Fine-scale genome-wide diversity in the rainbow darter (Etheostoma caeruleum)

Adaptation to environmental change requires that populations harbor the necessary genetic variation to respond to selection. In freshwater fish species, environmental change in the form of increased stream temperatures places many cold-water species at-risk. Therefore, to investigate fine-scale patterns of genetic diversity in rainbow darters (Etheostoma caeruleum) and the importance of this variation on adaptive potential and determined responses to extreme thermal stress, we used Illumina sequencing to understand population structure and genome-wide diversity.