Ovicidal, larvicidal and adulticidal activities of essential oils from Peganum harmala L. (Zygophyllacae) against date moth Ectomyelois ceratoniae Zeller (Lepidoptera: Pyralidae)
By: Lebbouz Ismahane, Mehaoua Mohamed Sghir, Merabti Ibrahim, Bessahraoui Khadija, Ouakid Mohamed Laid
Key Words: Toxicity, Peganum harmala, Ectomyelois ceratoniae, essential oils, TL50.
Int. J. Biosci. 8(5), 146-152, May 2016.
The date moth Ectomyelois ceratoniae is the major insect pest of Algerian palm gardens. All phoenicicol regions are infested. The study of toxic activity of essential oils from Peganum harmala by topical application on eggs forth instar larvae and by fumigation on adults, showed perceptible effects against this insect. The hatching rate recorded for eggs treated by Peganum harmala essential oils is a low (5.56%) against the control (87.35%). The topical application of essentials oils on forth instar larvae (L4) achieved 56.66% mortality after five days of treatment with lethal Time 50(TL50) of 2.57 days. For adults, 100% mortality was recorded after 5 days of treatment with a lethal Time 50 (TL50) of 1.45 days. These results indicate that Peganum harmala essential oils have an ovicidal, larvicidal and adulticidal effects against Ectomyelois ceratoniae and it can be used as an alternative of chemical pesticides.