Oliver Kaltz

Adaptation to complex environments is associated with higher fitness costs under benign conditions

This study shows that adaptation to complex environments with multiple stressors leads to lower fitness gains and higher fitness reductions under benign conditions compared to single stressors.

Differing effects of parasite-parasite interaction types on the spatial epidemiology of co-circulating parasites

This study shows that parasite-parasite interactions affect spatial epidemiology, with within-host interactions having the strongest impact on prevalence and spread.

Evolution at experimental epidemic fronts speeds up parasite spread

This study shows that parasites at the front of an epidemic evolve higher infectivity and lower virulence, which accelerates epidemic spread when host dispersal is limited.

Co-evolution of host dispersal and parasite virulence in complex landscapes.

The paper develops an eco-evolutionary model to study how host dispersal and parasite virulence co-evolve in different landscapes, finding landscape-specific patterns influenced by network topology.

Heritable variation in resistance to the endonuclear parasite Holospora undulata across clades of Paramecium caudatum

The paper investigates heritable variation in resistance to the parasite Holospora undulata across Paramecium caudatum strains, finding substantial genetic variation and geographic patterns of resistance.

An evolutionary trade-off between parasite virulence and dispersal at experimental invasion fronts

This study shows parasites at the front of an epidemic evolve lower virulence and less horizontal transmission investment, suggesting a trade-off between virulence and host dispersal.

Bottom-up and top-down control of dispersal across major organismal groups: a coordinated distributed experiment

The paper tests how bottom-up and top-down controls affect dispersal across species and shows their impacts on community dynamics.

Antibiotic Stress Selects against Cooperation in a Pathogenic Bacterium

The paper shows antibiotic stress reduces public goods production in Pseudomonas aeruginosa by favoring non-producers, which have higher survival and resistance.