Innate positive chemotaxis to paeonal from highly attractive Chinese medicinal herbs in the cigarette beetle, Lasioderma serricorne.

serricorne showed significant relative preferences for paeonal at doses of 1 μg ( χ 2 = 4.261, df = 1, P = 0.039), 10 μg ( χ 2 = 5.565, df = 1, P = 0.018), and 1000 μg ( χ 2 = 5.000, df = 1, P = 0.025), and highly significant relative preferences at doses of 100 μg ( χ 2 = 7.681, df = 1, P = 0.006) and 500 μg ( χ 2 = 10.083, df = 1, P = 0.001), when compared with mineral oil (Fig. 3 ).

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