Black garden ant L. niger is known as a dominant species of urban ant fauna in Europe. Successful propagation of L. niger in transformed ecosystems was associated with behavioral traits in many surveys; however, molecular and genetic basis of such adaptation was never studied. In the present study, genomes of populations from the city of Moscow and natural habitats of Moscow oblast are compared. Pooled samples from rural and urban habitats are collected and sequenced with Illumina HiSeq. SNP frequency, Tajima’s D, and fixation index are estimated with PoPoolation and Popoolation2 software. SNP frequencies are significantly different in 64 genes according to Fisher’s exact test. Some of these genes are detected as affected by recent selection. Out of 64 genes, 26 encode retrotransposon proteins. The genes of immune response to viral and fungal infections, fatty acid synthases, and elements of the Hippo/Fat pathway have different SNP frequencies between populations. Certain retrotransposon genes also can be under selection. It is important to note that repressors and mediators of RNA polymerase II are significantly different between urban and rural populations of L. niger. These genes can influence retrotransposon mobility.
Russian Journal of Genetics – Springer Journals
Published: Mar 12, 2018
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