Sebastian Chmielewski

Adam Mickiewicz University | UAM · Institute of Environmental Biology

The rate and chromosomal positioning of meiotic recombination significantly affects the distribution of the genetic diversity in eukaryotic genomes. Many studies have revealed sex-specific recombination patterns, with male recombination typically biased toward chromosome ends, while female recombination is more evenly distributed along chromosomes,...

Wolbachia is a widespread bacterial endosymbiont and its maternal transmission favours the selfish manipulation of host reproduction to increases in frequency. One such manipulation is cytoplasmic incompatibility (CI), where uninfected female’s eggs fail to hatch when fertilised by an infected male. If variation in infection rates and CI strength e...

Sexual selection and sexual antagonism are important drivers of eco-evolutionary processes. The evolution of traits shaped by these processes depends on their genetic architecture, which remain poorly studied. Here, implementing a quantitative genetics approach using diallel crosses of the bulb mite, Rhizoglyphus robini, we investigated the genetic...

The evolution of costly traits such as deer antlers and peacock trains, which drove the formation of Darwinian sexual selection theory, has been suggested to both reflect and affect patterns of genetic variance across the genome, but direct tests are missing. Here, we used an evolve and resequence approach to reveal patterns of genome-wide diversit...

Background The information about the magnitude of between-individual differences in thermal plasticity and identification of the underlying molecular mechanisms are key to understand the evolution of thermal plasticity. In particular, genes underlying variation in the physiological response to temperature can provide raw material for selection acti...

Natural host populations differ in their susceptibility to infection by parasites, and these intra‐population differences are still an incompletely understood component of host‐parasite dynamics. In this study, we used controlled infection experiments with wild‐caught guppies (Poecilia reticulata) and their ectoparasite Gyrodactylus turnbulli to in...

Natural host populations differ in their susceptibility to infection by parasites, and these intra-population differences are still an incompletely understood component of host-parasite dynamics. In this study, we used controlled infection experiments with wild-caught guppies (Poecilia reticulata) and their ectoparasite Gyrodactylus turnbulli to in...

Determining the molecular basis of parasite adaptation to its host is an important component in understanding host‐parasite coevolution and the epidemiology of parasitic infections. Here, we investigate short‐ and long‐term adaptive evolution in the eukaryotic parasite, Gyrodactylus bullatarudis, infecting Caribbean guppies (Poecilia reticulata), b...

Water bears (Tardigrada) are known as one of the most extremophile animals in the world. They inhabit environments from the deepest parts of the oceans up to the highest mountains. One of the most extreme and still poorly studied habitats which tardigrades inhabit are cryoconite holes. We analysed the relation between area, depth, elevation and tar...