肚倍蚜的生物学研究 Ⅲ.种群数量变动  

Biological Studies on the Du-ensiform Gall Aphid, Kaburagia rhusicola I . Population Dynamics

作　　者：赖永祺[1] 张燕平[1] 方英[1] 焦懿[1] 李正洪[1] 陈宝珊 

机构地区：[1]中国林业科学研究院资源昆虫研究所

出　　处：《林业科学研究》1993年第2期151-156,共6页Forest Research

基　　金：加拿大国际发展研究中心(IDRC)资助

摘　　要：本文报道肚倍蚜各虫型及同虫型各世代的发生数量及瘿内、瘿外时期的数量变动。据1990～1992年的研究结果,该蚜近3个月的瘿内时期,数量增长3000多倍,而瘿外时期又激剧下降。倍子体积的增长与瘿内蚜量成正相关。同批倍蚜跨年度完成生活史,有的一年,有的两年甚至更长。头年至翌年春,侨蚜的存活率为0.3％～1.5％;其中,性母约占40％,羽化后完成生活史,使虫口数量增长40～180倍。第二年至第三年春在冬寄主上的侨蚜仅存活0.01％,羽化的性母比例更低,于种群增长无意义,在生产上应利用一年完成生活史的虫群。Du-ensiform gall caused by Du-ensiform gall aphid, Kaburagia rhusicola on a sumac tree, Rhus potaninii, is one of the important Chinese gallnuts in China. The population of the aphids in the gall grows rapidly, increasing as much as 3 000 times in about 3 months. But it drops sharply out of the gall owing to the high mortality and low vitality. The aphids from the same gall can complete their life history in a year or two years or even more. Although the survival rate of those individuals which finish their life history in a year is about 0.3%~1.5% of the total nymphs inoculated on the second hosts, mosses, in the last year, the population can increase as much as 40~180 times. The individuals which complete life history in two years as a result of extremely high mortality on the second hosts grows poorly. So people have to make good use of the individuals finishing their life history in a year and manage to reduce mortality of the aphid during overwintering on the second hosts to obtain a high yield of the gall.

关 键 词：肚倍蚜 五倍子 种群 

分 类 号：S759.73[农业科学—森林经理学]