کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4380884 | 1617719 | 2013 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The presence of root-feeding nematodes – Not AMF – Affects an herbivore dispersal strategy The presence of root-feeding nematodes – Not AMF – Affects an herbivore dispersal strategy](/preview/png/4380884.png)
• Aboveground dispersal was assessed in relation to the presence of belowground biota.
• A model system of spider mites (aboveground) and nematodes or AMF (belowground) was used.
• Dispersal behavior increased with the experienced mite density on the host.
• Root feeding nematodes induced an increase of aerial dispersal propensity.
• Belowground herbivores affect population dynamics of aboveground herbivores.
Plant quality and aboveground herbivore performance are influenced either directly or indirectly by the soil community. As herbivore dispersal is a conditional strategy relative to plant quality, we examined whether belowground biotic interactions (the presence of root-feeding nematodes or arbuscular mycorrhizal fungi) affect aerial dispersal of a phytophagous mite (Tetranychus urticae) through changes in performance of their host plant (Phaseolus vulgaris). Aerial dispersal strategies of mites were analyzed in wind-tunnel experiments, in which a unique mite pre-dispersal behavior (rearing) was assessed in relation to the presence of belowground biota on the host plant on which mites developed. Spider mite pre-dispersal behavior significantly increased with the experienced mite density on the host during development. Additionally, plants infected with root-feeding nematodes induced an increase of spider mite aerial dispersal behavior. The results highlight that belowground herbivores can affect population dynamics of aboveground herbivores by altering dispersal strategies.
Journal: Acta Oecologica - Volume 52, October 2013, Pages 38–44