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Understanding the convoluted evolutionary history of the capped-golden langur lineage (Cercopithecidae: Colobinae)

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 b... 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: New Delhi: Springer India
ID: ISSN: 0022-1333
Link: https://www.ncbi.nlm.nih.gov/pubmed/34787114
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title: Understanding the convoluted evolutionary history of the capped-golden langur lineage (Cercopithecidae: Colobinae)
format: Article
creator:
  • Arekar, Kunal
  • Parigi, Abhijna
  • Karanth, K. Praveen
subjects:
  • Animal Genetics and Genomics
  • Animals
  • Biological Evolution
  • Biomedical and Life Sciences
  • Body measurements
  • Colobinae - classification
  • Colobinae - genetics
  • Discordance
  • Evolutionary Biology
  • Female
  • Gene flow
  • general
  • Genetic Markers
  • Genetic Speciation
  • Hybridization
  • Hybridization analysis
  • Hybridization, Genetic
  • Life Sciences
  • Male
  • Microbial Genetics and Genomics
  • Mitochondria
  • New genera
  • Phylogeny
  • Plant Genetics and Genomics
  • Research Article
  • Semnopithecus
  • Trachypithecus
ispartof: Journal of genetics, 2021, Vol.100 (2)
description: 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.
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 (Cercopithecidae: Colobinae)
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descriptionThe 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.
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subjectAnimal Genetics and Genomics ; Animals ; Biological Evolution ; Biomedical and Life Sciences ; Body measurements ; Colobinae - classification ; Colobinae - genetics ; Discordance ; Evolutionary Biology ; Female ; Gene flow ; general ; Genetic Markers ; Genetic Speciation ; Hybridization ; Hybridization analysis ; Hybridization, Genetic ; Life Sciences ; Male ; Microbial Genetics and Genomics ; Mitochondria ; New genera ; Phylogeny ; Plant Genetics and Genomics ; Research Article ; Semnopithecus ; Trachypithecus
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descriptionThe 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.
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abstractThe 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.
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