摘要
通过对不同时期放蜂的放蜂区和不放蜂的对照区组建松突圆蚧自然种群生命表２４个，并对这些生命表采用相关回归分析，指出影响放蜂区松突圆蚧种群数量变动的关键因子是松突圆蚧花角蚜小蜂的寄生，而在对照区松突圆蚧的被捕食则是影响松突圆蚧种群变动的关键因子。
Coccobius azumai Tachikawa was introduced from Japan which controls the pest Hemiberlesia pitysophila Takagi successfully. In this paper, 3 parasitoid released experimental sites, where the parasitoids were released in 1989, 1990 and 1991, respectively, and 1 check site were chosen to construct the life tables of the pest. From the life tables, it was shown that the key factor was the parasitism on the female adults by the parasitoid in the parasitoid released sites, while it was predation of the female adults in check site. The parasitism rate ranged from 3 3%--12 04%, averaged 7 78%.
出处
《昆虫天敌》
CSCD
1998年第4期156-163,共8页
Natural Enemies of Insects
关键词
松突圆蚧
花角蚜小蜂
生命表
寄生作用
Hemiberlesia pitysophila Takagi, Coccobius azumai Tachikawa, life table, parasitism rate
