虫瘿内飞出的秋迁蚜到达冬寄主并产幼蚜者,其比例很小,产于冬寄主上的幼蚜也只有一部分能取食而继续生长发育,其中,一部分发育为性母,一部分发育为无翅孤雌成蚜。越冬蚜的死亡率特别高,大约90%以上在一龄若蚜阶段死亡。此种数量变动规律为其遗传特性所决定,环境因子,特别是藓层水分状况对越冬蚜存活的影响也极大。 Aphis gossypii to fall to the winter host and the production of young aphids, the proportion of small, produced in the winter host of aphids only part of the feeding can continue to grow and develop, of which part of the development of the mother, Part of the development of wingless parthenogenetic aphids. Overwintering aphid mortality is particularly high, about 90% of the death in the first instar aphid stage. The change rule of the quantity is determined by its genetic characteristics. The environmental factors, especially the moisture condition of moss layer, have a great influence on the survival of wintering aphids.