摘要
西宁地区寄生油菜蚜虫的蚜茧蜂的优势种是菜蚜茧蜂(Diaeretiella rapae M’lntosh),占83.9％;田间寄生率以桃蚜(Myzus persicae Sulzer)最高,萝卜蚜(Lipaphis erysimi(Kaitenbach))次之,甘蓝蚜(Brevicoryne brassicae (Linne))最低;蚜茧蜂卵的孵化率最高100％,平均为84.43％;雌雄性比为1.263:1.
Diaeretiella rapae M'lntosh is dominant species of aphidius on rape aphid in Xining area, account for 83. 9% of the total. The parasitism rate of aphidius. is highest in the Myzus persicae sulzer in three rape Aphids Then is in the Lipaphis erysimi (kalitenbach) , the lowest is in the Brevicoryne brassicae(Linne). The highest incubation rate of aphidius's eggs is 100%, average is 84. 43%; The sex of femal and male is in a ratio of about 1,253 : 1.
出处
《青海大学学报（自然科学版）》
1997年第1期14-17,共4页
Journal of Qinghai University(Natural Science)
