Université de Fribourg

A high-density genetic map reveals variation in recombination rate across the genome of Daphnia magna

Dukić, Marinela ; Berner, Daniel ; Roesti, Marius ; Haag, Christoph R. ; Ebert, Dieter

In: BMC Genetics, 2016, vol. 17, p. 137

Recombination rate is an essential parameter for many genetic analyses. Recombination rates are highly variable across species, populations, individuals and different genomic regions. Due to the profound influence that recombination can have on intraspecific diversity and interspecific divergence, characterization of recombination rate variation emerges as a key resource for population...

Université de Fribourg

Local adaptation of sex induction in a facultative sexual crustacean: insights from QTL mapping and natural populations of Daphnia magna

Roulin, Anne C. ; Routtu, Jarkko ; Hall, Matthew D. ; Janicke, Tim ; Colson, Isabelle ; Haag, Christoph R. ; Ebert, Dieter

In: Molecular Ecology, 2013, vol. 22, no. 13, p. 3567–3579

Dormancy is a common adaptation in invertebrates to survive harsh conditions. Triggered by environmental cues, populations produce resting eggs that allow them to survive temporally unsuitable conditions. Daphnia magna is a crustacean that reproduces by cyclical parthenogenesis, alternating between the production of asexual offspring and the sexual reproduction of diapausing eggs (ephippia)....

Université de Fribourg

Strong intraspecific variation in genetic diversity and genetic differentiation in Daphnia magna: the effects of population turnover and population size

Walser, Barbara ; Haag, Christoph R.

In: Molecular Ecology, 2012, vol. 21, no. 4, p. 851–861

Theory predicts that genetic diversity and genetic differentiation may strongly vary among populations of the same species depending on population turnover and local population sizes. Yet, despite the importance of these predictions for evolutionary and conservation issues, empirical studies comparing high-turnover and low-turnover populations of the same species are scarce. In this study, we...