eLife Assessment
Using several hundreds of samples and cutting-edge genomic methods, including BioNano, PacBio HiFi, and advanced bioinformatic pipelines, the authors identify six large chromosomal inversions segregating in over 100 species of Lake Malawi cichlids. This important study provides compelling evidence for the presence of these six inversions, their differential distribution among populations, and the association of chromosome 10 inversion with a sex-determination locus. This work also provides a starting point for further investigating the role of these inversions with respect to local adaptation, speciation, sex determination, hybridization, and incomplete lineage sorting in cichlids, which represent ~5% of the extant vertebrate species and are one of the most prominent examples of adaptive radiations.