Species biology and demographic history determine species vulnerability to climate change in tropical island endemic birds

This study demonstrates that species traits, particularly diet specialization and body size, along with historical demographic patterns, dictate the vulnerability of tropical island endemic birds to climate change, revealing that most entered the Holocene with low effective population sizes and highlighting the need to integrate these factors into conservation strategies.

Karjee, R., Iyer, V., Chatterjee, D. + 3 more2026-03-25📄 evolutionary biology

Genetic architectures of brain-related traits are shaped by strong selective constraints

This study reveals that brain-related traits, including psychiatric disorders, exhibit distinct genetic architectures characterized by weaker GWAS associations and higher allele frequencies due to strong selective constraints acting on their large mutational target sizes, suggesting that the tissues mediating complex traits fundamentally shape their genetic underpinnings.

Zhu, H., Simons, Y. B., Spence, J. P. + 2 more2026-03-25📄 evolutionary biology

Biodiversity dynamics with complex genotype-to-phenotype architecture in multilayer networks

This study demonstrates that the architecture linking genotypes to phenotypes—specifically whether traits evolve in a correlated or modular fashion—fundamentally constrains biodiversity patterns by acting as a critical filter that determines species coexistence and persistence across varying regimes of selection, migration, and environmental or biotic pressures.

Melian, C. J., Andreazzi, C. S., Astegiano, J. + 14 more2026-03-25📄 evolutionary biology

Replaying the Tape: Comparative Genomics of Color Pattern in Heliconius

By integrating automated image-based phenotyping with comparative pan-genomics, this study reveals that convergent wing color patterns in *Heliconius erato* and *H. melpomene* arise through distinct, lineage-specific genetic variants acting within conserved regulatory architectures, demonstrating how repeated adaptive outcomes can emerge via different molecular paths.

Lawrence, C. G., Rubenstein, D., McMillan, O. + 1 more2026-03-25📄 evolutionary biology

Aridification and habitat shifts drove diversification in Australian diplodactylid geckos

This study utilizes a comprehensive genomic dataset to demonstrate that the diversification of Australian diplodactylid geckos was driven by mid-Eocene origins in mesic environments followed by repeated transitions into arid habitats, which generated ecological opportunities for morphological divergence and lineage expansion across the continent.

Tiatragul, S., Brennan, I. G., Skeels, A. + 4 more2026-03-25📄 evolutionary biology

Evolutionarily informed gene sets reveal conserved and lineage-modified transcriptional programs during vertebrate forebrain evolution

By developing an evolutionarily informed gene-set framework to analyze single-cell data across eleven vertebrate species, this study reveals that forebrain evolution proceeds through lineage-specific tuning of deeply conserved transcriptional programs within stable cellular architectures rather than the emergence of entirely new cell types.

He, H., Streelman, J. T., Qiu, P.2026-03-25📄 evolutionary biology

Enrichment Probe Sets Combining Universal and Lineage-Specific Targets Help Resolve Recalcitrant Lineages

To resolve the phylogenetic relationships within the recalcitrant clusioid clade of Malpighiales, researchers developed the Clusioids626 probe set by combining universal Angiosperms353 targets with 273 lineage-specific nuclear orthologs, which successfully outperformed the universal panel alone in generating high-resolution nuclear and plastid data while revealing significant cyto-nuclear conflicts.

Villa-Machio, I., Masa-Iranzo, I., Nürk, N. M. + 2 more2026-03-25📄 evolutionary biology

Evolution of virulence of a plant RNA virus in age-diverse host populations

This study demonstrates that host age structure acts as a primary ecological driver of plant virus evolution, experimentally showing that diverse demographic regimes in *Arabidopsis thaliana* populations select for distinct viral strategies regarding disease timing, severity, and host-stage specialization through both parallel and demography-specific genomic changes.

Carrasco, J. L., Toft, C., Elena, S. F.2026-03-25📄 evolutionary biology

Comparison of the Distribution of Fitness Effects Across Primates

By analyzing the distribution of fitness effects across 38 catarrhine primates, this study demonstrates that interspecific differences in deleterious mutations are primarily driven by variation in effective population size rather than clade-specific factors, supporting the nearly neutral theory and confirming the robustness of these findings to demographic history and dominance effects.

Sendrowski, J., Pedersen, B. M., Bergman, J. + 2 more2026-03-25📄 evolutionary biology

Function-specific epistasis shapes evolutionary trajectories towards antibiotic resistance

This study demonstrates that while antibiotic resistance evolution is generally predictable across most genetic backgrounds, specific disruptions to cellular functions induce idiosyncratic, function-specific epistasis that alters evolutionary trajectories and often slows resistance development, offering a potential strategy to improve treatments through targeted inhibitors.

Petrungaro, G., Fink, T., Fernando, B. + 2 more2026-03-24📄 evolutionary biology