AUTHOR CONTRIBUTIONS
Diana A. Robledo-Ruiz, Alexandra Pavlova and Paul Sunnucks led initial project conceptualization and design. Lana Austin and J. Nevil Amos collected EYR field samples and genotyping data, and conducted initial analyses of sex-linked loci. Diana A. Robledo-Ruiz and Jesús Castrejón-Figueroa wrote the R functions and analysed the data with guidance from Paul Sunnucks and Alexandra Pavlova. Alexandra Pavlova and Diana A. Robledo-Ruiz wrote the first draft of the manuscript and all authors contributed to editing and writing. All authors approved the final version of this manuscript for publication. Paul Sunnucks, Alexandra Pavlova, Michael J. L. Magrath and Lana Austin secured funding for the project.