Airborne interactions between undamaged plants of different cultivars affect insect herbivores and natural enemies
Airborne interactions between undamaged plants of different cultivars affect insect herbivores and natural enemies
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DOI：
10.1007/s11829-009-9072-9
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发表时间：
2009-12-01
影响因子：
1.6
通讯作者：
Pettersson, Jan
中科院分区：
文献类型：
--
作者：
Glinwood, Robert;Ahmed, Elham;Pettersson, Jan
研究了不同大麦品种间的气传相互作用对禾谷缢管蚜、七星瓢虫和麦蚜行为的影响。在某些品种组合中，暴露的一个品种的空气通过一个不同的品种导致大麦蚜虫接受减少和瓢虫和寄生虫的吸引力增加。寄生蜂攻击蚜虫已开发的暴露下的植物比那些从未暴露的植物，导致更高的寄生率。瓢虫，但不是寄生蜂，更吸引组合气味从某些大麦品种比单独的品种。结果表明，未受损的植物之间的空气中的相互作用，可以影响更高的营养水平，不同基因型的相同的植物物种之间的气味差异可能足以影响天敌的行为。
This study investigated the effects of airborne interaction between different barley cultivars on the behaviour of bird cherry-oat aphid Rhopalosiphum padi, the ladybird Coccinella septempunctata and the parasitoid Aphidius colemani. In certain cultivar combinations, exposure of one cultivar to air passed over a different cultivar caused barley to have reduced aphid acceptance and increased attraction of ladybirds and parasitoids. Parasitoids attacked aphids that had developed on plants under exposure more often than those from unexposed plants, leading to a higher parasitisation rate. Ladybirds, but not parasitoids, were more attracted to combined odours from certain barley cultivars than either cultivar alone. The results show that airborne interactions between undamaged plants can affect higher trophic levels, and that odour differences between different genotypes of the same plant species may be sufficient to affect natural enemy behaviour.