N. Kolm

Social complexity affects cognitive abilities but not brain structure in a Poecilid fish

The study shows that living in larger social groups improves cognitive flexibility in guppies, without affecting brain structure.

Functional convergence of genomic and transcriptomic genetic architecture underlying sociability in a live-bearing fish

The paper investigates the genetic basis of sociability in guppies using quantitative genetics and transcriptomics, finding convergent genomic and transcriptomic signatures related to synaptic function and calcium signaling.

Changes driven by the evolution of higher group polarization in the guppy are consistent across different predation pressures and associated with neuroanatomical changes

The paper shows that guppies selected for higher group polarization maintain this behavior under predation and exhibit neuroanatomical changes linked to improved sensory processing.

Artificial mosaic brain evolution of relative telencephalon size improves cognitive performance in the guppy (Poecilia reticulata)

This study shows that artificially selected guppies with larger relative telencephalon size outperformed those with smaller telencephalon in a detour task, indicating a cognitive benefit from increased telencephalon size.

Rapid mosaic brain evolution under artificial selection for relative telencephalon size in the guppy (Poecilia reticulata)

This study shows that artificial selection on telencephalon size in guppies leads to changes in that brain region without affecting other regions, supporting mosaic brain evolution.

Rapid evolution of coordinated and collective movement in response to artificial selection

This study shows that artificial selection on guppies rapidly increases social coordination and collective movement traits.

Sex-biased gene expression resolves sexual conflict through the evolution of sex-specific genetic architecture

The paper uses transcriptome data from guppies to show that sexual conflict is resolved through male-biased gene expression and sex-specific genetic architecture.