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Plant species, mycorrhiza, and aphid age influence the performance and behaviour of a generalist [Ecological Entomology]

Keywords : arbuscular mycorrhiza, behaviour, extrinsic and intrinsic variables, Myzus persicae

par Frédéric Magné - publié le , mis à jour le

1. Life-history traits of herbivores are shaped by the combination of various extrinsic and intrinsic variables. However, studies investigating the impact of both variables on insect behavioural phenotypes are rare, and research including the modulation of host plant quality by arbuscular mycorrhiza (AM) (extrinsic variable) and the herbivore developmental stage (intrinsic variable) on aphid behaviour is lacking.
2. To study the influences of extrinsic and intrinsic variables on aphid performance and behaviour, individuals of the generalist aphid pest Myzus persicae (Sulzer) were reared on Plantago lanceolata and Poa annua plants that were either non-mycorrhized (NM) or mycorrhized (AM). Aphid performance was monitored over 2 weeks.(...)

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