Larvicidal activities of hydro-ethanolic extracts of three Cameroonian medicinal plants against Aedes albopictus

Tankeu Nzufo Francine, Biapa Nya Prosper Cabral, Pieme Constant Anatole, Moukette Moukette Bruno, Nanfack Pauline, Ngogang Yonkeu Jeanne

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Abstract

Objective To investigate the larvicidal activity of Syzygium guineense (Myrtaceae) (S. guineense), Monodora myristica and Zanthoxylum heitzii (Rutaceae) (Z. heitzii) extracts against Aedes albopictus (Ae. albopictus). Methods The larvicidal activity of the hydro-ethanolic extracts from these plant species was assessed at three different concentrations (50, 100 and 200 mg/L) on first-instar of Ae. albopictus larvae in comparison with untreated controls. Mortality rate was recorded daily for a period of 12 days. The values of LC50and lethal time killing 50% of the tested individuals (LT50) were calculated using the log-probit analysis. Results The root extract of S. guineense exhibited the best activity with 100% mortality after 8 days of treatment at 200 mg/L, followed by the fruit extract of Z. heitzii with 83.33% mortality at the same concentration. Nonetheless, larvae were most susceptible to the fruit extract of Z. heitzii both in terms of LC50(39.89 mg/L) and LT50(145.68 h). A statistically significant difference between the control and the group treated at 200 mg/L was noticed in all the extracts. Conclusions The present study shows that the hydro-ethanolic extracts of S. guineense, Monodora myristica and Z. heitzii tested have significant larvicidal activity. These preliminary results are of great interest and some of these plant species can be proposed for the formulation of new bioinsecticides to control Ae. albopictus populations.
Original languageEnglish
Pages (from-to)931 - 936
Number of pages6
JournalAsian Pacific Journal of Tropical Biomedicine
Volume6
Issue number11
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology (miscellaneous)

Cite this

Francine, T. N., Prosper Cabral, B. N., Constant Anatole, P., Bruno, M. M., Pauline, N., & Jeanne, N. Y. (2016). Larvicidal activities of hydro-ethanolic extracts of three Cameroonian medicinal plants against Aedes albopictus. Asian Pacific Journal of Tropical Biomedicine, 6(11), 931 - 936. https://doi.org/10.1016/j.apjtb.2016.09.004