Journal of Biotechnology
Volume 1, No. 1, 2022
Pages 46-55
DOI: 10.36108/jbt/2202.10.0140
Adulticidal Activity of Essential Oils of Laggera pterodonta and Laggera aurita against Anopheles gambiae. (Diptera: Culicidae); the major Vector of Malaria in Nigeria
DANTANKO, Fatima*1, MALANN, Y. David2, YUSUF, Hajara Oyiza 1 and IBRAHIM, Halima3
1National Biotechnology Development Agency, Environmental Biotechnology and Bio conservation Department, Along Musa Yar’adua Expressway, Airport Road, Lugbe –Abuja,
2 Department of Biological Sciences, University of Abuja
3 Department of Biological Science, Kaduna State University
*Corresponding author: Email:fatimadantanko@yahoo.com Orcid: https://orcid.org/0000-0001-5755-6016
Abstract
Effects of essential oils from two Laggera species (Laggera pterodonta and L. aurita) found in Nigeria were evaluated on adult Anopheles gambiae. The essential oils were obtained by hydro-distillation and showed significant bioactivity at high doses. L. pterodonta essential oil was found to be more toxic against adults of An. gambiae (LC50 of 943 mg/L) than L. aurita essential oil (LC50 of 1313 mg/L). The major constituents of the essential oil of L. pterodonta by GC/MS were ɤ-Terpinene (12.72%), Benzene,2-tert-butyl-1,4-dimethoxy (12.66%), (+)-4-Carene (10.40%), 4-Carvomenthenol (9.22%), gamma-Eudesmol (8.67%) and Caryophyllene (5.83%) while that of L. aurita include Benzene, 2-tert-butyl-1,4-dimethoxy (25.24%), Caryophyllene (12.25%), ɤ-Terpinene (8.92%), α -Bourbonene (6.30%), tau-Muurolol (5.91%), (+)-4-Carene 4,7,7-Trimethylbicy (5.58%) and α-Cadinol (5.29%). The result obtained suggests L. pterodonta and L. aurita can also serve as natural mosquitocides.
Keywords: Adulticide, Anopheles gambiae, Essential oil, Laggera aurita, Laggera pterodonta