Fumigation activities of 13 kinds of essential oils and anethole against the adult of Tribolium castaneum (Herbst)

On the condition of dosage of 20 μL/L, the fumigation effects of 13 kinds of essential oils against the adult of Tribolium castaneum (Herbst) are studied. The results show that the effect of Illicium verum oil was better than that of the other essential oils. The mortality rate reached 100% under the 24 h exposure. The results of fumigation toxicity of Illicium verum oil against adults show as follows: with the extension of exposure time, the fumigation effect enhanced significantly. When fumigation time increased from 12 h to 72 h, the LC50 decreased from 13.88 μL/L to 5.08 μL/L. Then 21 kinds of ingredients from Illicium verum oil were found by GC-MS; the main component was anethole, and the relative content was 79.81%. The fumigation toxicity results of anethole against adults show an increase of the fumigation time from 12 h to 72 h; the LC50 decreased from 7.76 μL/L to 3.36 μL/L. The LC50 of anethole was lower than that of Illicium verum oil. The fumigation effects of anethole against Tribolium castaneum adult is stronger than that of Illicium verum oil.