西藏飞蝗各发育阶段的耐寒性  

Cold-hardiness of Locusta migratoria tibetensis in each developmental stage

作　　者：王思忠 李庆[2] 封传红[3] 张敏[2] 蒋凡[3] 杨刚 罗林明[3] 

机构地区：[1]成都市植物园,成都610083 [2]四川农业大学农学院,雅安625014 [3]四川省农业厅植物保护站,成都610041 [4]甘孜州植保植检站,康定626000

出　　处：《昆虫知识》2007年第6期896-897,共2页Entomological Knowledge

基　　金：四川省科技厅应用基础项目(05JY029-007-3)

摘　　要：西藏飞蝗Locusta migratoria tibetensis Chen是青藏高原的重要农牧业害虫。对该虫各发育阶段的过冷却点和结冰点的测定表明,西藏飞蝗卵的过冷却点和结冰点为最低,分别为-22.02℃、-16.36℃,4龄蝻的过冷却点和结冰点最高,分别是-6.46℃和-5.05℃,西藏飞蝗在甘孜以卵越冬。Locusta migratoria tibetensis Chen is an important pest of agriculture and animal husbandry in Qinghai- Tibet Plateau. The super-cooling point and freezing point of the L. migratoria tibetensis in each developmental stage were tested. The results indicated that the super-cooling point and freezing point of egg were the lowest among all stages, which was -22.02℃ and - 16.36℃, respectively. The super-cooling point and freezing point of4th instar nymph were the highest among all nymph stages, which were - 6.46℃ and - 5.05℃ respectively. So L. migratoria tibetensis overwinters in egg in Ganzi State, Sichuan.

关 键 词：西藏飞蝗 过冷却点 结冰点 耐寒性 

分 类 号：S433[农业科学—农业昆虫与害虫防治]