Secondary contact and genomic admixture between rhesus and long-tailed macaques in the Indochina Peninsula.

Autor: Ito T; Department of Evolution and Phylogeny, Primate Research Institute, Kyoto University, Aichi, Japan., Kanthaswamy S; School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University West Campus, Glendale, AZ, USA., Bunlungsup S; Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.; National Primate Research Center of Thailand-Chulalongkorn University, Saraburi, Thailand., Oldt RF; School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University West Campus, Glendale, AZ, USA., Houghton P; Primate Products, Inc., Immokalee, FL, USA., Hamada Y; Department of Evolution and Phylogeny, Primate Research Institute, Kyoto University, Aichi, Japan., Malaivijitnond S; Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.; National Primate Research Center of Thailand-Chulalongkorn University, Saraburi, Thailand.
Jazyk: angličtina
Zdroj: Journal of evolutionary biology [J Evol Biol] 2020 Sep; Vol. 33 (9), pp. 1164-1179. Date of Electronic Publication: 2020 Jul 31.
DOI: 10.1111/jeb.13681
Abstrakt: Understanding the process and consequences of hybridization is one of the major challenges in evolutionary biology. A growing body of literature has reported evidence of ancient hybridization events or natural hybrid zones in primates, including humans; however, we still have relatively limited knowledge about the pattern and history of admixture because there have been little studies that simultaneously achieved genome-scale analysis and a geographically wide sampling of wild populations. Our study applied double-digest restriction site-associated DNA sequencing to samples from the six localities in and around the provisional hybrid zone of rhesus and long-tailed macaques and evaluated population structure, phylogenetic relationships, demographic history, and geographic clines of morphology and allele frequencies. A latitudinal gradient of genetic components was observed, highlighting the transition from rhesus (north) to long-tailed macaque distribution (south) as well as the presence of one northern population of long-tailed macaques exhibiting unique genetic structure. Interspecific gene flow was estimated to have recently occurred after an isolation period, and the migration rate from rhesus to long-tailed macaques was slightly greater than in the opposite direction. Although some rhesus macaque-biased alleles have widely introgressed into long-tailed macaque populations, the inflection points of allele frequencies have been observed as concentrated around the traditionally recognized interspecific boundary where morphology discontinuously changed; this pattern was more pronounced in the X chromosome than in autosomes. Thus, due to geographic separation before secondary contact, reproductive isolation could have evolved, contributing to the maintenance of an interspecific boundary and species-specific morphological characteristics.
(© 2020 European Society For Evolutionary Biology. Journal of Evolutionary Biology © 2020 European Society For Evolutionary Biology.)
Databáze: MEDLINE
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