David C. Queller

This paper models how different types of environmental change affect adaptation and speciation, finding that biotic conflicts can lead to divergence without reducing hybrid fitness.

This study shows that Dictyostelium discoideum amoebas are innately attracted to more profitable prey bacteria and do not learn from experience to change their preference.

The paper shows that the history of symbiosis affects the evolutionary trajectory of hosts even after symbionts are removed in experimentally evolved amoebas.

The paper shows that {Delta}gacA mutants in Pseudomonas protegens are cheaters whose fitness depends on their abundance, and protozoan predators limit their spread.

The paper tests the coordination hypothesis in Dictyostelium discoideum by mixing evolved clones and measuring developmental traits, finding no evidence of incompatibilities in slug movement but support for incompatibilities between migration and spore production.

This study identifies novel environmental chlamydiae in wild amoebae, revealing their host specificity and expanding the known chlamydial host range.

The paper identifies genes required for predation resistance in three Pseudomonas species associated with Dictyostelium discoideum, revealing conserved and species-specific mechanisms.

The paper shows that obligate cheaters in D. discoideum produce shorter stalks in chimeras, reducing spore dispersal and limiting their success despite available partners.

This study shows that experimentally evolved Dictyostelium discoideum lost traits related to social conflict when selective pressures were removed, suggesting these traits are adaptations to natural social interactions.

The paper investigates predation-resistant Pseudomonas strains and their interactions with Dictyostelium discoideum, finding that some cause extracellular infections and suppress predation of other bacteria.

The paper uses experimental evolution to study microbial symbiosis by evolving microbes in isolation, revealing strain-specific adaptations that suggest historical cooperative or antagonistic interactions.

This study investigates resource-switching and resource-mixing costs in the protist predator Dictyostelium discoideum, showing growth rate reductions when switching or mixing bacterial prey.

The paper examines variation in Dictyostelium discoideum's response to Burkholderia symbionts, finding that natural hosts tolerate their symbionts better than others.