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 …