Data from: A test for within-lake niche differentiation in the nine-spined sticklebacks (Pungitius pungitius)
Calboli, Federico C. F.; Byström, Pär; Merilä, Juha (2017), Data from: A test for within-lake niche differentiation in the nine-spined sticklebacks (Pungitius pungitius), Dryad, Dataset, https://doi.org/10.5061/dryad.j5q12
Specialization for the use of different resources can lead to ecological speciation. Accordingly, there are numerous examples of ecologically specialized pairs of fish “species” in postglacial lakes. Using a polymorphic panel of single nucleotide variants, we tested for genetic footprints of within-lake population stratification in nine-spined sticklebacks (Pungitius pungitius) collected from three habitats (viz. littoral, benthic, and pelagic) within a northern Swedish lake. Analyses of admixture, population structure, and relatedness all supported the conclusion that the fish from this lake form a single interbreeding unit.