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Coalescent analysis of phylogenomic data confidently resolves the species relationships in the Anopheles gambiae species complex
Thawornwattana Y. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Coalescent analysis of phylogenomic data confidently resolves the species relationships in the Anopheles gambiae species complex
ผู้แต่ง / หัวหน้าโครงการ (EN): Thawornwattana Y.
บทคัดย่อ (EN): Deep coalescence and introgression make it challenging to infer phylogenetic relationships among closely related species that arose through radiative speciation events. Despite numerous phylogenetic analyses and the availability of whole genomes, the phylogeny in the Anopheles gambiae species complex has not been confidently resolved. Here we extract over 80, 000 coding and noncoding short segments (called loci) from the genomes of six members of the species complex and use a Bayesian method under the multispecies coalescent model to infer the species tree, which takes into account genealogical heterogeneity across the genome and uncertainty in the gene trees. We obtained a robust estimate of the species tree from the distal region of the X chromosome: (A. merus, ((A. melas, (A. arabiensis, A. quadriannulatus)), (A. gambiae, A. coluzzii))), with A. merus to be the earliest branching species. This species tree agrees with the chromosome inversion phylogeny and provides a parsimonious interpretation of inversion and introgression events. Simulation informed by the real data suggest that the coalescent approach is reliable while the sliding-window analysis used in a previous phylogenomic study generates artifactual species trees. Likelihood ratio test of gene flow revealed strong evidence of autosomal introgression from A. arabiensis into A. gambiae (at the average rate of 0:2 migrants per generation), but not in the opposite direction, and introgression of the 3 L chromosomal region from A. merus into A. quadriannulatus. Our results highlight the importance of accommodating incomplete lineage sorting and introgression in phylogenomic analyses of species that arose through recent radiative speciation events. © The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054608766&doi=10.1093%2fmolbev%2fmsy158&partnerID=40&md5=077bd78f7ca62f1c5ce790e03f49841b
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): X chromosome
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Thawornwattana Y.. "Coalescent analysis of phylogenomic data confidently resolves the species relationships in the Anopheles gambiae species complex". ไม่ระบุหน่วยงาน. ม.ป.ป.

Thawornwattana Y.. "Coalescent analysis of phylogenomic data confidently resolves the species relationships in the Anopheles gambiae species complex". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Coalescent analysis of phylogenomic data confidently resolves the species relationships in the Anopheles gambiae species complex
Thawornwattana Y.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
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