产卵木段直径对松褐天牛成虫产卵刻槽数量的影响

Impact of diameter of wood section on oviposition scar number of Monochamus alternatus Hope adults

以不同直径的马尾松木段为产卵材料,对松褐天牛产卵刻槽进行了室内观察研究。结果表明,产卵木段直径为3 cm以上的有效刻槽数以及含2粒卵的比例均显著高于直径为2 cm以下的(P <0.05)。产卵木段越粗,刻槽的长度、深度也越长以及产卵处的树皮厚度也就越厚;无论产卵木段直径大小,刻槽的宽度、卵的大小以及卵到刻槽口的距离总体基本不变。

Different diameter sizes of Pinus massoniana branch sections were used to observe the oviposition behaviour of Monochamus alternatus Hope(Coleoptera:Cerambycidae)in laboratory.The results showed that the effective oviposition scar number and the proportion of two eggs per scar on branch with diameter more than 3 cm were both significantly higher than those with diameter less than 2 cm.The length and depth of the oviposition scars,and the thickness of the bark at the spawn exhibited a significant positive linear relationship with the thickness of the branch.But width of the oviposition scar,the length and width of the eggs,and the distance from the egg to the scar were not related to the thickness of the branch.