Larvicidal and adulticidal effects of essential oils of Corymbia citriodora (Myrtaceae) and Xylopia aetiopica (Annonaceae) on Anopheles gambiae sensu stricto Giles 1902

With the objective of combating malaria by reducing the populations of Plasmodium spp vectors, the larvicidal and adulticidal effects of essential oils of Corymbia citriodora (Myrtaceae) and Xylopia aetiopica (Annonaceae) on Anopheles gambiae sensu stricto Giles 1902 were determined. Biological tests were carried out using a methodology inspired by the standard WHO protocol (2005) and revealed that the essential oils tested on larvae and adults of Anopheles gambiae sensu stricto Giles 1902 possess remarkable larvicidal and adulticidal properties. In stage II larvae, LC50 values (ppm) were 27.07 and 42.88 respectively for Corymbia citriodora and Xylopia aetiopica with HL50s of 1h 09min 32sec and 2h 41min 02sec respectively. In stage IV larvae, LC50 values (ppm) were 30.62 (Corymbia citriodora) and 47.85 (Xylopia aetiopica) with HL50s of 1h 40min 25sec and 3h 40min 41sec respectively. Adult LC50s (ppm) for Corymbia citriodora and Xylopia aetiopica were 32.25 and 35.13 respectively. Adult HL50s were 1h 50min 24sec and 2h 11min 46sec. Corymbia citriodora plant oil, which showed correspondingly low LC50s and HL50s, is therefore the most effective compared with Xylopia aetiopica plant oil.