Insecticidal activity of Citrus aurantium and Eucalyptus globulus essential oils and their major constituents against nymphs and adults of Pediculus humanus capitis De Geer
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Abstract
The results showed that every tested EO and its constituents exhibited a higher pediculocidal activity against nymphs and adults of P. humanus capitis than 25% (w/v) benzyl benzoate did. In particular, 5% 1,8-cineole exhibited the highest insecticidal effects against P. humanus capitis nymphs and adults with 100% mortality rate at 1 min with an LT50 of 0.2 min and an LC50 of 0.7%. The other EO formulations provided a mortality rate ranging from 0-96.0% and an LT50 ranging 0.3-315.9 min against nymphs. Against the adults, the mortality rate ranged from 12.0-96.0% with an LT50 ranging from 1.2-314.5 min. Our data showed that 1,8-cineole has a great potential to control head lice populations and should be further developed into a safe and effective pediculicide
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