The genomic response to urbanization in the damselfly Ischnura elegans

The complex and rapid environmental changes brought about by urbanization pose significant challenges to organisms. The multifaceted effects of urbanization often make it difficult to define and pinpoint the very nature of adaptive urban phenotypes. In such situations, scanning genomes for regions differentiated between urban and non-urban populations may be an attractive approach. Here, we investigated the genomic signatures of adaptation to urbanization in the damselfly Ischnura elegans sampled from 31 rural and urban localities in three geographic regions: southern and northern Poland, and southern Sweden. Genome-wide variation was assessed using more than 370,000 single nucleotide polymorphisms (SNPs) genotyped by ddRADseq. Associations between SNPs and the level of urbanization were tested using two genetic environment association methods: LFMM and BayPass. While we found numerous candidate SNPs and a highly significant overlap between candidates identified by the two methods withi..., SNP genotypes obtained using RAD-seq and the associated metadata., , # The genomic response to urbanization in the damselfly Ischnura elegans

[https://doi.org/10.5061/dryad.rfj6q57h3](https://doi.org/10.5061/dryad.rfj6q57h3)

## Description of the data and file structure

The dataset contains **metainformation** in two files:
samples.txt

* sample: RADseq sample
* individual\_id: individual code
* pop: population acronym
* cov: coverage from gstacks
* n\_missing: number of genotypes missing following the final filtering as described in the paper
* fr\_missing: fraction of genotypes missing following the final filtering as described in the paper

localities.txt

* locality: locality full name
* pop: population acronym
* region: geographic region
* urbanization score: as described in the paper
* AMeanT: region standardized mean annual temperature as described in the paper

Full locality information can be added to samples by joining on the pop field.

**SNP genotypes** are in:
aut\_AND\_X\_DP\_GQ\_F\_MISSING\_0\_5.vcf.gz - VCF file containing SNPs on sca...