Toxicity of 1,8-cineole towards three species of stored product coleopterans

Abstract

1,8-cineole, one of the components of the essential oil of Artemisia annwa, was evaluated for repellency and toxicity against three stored product coleopterans-Callosobruchus maculatus F. (Coleoptera: Bruchidae), Rhyzopertha dominica F. (Coleoptera: Bostrychidae) and Sitophilns oryzae L. (Coleoptera: Curculionidae). It was found to be moderately repellent to all three species, with a mean repellency in the range of 65-74% at the highest dose tested (4.0 |al/ml) within lh. A contact toxicity assay revealed that direct topical application was more effective than using impregnated filter paper. The compound was more effective as a fumigant and gave 93-100% mortality against all the three pest species at the dose of 1.0 jil/1 air under empty jar conditions as compared to treatment of jars filled with grain (11-26% mortality). The lethal dose and lethal concentration required to kill 50% of the beetles (LD 5() and LC 50 respectively) varied.with the toxicity assay method. LD. () values of 0.03, 0.04 and 0.04 (il/insect against C. maculatus, R. dominica and S. oryzae respectively were found in the topical application assay while the LC 50 in the fumigant assay was 0.28, 0.33 and 0.46 (aI /1 against C. maculatus, R. dominica and S. oryzae respectively.

Insecticidal Activity and Chemical Composition of Essential Oil from Artemisia Judaica L. Against Callosobruchus Maculatus (F.) (Coleoptera: Bruchidae)

“…The fumigant activity of some essential oils from the Artemisia species have been evaluated against a number of stored product insects. Fumigant toxicity of essential oils has been reported from A. annua against S. oryzae (Aggarwal et al 2001), and A. aucheri oil showed fumigant properties on stored insect (Shakarami et al 2004). Fumigant properties of A. sieberi oil on S. oryzae and T. castaneum were also shown (Negahban et al 2006(Negahban et al , 2007.…”

Effect of Artemisia annua L. essential oil on toxicity, enzyme activities, and energy reserves of cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

“…The essential oil of Artemisia judaica L. has been demonstrated to possess insecticidal activity and repellence against several insects, such as Callosobruchus maculatus (Fab. ) and Sitophilus oryzae L. (Aggarwal et al 2001;Abd-Elhady 2012). Excessive use of chemical insecticides adversely affects the environment and human health.…”

Artemisia absinthium-borne compounds as novel larvicides: effectiveness against six mosquito vectors and acute toxicity on non-target aquatic organisms

“…In addition, the fumigant activity of some EOs from Artemisia species has been evaluated against a number of stored product insects. Fumigant toxicity of the essential oils has been reported for A. annua against Sitophilus oryzae (Aggarwal et al 2001), for Artemisia tridentata against some stored grain insects (Dunkel and Sears 1998). Artemisia aucheri Boiss oil also had fumigant toxicity to stored product pests (Shakarami et al 2004), and Artemisia sieberi oil to S. oryzae and T. castaneum (Negahban et al 2006a, b).…”