evolutionary biology papers

Evolutionary biology explores the dynamic history of life on Earth, tracing how species change, adapt, and diversify over time. This field investigates the mechanisms driving everything from the development of antibiotic resistance in bacteria to the complex social behaviors of primates, revealing the deep connections that bind all living organisms together.

On Gist.Science, we ensure these groundbreaking discoveries remain accessible by processing every new preprint uploaded to bioRxiv in this category. Our team generates both plain-language overviews and detailed technical summaries for each paper, bridging the gap between raw research and public understanding without requiring a specialized background.

Below are the latest studies in evolutionary biology, offering fresh insights into the ongoing story of life.

📄 evolutionary biology

Darwinian fitness, its directional derivative, and Hamilton's rule for limited dispersal with class structure under within and between generation environmental stochasticity

This paper formalizes Darwinian invasion fitness and its phenotypic derivative for group-structured populations under limited dispersal and environmental stochasticity, demonstrating how Hamilton's marginal rule can be derived as an actor-centered inclusive-fitness effect that integrates class-specific fitness differentials, relatedness, and reproductive values.

Lehmann, L.2026-05-24

📄 evolutionary biology

Understanding the emergence of the influenza A/H3N2 K subclade in its historical and evolutionary context

This study reveals that the 2025/26 emergence of the genetically distinct influenza A/H3N2 K subclade was driven by selection for non-antigenic properties rather than significant antigenic change, and that vaccine-induced immune responses to this strain are age-dependent and shaped by vaccination history.

Dee, K., Imrie, R., MacLean, O., Mojsiejczuk, L., Smith, E., Raveendran, S., Lamb, K., Chen, H., Schultz, V., Wang, Z. (…)2026-05-24

📄 evolutionary biology

Drosophila-virus genotype interactions dominate transmission, virulence and load, eroding additive fitness variance

By combining coevolutionary modeling with large-scale experimental assays in *Drosophila* and sigma virus, this study demonstrates that host-virus genotype-by-genotype interactions overwhelmingly dominate transmission, virulence, and viral load, thereby masking additive genetic variance and maintaining cryptic heritable variation that is only revealed when ecological or evolutionary conditions shift.

Belyi, A., Du, Y., Wilson, A. J., Longdon, B., Jiggins, F. M.2026-05-24

📄 evolutionary biology

Pyrethroid Resistance Status and Multiple kdr Mutations (F1534C/L) in Aedes aegypti Populations from Zika-prone Areas in Lamu County, Kenya

Aedes aegypti populations in Zika-prone areas of Lamu County, Kenya, exhibit very high resistance to permethrin and varying resistance to other pyrethroids, driven by the F1534C mutation, which threatens current vector control strategies and necessitates alternative approaches for arbovirus prevention.

Thiiru, J. W., Ochieng, R., Kerich, G., Achieng, E., Ambale, J., Yalwala, S., Kioko, E., Oullo, D., Waga, C., Isabella (…)2026-05-23

📄 evolutionary biology

PUPAL COLOUR PLASTICITY AS A STRATEGY AGAINST DESICCATION

This study demonstrates that in the butterfly *Eurema blanda*, pupal colour plasticity serves as a crucial adaptation against desiccation, where browner, melanised pupae induced by off-leaf substrates exhibit higher survival rates under drying conditions through physiological mechanisms rather than reduced water loss.

Sharma, B. B., Rajpurohit, S., Kodandaramaiah, U.2026-05-21

📄 evolutionary biology

Are seasonally plastic anti-predatory and desiccation tolerance traits developmentally linked?

This study demonstrates that in the butterfly *Mycalesis mineus*, developmental plasticity induced by dry season conditions simultaneously enhances desiccation tolerance and reduces ventral eyespot size, suggesting that these distinct anti-predatory and physiological traits are developmentally linked.

Sharma, B. B., Kodandaramaiah, U.2026-05-21

📄 evolutionary biology

Substitution rate variation, not hidden paralogy, drives false hybridization signal in phylogenetic network inference

This simulation study demonstrates that substitution rate variation, rather than hidden paralogy, is the primary driver of false hybridization signals in phylogenetic network inference, particularly biasing the find_graphs method and necessitating empirical calibration of statistical thresholds.

Li, B., Ane, C.2026-05-18

📄 evolutionary biology

Root-level loss of immunoglobulin and B-cell immune genes in clingfishes

This study reveals that the clingfish family (Gobiesocidae) has undergone a root-level loss of canonical immunoglobulin genes and associated B-cell immune components, while retaining key T-cell and RAG genes, indicating a unique evolutionary erosion of the humoral immune axis rather than a complete loss of adaptive immunity.

Gambon Deza, F.2026-05-18

📄 evolutionary biology

Female reproductive fluid evolves rapidly to favor conspecific sperm

This study demonstrates that female reproductive fluid in swordtails can rapidly evolve to bias fertilization toward conspecific sperm, serving as a potent postmating mechanism for reproductive isolation, particularly in species like *X. malinche* that lack strong premating barriers against hybridization.

Pinzoni, L., Morbiato, E., Dorsey, O. C., Hernandez Melo, J., Devigili, A., Gasparini, C., Rosenthal, G.2026-05-16

📄 evolutionary biology

Obligate multicellularity circumvents population genetic barriers to collective-level adaptation

Using experimental evolution with engineered snowflake yeast, this study demonstrates that obligate multicellularity overcomes fundamental population genetic barriers—specifically genetic drift and conflicting selection pressures—that otherwise constrain collective-level adaptation in facultative life cycles, thereby explaining why complex multicellularity has evolved exclusively in obligately multicellular lineages.

Peterson, A., Burnetti, A. J., Libby, E., Campbell, J., Ratcliff, W.2026-05-15

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