黄猄蚁对橡胶盔蚧种群消长的影响

调查西双版纳地区黄猄蚁OecophyllasmaragdinaFabricius对橡胶盔蚧Parasaissetianigra(Nietner)种群数量和寄生蜂的影响。结果表明:黄猄蚁对橡胶盔蚧种群消长及寄生蜂均有影响。"有蚂蚁"枝条上介壳虫种群数量显著高于"无蚂蚁"枝条。"有蚂蚁"枝条介壳虫死亡率和寄生蜂都显著低于"无蚂蚁"枝条。说明黄猄蚁的存在影响了橡胶树介壳虫的种群繁殖率和死亡率。建议在今后综合防治中,充分利用蚂蚁与橡胶树介壳虫关系。通过驱逐橡胶树上的蚂蚁来有效遏制介壳虫的发生。

Effects of Oecophylla smaragdina on Parasaissetia nigra population dynamics

The effect of Oecophylla smaragdina Fabricius on Parasaissetia nigra (Nietner) population dynamics was investigated in Xishuangbanna. The results showed that O. smaragdina may influence P. nigra population dynamics and its parasitic wasps. Population size of P.nigra was significantly higher on the branches of trees with ants than those without ants, and mortality and amount of parasitic wasps were significantly lower on trees with ants than those without ants. It was suggested that the interaction of O.smaragdina and P.nigra should be applied in IPM, in which ants should be excluded to control P. nigra .