栗瘿蜂的生物学研究

本文报道了栗瘿蜂的生物学特性,栗瘿蜂对板栗树的危害特征.栗瘿蜂是板栗树的寄生昆虫,以取食栗树嫩芽为生。栗树嫩芽受害形成虫瘿,不能开花结实,直接影响板栗产量。栗瘿蜂的数量变动主要与降雨、天敌、寄主种类等有关。调查表明,在滇中地区,栗瘿长尾小蜂是栗瘿蜂的主要天敌,对栗瘿蜂种群起到一定控制作用.

The Study on the Bionomics of the Chestnut Gall Wasp(Dryocosmus Kuriphilus Yasumatsu)

The bionomics of the chestnut gall wasp, Dryocosmus kuriphilus, and the gall wasp feature injurious to the chestnut trees were reported. The chestnut gall wasp is a specialized parasitic insect, lived on the chestnut buds. The buds of the chestnut tree, which injured by the gall wasps, can grow shoots and get seeds, and will grow ball-like galls in next spring. This lead up to a poor production of the chestnuts. The population dynamics of the chestnut gall wasp is affected by rainfall, natural-enemys, and its host. Investigation showed that, in the centre of Yunnan province, Torymus sp. is a chief natural-enemy to the chestnutgall wasp, and has a good ability to control over its population.