We show that a predator, the tumbling flower beetle Mordellistena convicta (Coleoptera: Mordellidae), has formed host races in response to a host-plant shift and subsequent host-race formation by its prey, the gall-inducing fly Eurosta solidaginis (Diptera: Tephritidae). This fly has formed two host races, one that induces stem galls on the ancestral host plant, Solidago altissima (Compositae),...

Intraspecific variation in plants is driven by both genetic and environmental factors and has been shown to play an important role in determining assemblages of herbivores, predators, and pathogens. Yet, the consequences of genetic (G) and environmental (E) factors, as well as potential (G3E) interactions, for floral visitor communities remains poorly explored. In a common garden experiment, we...

In areas where the tree of heaven (Ailanthus altissima) appears and multiplies, original vegetation degrades transforms. The invasive is also great importance in urban environments, it causes building damage, static problems endangers utilities. Ailanthus pollen concentration was measured during 3-year period (2016-2018) at three county capitals (Szolnok, Debrecen, Nyíregyháza) Northern Great P...

Ailanthus altissima, the invasive forest tree commonly known as tree-of-heaven, has been associated with decreased levels of plant species richness and native diversity. However, this relationship resident plants inconsistently found tree’s influence on seedbank yet to be studied. To further understand long-term impact tree, ten paired invaded-uninvaded sites were identified in Virginia, USA a ...

“One fine morning, the French woke up to discover that a baobab tree had grown in their garden”. Following the last presidential election, in 2012, this was the sentence that opened an article in Le Monde describing the sudden arrival of periurban areas under the media spotlight as a result of the growing electoral success of the Front National (FN; the French National Front). Although this phe...