Evaluation of Repellent and Larvicidal Activity of Cymbopogon Citratus (Lemon Grass) Against Filarial Vector, Culex Quinquefasciatus

  • Ekesiobi A.O. Department of Biological Sciences, Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria
  • Anene C.C. Department of Biological Sciences, Chukwuemeka Odumegwu Ojukwu University, Uli Anambra State, Nigeria.
  • Igbodika M.C. Department of Biological Sciences, Chukwuemeka Odumegwu Ojukwu University, Uli Anambra State, Nigeria
  • Nwigwe H.C. Department of Biological Sciences, Chukwuemeka Odumegwu Ojukwu University, Uli Anambra State, Nigeria.
  • Emmy-Egbe I. O. Department of Biological Sciences, Chukwuemeka Odumegwu Ojukwu University, Uli Anambra State, Nigeria
  • Orji N.M Department of Biological Sciences, Chukwuemeka Odumegwu Ojukwu University, Uli Anambra State, Nigeria
Keywords: Poarceae, Culex quinquefasciatus, Cymbopogon citratus, larvicidal activity

Abstract

In search for a suitable alternative biocontrol technique to chemical insecticides, the larvicidal and repellent activity of Cymbopogon citratus (Lemon grass), against filarial mosquito vector, Culex quinquefasciatus larvae and adults was evaluated between April 2010 and March, 2011. Cymbopogon citratus (bush minth) belonging to the family, Poarceae is common and widely distributed in the South-eastern, Nigeria. The repellent and larvicidal activity of the ethanol extract of this plant against the filarial vector, Culex quinquefasciatus 3rd intar larvae and adults respectively was investigated for 48 hours. The extract was screened chemically for phytochemicals and showed presence of Alkaloids, Flavonoids, Tannins, Saponins and Steroids. The extract showed larvicidal activity with Lethal Concentration LC50, LC90 values of 91.765mg/l and 174.156mg/l respectively; and repellent activity with Effective Dose, ED50, ED90 values of 40.541mg/l and 330.728mg/l respectively. Adult mosquito repellency and larval mosquito mortality significantly and positively correlated with the concentrations of the ethanol extract (p<0.05). This study revealed that an indigenous plant, Cymbopogon citratus could be considered as potential natural larvicidal and repellent agent against mosquitoes.

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Published
2018-04-05
How to Cite
A.O., E., C.C., A., M.C., I., H.C., N., I. O., E.-E., & N.M, O. (2018, April 5). Evaluation of Repellent and Larvicidal Activity of Cymbopogon Citratus (Lemon Grass) Against Filarial Vector, Culex Quinquefasciatus. African Journal of Education,Science and Technology, 3(4), pp 25-32. https://doi.org/https://doi.org/10.2022/ajest.v3i4.72
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Articles