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Université de Fribourg

Rapid evolution of invasive traits facilitates the invasion of common ragweed, Ambrosia artemisiifolia

Sun, Yan ; Roderick, George K.

In: Journal of Ecology, 2019, vol. 107, no. 6, p. 2673–2687

Invasive alien plants, together with organisms introduced for biological control, are ideal study systems with which to address questions of whether, and how fast, organisms adapt to changing environments. We compared populations of common ragweed, Ambrosia artemisiifolia, from native (USA) and introduced (China) ranges at similar latitudes, together with herbivores introduced for biological...

Université de Fribourg

The effects of mutualistic ants on aphid life history traits

Flatt, Thomas ; Weisser, Wolfgang W.

In: Ecology, 2000, vol. 81, no. 12, p. 3522-3529

The relationship between homopterans and ants is generally thought to be mutualistic, as both partners seem to benefit from an association. In aphids, previous studies have shown that ant tending improves the survival and reproduction of aphid colonies, mainly by protection of aphids from enemy attack. However, the effects of ant tending on the fitness of individual aphids have rarely been...

Consortium of Swiss Academic Libraries

Alternative life-histories in a socially polymorphic ant

Rosset, Hervé ; Chapuisat, Michel

In: Evolutionary Ecology, 2007, vol. 21, no. 5, p. 577-588

Consortium of Swiss Academic Libraries

Apparent facilitation of an invasive mealybug by an invasive ant

Helms, K. ; Vinson, S.

In: Insectes Sociaux, 2003, vol. 50, no. 4, p. 403-404