Comparing genome scans among species of the stickleback order reveals three different patterns of genetic diversity. Issue 1 (24th January 2022)

• Record Type: Journal Article
• Authors: Reeve, James; Li, Qiushi; Lindtke, Dorothea; Yeaman, Samuel
• Is Part Of: Ecology and evolution. Volume 12:Issue 1(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-01-24
• Subjects: comparative genomics -- convergent evolution -- genome scan -- stickleback; Ecology -- Periodicals; Evolution -- Periodicals; 577.05
• DOI: 10.1002/ece3.8502
• Languages: English
• ISSNs: 2045-7758

Abstract

Abstract: Comparing genome scans among species is a powerful approach for investigating the patterns left by evolutionary processes. In particular, this offers a way to detect candidate genes that drive convergent evolution. We compared genome scan results to investigate if patterns of genetic diversity and divergence are shared among divergent species within the stickleback order (Gasterosteiformes): the threespine stickleback ( Gasterosteus aculeatus ), ninespine stickleback ( Pungitius pungitus ), and tubesnout ( Aulorhynchus flavidus ). Populations were sampled from the southern and northern edges of each species' range, to identify patterns associated with latitudinal changes in genetic diversity. Weak correlations in genetic diversity ( F ST and expected heterozygosity) and three different patterns in the genomic landscape were found among these species. Additionally, no candidate genes for convergent evolution were detected. This is a counterexample to the growing number of studies that have shown overlapping genetic patterns, demonstrating that genome scan comparisons can be noisy due to the effects of several interacting evolutionary forces. Abstract : Genome scans are popular tools for detecting shared evolutionary events among species. However, not all scans will show overlapping results. This article detects three different outcomes of genome scans, and few shared genetic patterns.