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Habitat variation, mutualism and predation shape the spatio-temporal dynamics of tansy aphids [Ecological Entomology]

Keywords : colonisation, extinction, interaction, Metopeurum fuscoviride, mutualist, predator

par Frédéric Magné - publié le , mis à jour le

1. Spatially distributed resources can lead to the formation of metapopulations, where individual subpopulations are often small and can experience frequent local extinction events followed by recolonisation. An example of terrestrial metapopulations are specialised phytophagous insects on their patchily distributed host plants.
2. The present study investigated the population dynamics of a specialised aphid (Metopeurum fuscoviride) on its patchily distributed host plant (Tanacetum vulgare) and associated community of mutualistic ants and predators in a small-scale field site. Furthermore, aphid habitat differences (plant size, C/N ratio, location and surrounding vegetation) were quantified, and seasonal timing and precipitation were considered.(...)

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