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Understanding the convoluted evolutionary history of the capped-golden langur lineage .sup.â

Keywords: CG lineage; ancient hybridization; incomplete lineage sorting; multispecies coalescent models; Trachypithecus; Semnopithecus. The phylogenetic position of the capped and golden langur (CG) lineage has been ambiguous owing to the discordance between phylogenies from multiple molecular marke... Full description

Journal Title: Journal of genetics 2021, Vol.100 (2)
Main Author: Arekar, Kunal
Other Authors: Parigi, Abhijna , Karanth, K. Praveen
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Springer
ID: ISSN: 0022-1333
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recordid: cdi_gale_infotracmisc_A681700724
title: Understanding the convoluted evolutionary history of the capped-golden langur lineage .sup.â
format: Article
creator:
  • Arekar, Kunal
  • Parigi, Abhijna
  • Karanth, K. Praveen
subjects:
  • Evolution
  • Evolutionary biology
  • Genetic markers
  • Genetic research
  • Monkeys
  • Phylogeny
ispartof: Journal of genetics, 2021, Vol.100 (2)
description: Keywords: CG lineage; ancient hybridization; incomplete lineage sorting; multispecies coalescent models; Trachypithecus; Semnopithecus. The phylogenetic position of the capped and golden langur (CG) lineage has been ambiguous owing to the discordance between phylogenies from multiple molecular markers. Previous molecular studies have hypothesised that this discordance likely arises from either a hybridization event that took place between the Indian genus Semnopithecus and the Southeast Asian genus Trachypithecus or from incomplete lineage sorting (ILS). Distinguishing between hybridization and ILS is challenging and these processes can lead to serious difficulties in inferring phylogenies. In this study, we used genetic markers (nine nuclear and eight mitochondrial) in conjunction with coalescent based species tree approach and a test for hybridization using posterior predictive checking to better understand the evolutionary origin of the CG lineage. Both the concatenated nuclear as well as the mitochondrial dataset recovered congruent relationships where CG lineage was sister to Trachypithecus. However, nuclear species tree estimated using different multispecies coalescent methods suggested an opposite result, i.e. CG lineage was sister to Semnopithecus. Hybridization analysis strongly indicates gene flow between Semnopithecus and Trachypithecus that likely gave rise to the hybrid CG lineage. Further, the CG lineage is morphologically intermediate between Semnopithecus and Trachypithecus with respect to skull and body measurements. In light of the above evidences, we argue that the CG lineage needs to be elevated to a new genus of its own. Taxonomic and conservation implications of these results are also discussed. Author Affiliation: (1) Evolving-Phylo Lab, Centre for Ecological Sciences, Indian Institute of Science, 560 012, Bengaluru, India (2) Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, 95616, Davis, CA, USA (a) kunal.cyan@gmail.com Article History: Registration Date: 09/24/2021 Received Date: 10/31/2020 Accepted Date: 07/26/2021 Online Date: 11/08/2021 Byline:
language: eng
source:
identifier: ISSN: 0022-1333
fulltext: no_fulltext
issn:
  • 0022-1333
  • 0973-7731
url: Link


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titleUnderstanding the convoluted evolutionary history of the capped-golden langur lineage .sup.â
creatorArekar, Kunal ; Parigi, Abhijna ; Karanth, K. Praveen
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descriptionKeywords: CG lineage; ancient hybridization; incomplete lineage sorting; multispecies coalescent models; Trachypithecus; Semnopithecus. The phylogenetic position of the capped and golden langur (CG) lineage has been ambiguous owing to the discordance between phylogenies from multiple molecular markers. Previous molecular studies have hypothesised that this discordance likely arises from either a hybridization event that took place between the Indian genus Semnopithecus and the Southeast Asian genus Trachypithecus or from incomplete lineage sorting (ILS). Distinguishing between hybridization and ILS is challenging and these processes can lead to serious difficulties in inferring phylogenies. In this study, we used genetic markers (nine nuclear and eight mitochondrial) in conjunction with coalescent based species tree approach and a test for hybridization using posterior predictive checking to better understand the evolutionary origin of the CG lineage. Both the concatenated nuclear as well as the mitochondrial dataset recovered congruent relationships where CG lineage was sister to Trachypithecus. However, nuclear species tree estimated using different multispecies coalescent methods suggested an opposite result, i.e. CG lineage was sister to Semnopithecus. Hybridization analysis strongly indicates gene flow between Semnopithecus and Trachypithecus that likely gave rise to the hybrid CG lineage. Further, the CG lineage is morphologically intermediate between Semnopithecus and Trachypithecus with respect to skull and body measurements. In light of the above evidences, we argue that the CG lineage needs to be elevated to a new genus of its own. Taxonomic and conservation implications of these results are also discussed. Author Affiliation: (1) Evolving-Phylo Lab, Centre for Ecological Sciences, Indian Institute of Science, 560 012, Bengaluru, India (2) Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, 95616, Davis, CA, USA (a) kunal.cyan@gmail.com Article History: Registration Date: 09/24/2021 Received Date: 10/31/2020 Accepted Date: 07/26/2021 Online Date: 11/08/2021 Byline:
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abstractKeywords: CG lineage; ancient hybridization; incomplete lineage sorting; multispecies coalescent models; Trachypithecus; Semnopithecus. The phylogenetic position of the capped and golden langur (CG) lineage has been ambiguous owing to the discordance between phylogenies from multiple molecular markers. Previous molecular studies have hypothesised that this discordance likely arises from either a hybridization event that took place between the Indian genus Semnopithecus and the Southeast Asian genus Trachypithecus or from incomplete lineage sorting (ILS). Distinguishing between hybridization and ILS is challenging and these processes can lead to serious difficulties in inferring phylogenies. In this study, we used genetic markers (nine nuclear and eight mitochondrial) in conjunction with coalescent based species tree approach and a test for hybridization using posterior predictive checking to better understand the evolutionary origin of the CG lineage. Both the concatenated nuclear as well as the mitochondrial dataset recovered congruent relationships where CG lineage was sister to Trachypithecus. However, nuclear species tree estimated using different multispecies coalescent methods suggested an opposite result, i.e. CG lineage was sister to Semnopithecus. Hybridization analysis strongly indicates gene flow between Semnopithecus and Trachypithecus that likely gave rise to the hybrid CG lineage. Further, the CG lineage is morphologically intermediate between Semnopithecus and Trachypithecus with respect to skull and body measurements. In light of the above evidences, we argue that the CG lineage needs to be elevated to a new genus of its own. Taxonomic and conservation implications of these results are also discussed. Author Affiliation: (1) Evolving-Phylo Lab, Centre for Ecological Sciences, Indian Institute of Science, 560 012, Bengaluru, India (2) Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, 95616, Davis, CA, USA (a) kunal.cyan@gmail.com Article History: Registration Date: 09/24/2021 Received Date: 10/31/2020 Accepted Date: 07/26/2021 Online Date: 11/08/2021 Byline:
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