THE INFLUENCE OF APHIDS AND HONEYDEW ON THE LEAVING RATE OF SEARCHING APHID PARASITOIDS FROM WHEAT PLANTS
THE INFLUENCE OF APHIDS AND HONEYDEW ON THE LEAVING RATE OF SEARCHING APHID PARASITOIDS FROM WHEAT PLANTS
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DOI：
10.1007/bf00192774
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发表时间：
1992-06-01
影响因子：
1.9
通讯作者：
CLARK, SJ
中科院分区：
文献类型：
--
作者：
BUDENBERG, WJ;POWELL, W;CLARK, SJ
采用散放笼法研究了麦蚜和人工蜜露处理对麦蚜茧蜂在小麦植株群体中搜索雌蜂离开率的影响。从放置在笼子中心的植物群飞离的寄生虫被困在笼子的侧面和顶部，从而防止返回植物。被诱捕的寄生蜂的位置暗示了它们从植物中扩散时的飞行方向。寄生蜂增加了他们的停留时间组的植物中存在的蚜虫和人工蜜露，但寄生率的主机麦长管蚜的存在下，人工蜜露的实验条件下使用的不提高。大多数拟寄生虫的飞行方向表明，它们离开植物是为了找到附近的更多植物以继续搜索，而不是终止搜索并远离该地区。强调在寄生蜂搜索行为的研究中需要考虑植物斑块的大小。
Dispersal cages were used to investigate the effects of aphids and treatment with artificial honeydew on the leaving rate of searching females of the parasitoid Aphidius rhopalosiphi from groups of wheat plants. Parasitoids which flew away from groups of plants placed in the centre of a cage were trapped on the sides and roof of the cage and thus were prevented from returning to the plants. The positions of trapped parasitoids suggested their direction of flight when dispersing from the plants. Parasitoids increased their residence times on groups of plants in the presence of aphids and of artificial honeydew, but the rate of parasitism of the host Sitobion avenae was not raised by the presence of artificial honeydew under the experimental conditions used. The direction of flight taken by the majority of parasitoids suggested that they were leaving the plants in order to locate further plants nearby to continue searching rather than to terminate searching and disperse away from the area. The need to consider plant patch size in studies of parasitoid searching behaviour is stressed.