Field cricket genome reveals the footprint of recent, abrupt adaptation in the wild

Sonia Pascoal, Judith E. Risse, Xiao Zhang, Mark Blaxter, Timothee Cezard, Richard J. Challis, Karim Gharbi, John Hunt, Sujai Kumar, Emma Langan, Xuan Liu, Jack G. Rayner, Michael G. Ritchie, Basten L. Snoek, Urmi Trivedi, Nathan W. Bailey

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Evolutionary adaptation is generally thought to occur through incremental mutational steps, but large mutational leaps can occur during its early stages. These are challenging to study in nature due to the difficulty of observing new genetic variants as they arise and spread, but characterizing their genomic dynamics is important for understanding factors favoring rapid adaptation. Here, we report genomic consequences of recent, adaptive song loss in a Hawaiian population of field crickets (Teleogryllus oceanicus). A discrete genetic variant, flatwing, appeared and spread approximately 15 years ago. Flatwing erases sound‐producing veins on male wings. These silent flatwing males are protected from a lethal, eavesdropping parasitoid fly. We sequenced, assembled and annotated the cricket genome, produced a linkage map, and identified a flatwing quantitative trait locus covering a large region of the X chromosome. Gene expression profiling showed that flatwing is associated with extensive genome‐wide effects on embryonic gene expression. We found that flatwing male crickets express feminized chemical pheromones. This male feminizing effect, on a different sexual signaling modality, is genetically associated with the flatwing genotype. Our findings suggest that the early stages of evolutionary adaptation to extreme pressures can be accompanied by greater genomic and phenotypic disruption than previously appreciated, and highlight how abrupt adaptation might involve suites of traits that arise through pleiotropy or genomic hitchhiking.
Original languageEnglish
Pages (from-to)19-33
JournalEvolution Letters
Volume4
Issue number1
DOIs
Publication statusPublished - 1 Feb 2020

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  • Datasets

    SBfI RADseq of Teleogryllus oceanicus F3 cross between Daintree and Kailua flat-wing crickets

    Pascoal, S. (Creator), Risse, J. (Creator), Zhang, X. (Creator), Blaxter, M. (Creator), Cezard, T. (Creator), Gharbi, K. (Creator), Hunt, J. (Creator), Kumar, S. (Creator), Langan, E. (Creator), Liu, X. (Creator), Rayner, J. G. (Creator), Ritchie, M. G. (Creator), Snoek, B. (Creator), Trivedi, U. (Creator) & Bailey, N. W. (Creator), Wageningen University, 22 Jan 2019

    Dataset

    RNA-seq data from Teleogryllus oceanicus embryos of silent and singing morphs

    Pascoal, S. (Creator), Risse, J. (Creator), Zhang, X. (Creator), Blaxter, M. (Creator), Cezard, T. (Creator), Challis, R. J. (Creator), Gharbi, K. (Creator), Hunt, J. (Creator), Kumar, S. (Creator), Langan, E. (Creator), Liu, X. (Creator), Rayner, J. G. (Creator), Ritchie, M. G. (Creator), Snoek, B. (Creator), Trivedi, U. (Creator) & Bailey, N. W. (Creator), University of St Andrews, 31 Jan 2019

    Dataset

    Genomics of Rapid Evolution in Field Crickets

    Pascoal, S. (Creator), Risse, J. (Creator), Zhang, X. (Creator), Blaxter, M. (Creator), Cezard, T. (Creator), Challis, R. J. (Creator), Gharbi, K. (Creator), Hunt, J. (Creator), Kumar, S. (Creator), Langan, E. (Creator), Liu, X. (Creator), Rayner, J. G. (Creator), Ritchie, M. G. (Creator), Snoek, B. (Creator), Trivedi, U. (Creator) & Bailey, N. W. (Creator), University of Edinburgh, 22 Jan 2020

    Dataset

    Cite this

    Pascoal, S., Risse, J. E., Zhang, X., Blaxter, M., Cezard, T., Challis, R. J., Gharbi, K., Hunt, J., Kumar, S., Langan, E., Liu, X., Rayner, J. G., Ritchie, M. G., Snoek, B. L., Trivedi, U., & Bailey, N. W. (2020). Field cricket genome reveals the footprint of recent, abrupt adaptation in the wild. Evolution Letters, 4(1), 19-33. https://doi.org/10.1002/evl3.148