Insect Science (2007) 14, 213-218

Bibi Zahra Sahaf, Saeid Moharramipour and Mohammad Hadi Meshkatalsadat (2007)
Chemical constituents and fumigant toxicity of essential oil from Carum copticum against two stored product beetles
Insect Science 14 (3), 213-218
Abstract: Plant secondary metabolites play an important role in plant-insect interactions and therefore such compounds may have insecticidal or antifeedant activity against insects. Carum copticum C. B. Clarke (Apiaceae) is one of these plants that have medicinal effects on humans. The chemical composition of the essential oil from dry seeds of C. copticum was studied by gas chromatography (GC) and gas chromatography mass spectrometry (GC-MS). Thymol (41.34%), alpha-terpinolene (17.46%) and ρ-cymene (11.76%) were found to be the major constituents of the oil. In fumigant toxicity tests with the essential oil against adults of Sitophilus oryzae (L.) and Tribolium castaneum (Herbst) at 27 ± 1°C and 60%± 5% RH, it was observed that S. oryzae (LC₅₀= 0.91 μL/L) were significantly susceptible than T. castaneum (LC₅₀= 33.14 μL/L). The mortalities of the insect species reached 100% at concentrations higher than 185.2 μL/L and 12-h exposure time. The findings indicate the strong insecticidal activity of C. copticum oil and its potential role as a fumigant for stored-product insects.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Saeid Moharramipour

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tribolium castaneum
	Sitophilus oryzae