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Université de Fribourg

The evolutionary genetics of canalization

Flatt, Thomas

In: The Quarterly Review of Biology, 2005, vol. 80, no. 3, p. 287-316

Evolutionary genetics has recently made enormous progress in understanding how genetic variation maps into phenotypic variation. However, why some traits are phenotypically invariant despite apparent genetic and environmental changes has remained a major puzzle. In the 1940s, Conrad Hal Waddington coined the concept and term “canalization” to describe the robustness of phenotypes to...

Université de Fribourg

Phenotypic variation in an oviparous montane lizard (Bassiana duperreyi): the effects of thermal and hydric incubation environments

Flatt, Thomas ; Shine, Richard ; Borges-Landaez, Pedro A. ; Downes, Sharon J.

In: Biological Journal of the Linnean Society, 2001, vol. 74, no. 3, p. 339-350

Recent studies have shown that incubation temperatures can profoundly affect the phenotypes of hatchling lizards, but the effects of hydric incubation environments remain controversial.We examined incubation-induced phenotypic variation in Bassiana duperreyi (Gray, 1938; Sauria: Scincidae), an oviparous montane lizard from south-eastern Australia. We incubated eggs from this species in four...

Université de Fribourg

Phenology and temperature‐dependent development of Ceutorhynchus assimilis, a potential biological control agent for Lepidium draba

Virag, A. von ; Bon, M.C. ; Cloşca, C. ; Diaconu, Alecu ; Haye, T. ; Weiss, R. M. ; Müller-Schärer, Heinz ; Hinz, H. L.

In: Journal of Applied Entomology, 2017, vol. 141, no. 3, p. 219–230

Lepidium draba (Brassicaceae) is a major concern for agriculture and biodiversity in the western United States. As current control methods do not provide long-term, sustainable solutions, research has been conducted to find biological control agents. Ceutorhynchus assimilis is one of the currently investigated candidates. Known as oligophagous in the literature, a specialist clade of this...

Université de Fribourg

Alien plant species with a wider global distribution are better able to capitalize on increased resource availability

Dawson, Wayne ; Rohr, Rudolf P. ; Kleunen, Mark van ; Fischer, Markus

In: New Phytologist, 2012, vol. 194, no. 3, p. 859–867

A high ability of alien plant species to capitalize on increases in resource availability has been suggested as an explanation for being globally successful. Here, we tested this hypothesis meta-analytically using existing data from experiments manipulating plant resources (light, water and nutrients).From these studies we extracted the response to resource increase of biomass, as an indicator of...