Nonlethal indirect effects of a native predatory mite, Amblyseius womersleyi Schicha (Acari:Phytoseiidae), on the phytophagous mite Tetranychus kanzawai Kishida (Acari: Tetranychidae)

被引:0
|
作者
Keiko Oku
Shuichi Yano
Akio Takafuji
机构
[1] Kyoto University,Laboratory of Ecological Information, Graduate School of Agriculture
来源
Journal of Ethology | 2004年 / 22卷
关键词
Nonlethal indirect effects; Direct effects; Fitness;
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学科分类号
摘要
We experimentally tested the indirect and direct effects of Amblyseius womersleyi on Tetranychus kanzawai. The presence of A. womersleyi indirectly reduced egg production of T. kanzawai by 25.9%, although this effect had less impact than direct egg predation. The mechanism of this indirect effect could be explained by behavioral changes in T. kanzawai females; in the presence of A. womersleyi, T. kanzawai females allocated more time to seeking refuge on webs at the expense of feeding on leaves.
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页码:109 / 112
页数:3
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