摘要
运用生态位理论,对甘肃省甘南和临夏两地春油菜田的桃蚜(Myzus persicae)、萝卜蚜(Lipaphis erysi-mi)和甘蓝蚜(Brevicoryne brassicae)在时间、空间资源序列上的生态位指数进行了估测和分析.结果表明:桃蚜不仅比其它蚜虫能较广泛地利用寄主资源,而且在时间序列上也占有较大优势,具有较强的竞争优势.在甘南油菜田,桃蚜和萝卜蚜、桃蚜和甘蓝蚜之间竞争激烈,具有较大的生态位重叠.在临夏油菜田,甘蓝蚜和萝卜蚜在时间生态位和时-空生态位重叠较大,桃蚜和萝卜蚜在时间生态位重叠较大,但甘蓝蚜与萝卜蚜之间竞争表现得更为激烈.
To understand the interspecific relationships among common rape aphids species , systematic analysis of the niche breadth and niche overlap of Myzus persicae （Sulzer）, Lipaphis erysimi （Kaltenbach） and Brevicoryne brassicae （Linnaeus） on spring sowing rape were carried out during 2007 in Linxia and Gannan, two administrative districts of Gansu Province. The results indicated that M. persicae could use more host resources by comparison with other tWO species, and had the greatest temporal niche. In Gannan, two species pairs, M. persicae with L. erysimi, M. persicae with B. brassicae, had greater niche overlap, and displayed fierce competition. However, in Linxia, the species pair of B. brassicae with L. erysimi had greatest niche overlap in both temporal and tempo-spatial niches than the species pair of M. persicae with L. erysimi.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2009年第1期111-114,共4页
Journal of Gansu Agricultural University
基金
甘肃省农业综合开发办资助
