Efficacy of Xanthium sibiricum Fruit Extract on Lasioderma Serricorne (Coleoptera: Anobiidae)

Abstract

The efficacy of Xanthium sibiricum fruit extract was investigated on eggs, larvae, pupae and adults of Lasioderma serricorne. X. sibiricum fruit extract had strong fumigant activity against L. serricorne, and the toxicity enhanced significantly with the increasing treatment dosage. Larvae and adults were much more susceptible to the plant extract than eggs and pupae. The corrected mortality of adults, pupae, larvae and eggs reached 89.76, 41.68, 95.13 and 32.51% at a dosage of 40μl/l air after 48 h of exposure, respectively. The declining order of susceptibility of different development stages of L. serricorne to X. sibiricum fruit extract was as follows: larvae (LD₅₀= 9.73 μl/l air) , adults (LD₅₀= 10.98 μl/l air) , pupae (LD₅₀= 55.32 μl/l air) and eggs (LD₅₀= 86.89 μl/l air).