角倍蚜瘿内世代生物学及角倍生长的初步研究

角倍蚜Schlechtendalia chinensis(Bell)在盐肤木Rhus chinensis Mill.上所形成的倍子(即角倍)约占全国五倍子总量的80％,经济价值很大。该倍蚜的生活周期属异寄主全周期型,虫型多样,生活习性复杂。在其生活年史中,春季有翅孤雌蚜(春迁蚜),迁飞到第一害主盐肤木上产雌雄性蚜,经一月左右(一般在夏初),雌蚜生殖,产下的干母爬到嫩叶上取

PRELIMINARY STUDIES ON THE BIOLOGY OF HORNED GALL APHID IN THE GALL AND THE GROWTH OF THE GALL

One of the Chinese gallnuts is the gall caused by horned gall aphid, Schlechtendalia chinensis (Bell), which amounts to about 80 per cent of the total output of gallnuts. Life of the aphid in the gall lasted some 4.5-5 months with three forms and four generations, stem-mother, two generations of apterous female, and autumn-form winged viviparous female. The gall grows gradually with an increase in quantity of the aphids, and the increase of aphids has been doubled and redoubled during the period from the beginning to the end of the reproduction of two generations of papterous viviparous female but the growth of the gall does not do so. In the later stage of growth of the gall, though the number of the aphids increases a little, sometimes even does not increase any more, the gall grows speedily still. Therefore, the longer the growth period, the bigger the gall size before natural burst of the gall.