Fig. 1.

Karyotypes based on staining using standard cytogenetic analysis with DAPI, the chromosome rearrangement occurrence, and differences for chromosome 6 in V. acanthurus and V. citrinus from four populations. We identified three morphological arrangements for chromosome 6, indicating a polymorphic distribution of AA (top), heterozygous acrocentric submetacentric (middle), and MM (bottom) individuals. Inset shows karyotypes from each locality and the number of individuals with that karyotype. N, northern (V. citrinus); W, western (V. acanthurus); S, southern (V. acanthurus); E, eastern (V. acanthurus). The scale bar represents the inset (Figure modified from Dobry et al. 2023a).