烟草甲初孵幼虫耐饥饿能力及其对包装材料的钻透率

Starvation tolerance of newly hatched Lasioderma serricorne larvae and their penetration rates through different packaging materials

为明确烟草甲幼虫耐饥饿能力及其钻蛀行为,分析了不同温度条件下烟草甲初孵幼虫的耐饥饿能力,并进行了烟草甲幼虫对无纺布、铝箔纸、复合膜和牛皮纸等4种包装材料的钻蛀情况试验。结果表明:①不同处理温度对烟草甲初孵幼虫耐饥饿能力具有显著影响,环境温度越高,烟草甲初孵幼虫耐饥饿能力越差。在15℃和20℃时,烟草甲初孵幼虫耐饥时间可达到14 d以上,而45℃条件下,饥饿处理的烟草甲幼虫24 h内全部死亡。②烟草甲初孵幼虫无法通过钻蛀行为进入完好的牛皮纸、复合膜、铝箔纸和无纺布包装材料,但能够钻透孔径大于0.40 mm的牛皮纸、复合膜、铝箔纸和无纺布包装材料。因此,在生产中应保持包装材料的完整性,以阻止烟草甲的为害。

In order to determine the starvation tolerances and boring behaviors of newly hatched Lasioderma serricorne larvae,their starvation tolerances at different temperatures were analyzed.In addition,their penetration rates through four packaging materials(non-woven cloth,aluminum foil,composite film,and kraft paper)were also investigated.The results showed that:1)Temperature had significant effects on the starvation tolerances of the newly hatched larvae.The higher the ambient temperature,the worse the starvation tolerances of L.serricorne larvae would be.At 15 or 20℃,the newly hatched larvae could survive over 14 days without food,and all the larvae died within 24 h at 45℃without food.2)L.serricorne larvae could not enter into sound kraft paper,composite film,aluminum foil and non-woven packaging materials,however they could bore through those packaging materials with small holes(>0.40 mm in diameter).Therefore,the packaging materials should be kept sound to prevent the harm done by L.serricorne in practice.