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- Title
Toxic and Biochemical Effects of Juniperus communis Essential Oil on the Red Palm Weevil Rhynchophorus ferrugineus (Olivier.) (Coleoptera: Curculionidae).
- Authors
Sharaby, Aziza; Mona, EL-Dosary
- Abstract
Possible use of the natural essential oil of Juniperus communis plant as toxic product alternative to chemical insecticide through an IPM program for controlling (RPW) Rhynchophorus ferrugineus (Olivier.) (Coleoptera: Curculionidae) was carried to decrease generating resistance. The tested essential oil possesses a toxic effect for all stages of the pest, especially for eggs and larvae as contact or fumigant poison. LC50 as contact poison was 580, 281 and 1286.7 μL/100ml. water on egg, 4th instar larva and adult respectively, while LC50 as fumigant poison was 31.01 and 78.3μl/ l air for egg and 4th instar larva, respectively, adult was not affected by fumigation at all the tested oil concentrations. The oil median lethal concentration (LC50 concentration) of Juniper oil induced some biochemical changes on adults when used as contact poison. The total protein significantly increased in male body, and in the gut tissues in both sexes, while protein synthesis in the haemolymph was decreased. Chitin content of adult's cuticle of both sexes was not affected. Phenoloxidase enzymes in male and female haemolymph and body wall were activated. Acetylcholinestrase or acid phosphate enzyme in the haemolymph or in the body tissues was not significantly affected. The to tal lipid content in haemolymph increased in males and females. The uric acid concentration decreased in males haemolymph .
- Subjects
BIOCHEMICAL toxicology; JUNIPERUS communis; PHYSIOLOGICAL effects of essential oils; INSECTICIDE application; CURCULIONIDAE; RHYNCHOPHORUS
- Publication
Egyptian Journal of Biological Pest Control, 2016, Vol 26, Issue 2, p339
- ISSN
1110-1768
- Publication type
Article