摘要
通过对黄曲条跳甲自然种群的田间系统调查和室内实验种群的饲养观察 ,组建了以作用因子组配的黄曲条跳甲秋季世代和春季世代自然种群生命表 ,结果表明 :黄曲条跳甲秋季世代和春季世代种群趋势指数 (I)分别为1 4 6 3和 3 86 ,表明下一代种群数量将为当代种群数量的 1 4 6 3和 3 6 8倍 在田间 ,没有发现寄生性天敌 ,春季世代“捕食及其它”的排除作用控制指数 (EIPC)为 1 31 ,表明该作用因子对黄曲条跳甲的控制作用不明显 ,“自然死亡”是影响种群数量发展趋势的重要因子 ,其EIPC =3 1
By the investigate data of population in laboratory and field, the life table of striped flea beetle (SFB) Phyllotreta striolata (Fabricius)was constructed with the affecting factors in spring and autumn. The results showed that the index of population developmental trend(I)of SFB in spring and autumn were 14.63 and 3.86 respectively. There was no parasited enemy of SFB in field; The exclusive index population control(EIPC)of “predator and other factor” was 1.31. It was suggested that the effect of “predator and others ” was not obvious if the factor “predator and others” was excluded. The factor “natural death” was an important one on population development of SFB whose total EIPC was 3.11 in spring and 2 in autumn.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2000年第2期21-24,共4页
Journal of South China Agricultural University
基金
华南农业大学校长基金资助项目! (K980 2 1 )
中国博士点基金资助项目! (95 0 5 0 2 )
广东省自然科学基金资助项目!(980 1 35 )
