云南切梢小蠹蛀食云南松枝梢行为研究

Shoot Feeding Behaviour of Tomicus yunnanensis on Pinus yunnanensis Trees

云南切梢小蠹(Tomicus yunnanensis)通过蛀梢危害与蛀干危害共同致死云南松(Pinusyunnanensis)。通过野外自然调查,对云南切梢小蠹蛀食枝梢影响因素进行了探讨。结果表明,云南切梢小蠹蛀梢坑道长度与枝梢长度和蛀梢直径呈显著相关,且云南切梢小蠹侵入枝梢的部位也很大程度上决定了蛀梢坑道的长度,二者显著相关。研究发现,影响云南切梢小蠹蛀梢坑道长度的主要因素为:枝梢长度,枝梢直径,侵入孔位置。

Shoot feeding and trunk attack by the pine shoot beetle（Tomicus yunnanensis,Coleoptera： Scolytinae） on Yunnan pine（Pinus yunnanensis） are two factors to result in the death of the trees.Factors influencing shoot feeding of the beetle were examined by field investigation.The results showed that there existed a remarkable relationship between the galleries length and shoot length,this correlation was also noticeable between the galleries length and shoot diameter.In addition,attack position in a shoot play a significant part in galleries length of T.yunnanensis.The main impact factors of T.yunnanensis were shoot length,shoot diameter and attack position.