【摘 要】
：
A trophic cascade occurs when predators directly decrease the densities,or change the behaviour,of herbivores and thus indirectly increase plant productivity.Th
【机 构】
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XishuangbannaTropicalBotanicalGarden,ChineseAcademyofSciences
【出 处】
：
The 6rd International Symposium of Integrative Zoolog(ISIZ)(
论文部分内容阅读
A trophic cascade occurs when predators directly decrease the densities,or change the behaviour,of herbivores and thus indirectly increase plant productivity.The predator–herbivore–plant context is well known,but some predators attack species beneficial to plants (e.g.pollinators) and/or enemies of herbivores (e.g.parasites),and their role in the dynamics of mutualisms remains largely unexplored.We surveyed the predatory ant species and studied predation by the dominant ant species,the weaver ant Oecophylla smaragdina,associated with the fig tree Ficus racemosa in southwest China.We then tested the effects of weaver ants on the oviposition behaviour of pollinating and non-pollinating fig wasps in an ant-exclusion experiment.
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