Evaluation of insecticidal activity of Lavandula coronopifolia essential oil against the Mediterranean fruit fly Ceratitis capitata Wiedemann (Diptera: Tephritidae)

•Carvacrol, E-caryophyllene and caryophyllene oxide are the major compounds of L.c.•L.c presented significant insecticidal activity against Ceratitis capitata.•Essential oil could be used as alternative environmentally bio-insecticide. The present investigation was aimed to assess the toxicity of La...

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Bibliographic Details
Published in:South African journal of botany 2022-09, Vol.149, p.748-753
Main Authors: Ouarhach, Aicha, Ait Said, Loubna, Aboussaid, Houda, Ghalbane, Ichrak, El Messoussi, Said, Romane, Abderrahmane
Format: Article
Language:English
Subjects:
Biotechnology
Ceratitis capitata
Food bait
Insecticidal activity
Lavandula coronopifolia
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Summary:•Carvacrol, E-caryophyllene and caryophyllene oxide are the major compounds of L.c.•L.c presented significant insecticidal activity against Ceratitis capitata.•Essential oil could be used as alternative environmentally bio-insecticide. The present investigation was aimed to assess the toxicity of Lavandula coronopifolia (Lamiaceae) essential oil (EO) against adult Mediterranean fruit fly. Ceratitis capitata (Wiedemann) (Diptera Tephritidae) is one of the most destructive fruit pests in Morocco. Essential oil was extracted from leaves of lavender (L. coronopifolia) by hydrodistillation and analyzed by GC and GC/MS. The main compound is carvacrol (48.9%) followed by E-caryophyllene (10.8%) and caryophyllene oxide (7.7%). The EO was examined in the laboratory for 7 days to assess their activity against Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) adults by ingestion toxicity. We also conducted oviposition bioassay in the laboratory, testing the oviposition deterrence of essential oils. The oil showed 75% mortality of adults at the concentration of 150 µl/g after 24 h of exposure. Great differences in insect mortality were observed depending on the sex of the insects, oil concentrations and exposure time. The ingestion toxicity potential of L. coronopifolia on adults was higher (LC 50 = 86.34 µl/g, LC 95 = 236.07 µl/g) and also, deterred significantly the oviposition by C. capitata, reducing the number of eggs laid by about 94% compared with the controls for the concentration of 55µl/g. Results suggested that L. coronopifolia EOs may have potential as a control agent against this major stored product insect.
ISSN:0254-6299
DOI:10.1016/j.sajb.2022.05.026