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Identifying the drivers of abundance of Philaenus spumarius in Corsica

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Chartois, Marguerite | Mesmin, Xavier | Quiquerez, Ileana | Borgomano, Sabrina | Rossi, Jean-Pierre | Rasplus, Jean‐Yves | Cruaud, Astrid

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International audience. Philaenus spumarius (Hemiptera: Aphrophoridae) is a major vector of Xylella fastidiosa (Xf) in Europe. However, the drivers influencing its abundance are still poorly known. In Corsica from 2018 to 2020, we monitored the abundance of P. spumarius three times a year in 64 permanent plots distributed along vegetation and altitudinal (0-600m) gradients. The vegetation gradient ranged from shrubland to oak forest and accounted for the density of Cistus monspeliensis on which P. spumarius usually develops and feed in Corsica. Abundance of P. spumarius was estimated through visual counting of foams and sweep netting of adults. Both vegetation composition and climate descriptors were recorded at each sampling location. We used partial least squares path modelling and generalized linear mixed models to unravel the relationships between vegetation/climate descriptors and P. spumarius abundance...

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