glycine, lysine), vitamin C and other substances, that make treated water suitable for human consumption. Water quality parameters such as color, turbidity and pH were analyzed in the water samples (pre-treatment and post-treatment of plant extracts) taken from the breeding sites of mosquitoes. Hence, the plant product can be used as both mosquitocidal and water purifier.

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Published
2012-12-16
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CSIR, New Delhi, India
Keywords:
Anopheles stephensi, Ocimum sanctum, Phyllanthus emblica, ovipositional deterrent, ovicidal, mosquitocidal, water purification.
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How to Cite
Murugan, K., Madhiyazhagan, P., Nareshkumar, A., Nataraj, T., Dinesh, D., Hwang, J., & Nicoletti, M. (2012). Mosquitocidal and water purification properties of Ocimum sanctum and Phyllanthus emblica. Journal of Entomological and Acarological Research, 44(3), e17. https://doi.org/10.4081/jear.2012.e17