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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The dynamics of introgression across an avian radiation

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Singhal, Sonal [1] ; Derryberry, Graham E. [2] ; Bravo, Gustavo A. [3, 4] ; Derryberry, Elizabeth P. [2] ; Brumfield, Robb T. [5, 6] ; Harvey, Michael G. [7, 8]
Total Authors: 6
[1] Calif State Univ Dominguez Hills, Dept Biol, Carson, CA 90747 - USA
[2] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 - USA
[3] Harvard Univ, Museum Comparat Zool, Cambridge, MA 02138 - USA
[4] Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 - USA
[5] Louisiana State Univ, Museum Nat Sci, Baton Rouge, LA 70803 - USA
[6] Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 - USA
[7] Univ Texas El Paso, Dept Biol Sci, El Paso, TX 79968 - USA
[8] Univ Texas El Paso, Biodivers Collect, El Paso, TX 79968 - USA
Total Affiliations: 8
Document type: Journal article
Source: EVOLUTION LETTERS; v. 5, n. 6 SEP 2021.
Web of Science Citations: 0

Hybridization and resulting introgression can play both a destructive and a creative role in the evolution of diversity. Thus, characterizing when and where introgression is most likely to occur can help us understand the causes of diversification dynamics. Here, we examine the prevalence of and variation in introgression using phylogenomic data from a large (1300+ species), geographically widespread avian group, the suboscine birds. We first examine patterns of gene tree discordance across the geographic distribution of the entire clade. We then evaluate the signal of introgression in a subset of 206 species triads using Patterson's D-statistic and test for associations between introgression signal and evolutionary, geographic, and environmental variables. We find that gene tree discordance varies across lineages and geographic regions. The signal of introgression is highest in cases where species occur in close geographic proximity and in regions with more dynamic climates since the Pleistocene. Our results highlight the potential of phylogenomic datasets for examining broad patterns of hybridization and suggest that the degree of introgression between diverging lineages might be predictable based on the setting in which they occur. (AU)

FAPESP's process: 12/23852-0 - Systematics, biogeography, and phenotypic evolution of the Thamnophilini (Aves, Thamnophilidae): a massive parallel DNA sequencing approach
Grantee:Gustavo Adolfo Bravo Mora
Support Opportunities: Scholarships in Brazil - Post-Doctorate