Bioactivity of Trans-cinnamaldehyde against Cigarette Beetle, Lasioderma serricorne (Fabricius) (Coleoptera: Anobiidae)

Abstract

Insecticidal activity of the trans-cinnamaldehyde was studied against the cigarette beetle, Lasioderma serricorne (F.) under laboratory conditions. The egg stage was the most tolerant stage for both contact and fumigant toxicity. The mortality of L. serricorne grubs was highest (96.67%) at 2000 ppm of trans-cinnamaldehyde when applied topically. In case of adults, highest mortality of 98.33 per cent was observed at 4000 and 5000 ppm of trans- cinnamaldehyde after 48 hours after treatment. Trans-cinnamaldehyde caused 96.67 and 98.33 per cent mortality of grubs and adults of L. serricorne, respectively at 50000 ppm after 48 hours of exposure over treated surface. In case of surface treatment, the LC50 values of trans-cinnamaldehyde for grubs and adults of L. serricorne were 18303.78 and 10747.42 ppm, respectively after 48 h of exposure. In fumigant toxicity study, 60.00 and 98.33 per cent mortality were observed against grubs and adults of L. serricorne, respectively at 50000 ppm after 48 h of exposure. The LC50 values of trans-cinnamaldehyde for grubs and adults of L. serricorne when tested for fumigant toxicity were 9406.68 and 16550.70 ppm, respectively after 48 h of exposure.