A species interaction kick-starts ecological speciation

This dataset includes whole-genome sequencing (WGS), genotyping-by-sequencing (GBS), and morphological body-shape data from stickleback populations, together with the scripts used for data processing, statistical analyses, and visualization. The dataset is organized into code, data, and reference subfolders, each containing clearly described files as detailed in the README. These resources enable replication of the analyses presented in the paper. All data were collected in compliance with ethical standards for animal research and genetic data sharing.