Université de Neuchâtel

Species richness and abundance of native leaf miners are affected by the presence of the invasive horse-chestnut leaf miner

Péré, Christelle ; Augustin, Sylvie ; Tomov, Rumen ; Peng, Long-hui ; Turlings, Ted C. J. ; Kenis, Marc

In: Biological Invasions, 2010, vol. 12, no. 5, p. 1011-1021

The effect of the alien horse-chestnut leaf miner, Cameraria ohridella, on native fauna was studied by comparing the species richness of native leaf miner communities and the abundance of selected native leaf miner species in the presence and absence of horse-chestnut trees infested by C. ohridella, in various environments in Europe. The species richness of native leaf miner...

Université de Fribourg

Temporal and spatial variations in the parasitoid complex of the horse chestnut leafminer during its invasion of Europe

Grabenweger, Giselher ; Kehrli, Patrik ; Zweimüller, Irene ; Augustin, Sylvie ; Avtzis, Nikolaos ; Bacher, Sven ; Freise, Jona ; Girardoz, Sandrine ; Guichard, Sylvain ; Heitland, Werner ; Lethmayer, Christa ; Stolz, Michaela ; Tomov, Rumen ; Volter, Lubomir ; Kenis, Marc

In: Biological Invasions, 2010, vol. 12, no. 8, p. 2797-2813

The enemy release hypothesis posits that the initial success of invasive species depends on the scarcity and poor adaptation of native natural enemies such as predators and parasitoids. As for parasitoids, invading hosts are first attacked at low rates by a species-poor complex of mainly generalist species. Over the years, however, parasitoid richness may increase either because the invading host...