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Systematics of hairy armadillos and the taxonomic status of the Andean hairy armadillo (Chaetophractus nationi)

Hairy armadillos constitute an ecologically homogeneous and morphologically similar group with currently 5 species classified in the subfamily Euphractinae. Among them, the Andean hairy armadillo Chaetophractus nationi (Xenarthra, Cingulata, Dasypodidae) is a small, endangered armadillo that has lon... Full description

Journal Title: Journal of mammalogy 2021-08-23, Vol.96 (4), p.673-689
Main Author: Abba, Agustín M
Other Authors: Cassini, Guillermo H , Valverde, Guido , Tilak, Marie-Ka , Vizcaíno, Sergio F , Superina, Mariella , Delsuc, Frédéric
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
Publisher: US: American Society of Mammalogists
ID: ISSN: 0022-2372
Link: https://hal.archives-ouvertes.fr/hal-01925892
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recordid: cdi_hal_primary_oai_HAL_hal_01925892v1
title: Systematics of hairy armadillos and the taxonomic status of the Andean hairy armadillo (Chaetophractus nationi)
format: Article
creator:
  • Abba, Agustín M
  • Cassini, Guillermo H
  • Valverde, Guido
  • Tilak, Marie-Ka
  • Vizcaíno, Sergio F
  • Superina, Mariella
  • Delsuc, Frédéric
subjects:
  • Biodiversity
  • Chaetophractus
  • Ciencias Naturales
  • conservation
  • Euphractinae
  • Evolution
  • hairy armadillos
  • Life Sciences
  • molecular phylogenetics
  • morphometrics
  • Morphometrics systematics
  • Phylogenetics
  • Populations
  • Populations and Evolution
  • Small mammals
  • SPECIAL FEATURES
  • Systematics
  • Systematics, Phylogenetics and taxonomy
  • Taxonomy
ispartof: Journal of mammalogy, 2021-08-23, Vol.96 (4), p.673-689
description: Hairy armadillos constitute an ecologically homogeneous and morphologically similar group with currently 5 species classified in the subfamily Euphractinae. Among them, the Andean hairy armadillo Chaetophractus nationi (Xenarthra, Cingulata, Dasypodidae) is a small, endangered armadillo that has long been suspected to represent a high-altitude variant of Chaetophractus vellerosus. Here, we report the 1st phylogenetic systematics assessment of hairy armadillos using morphological and molecular analyses of all described species with focus on the status of the Andean hairy armadillo. Multivariate analyses of shape variation based on 3-dimensional landmark coordinates of skulls allowed a clear differentiation of each species with the exception of C. vellerosus and C. nationi, within which only a latitudinal and/or altitudinal gradient in size was apparent. Moreover, analyses of mitochondrial DNA control region (D-loop) revealed a single C. nationi haplotype that appeared to be identical with a C. vellerosus haplotype from Argentina. Identical sequences in C. vellerosus and C. nationi were also observed for 3 of the 5 non-coding nuclear markers investigated. Based on these data, we propose that C. nationi should be considered as a synonym of C. vellerosus. However, this taxonomic change should not preclude the protection of the high-altitude Bolivian populations that are steadily declining because of their overexploitation for traditional purposes. Finally, phylogenetic analyses of euphractine armadillos based on a combination of 6 non-coding nuclear markers and 2 nuclear exons suggest the paraphyly of the genus Chaetophractus, with C. vellerosus being more closely related to Zaedyus pichiy than to C. villosus.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0022-2372
fulltext: fulltext
issn:
  • 0022-2372
  • 1545-1542
url: Link


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titleSystematics of hairy armadillos and the taxonomic status of the Andean hairy armadillo (Chaetophractus nationi)
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creatorAbba, Agustín M ; Cassini, Guillermo H ; Valverde, Guido ; Tilak, Marie-Ka ; Vizcaíno, Sergio F ; Superina, Mariella ; Delsuc, Frédéric
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descriptionHairy armadillos constitute an ecologically homogeneous and morphologically similar group with currently 5 species classified in the subfamily Euphractinae. Among them, the Andean hairy armadillo Chaetophractus nationi (Xenarthra, Cingulata, Dasypodidae) is a small, endangered armadillo that has long been suspected to represent a high-altitude variant of Chaetophractus vellerosus. Here, we report the 1st phylogenetic systematics assessment of hairy armadillos using morphological and molecular analyses of all described species with focus on the status of the Andean hairy armadillo. Multivariate analyses of shape variation based on 3-dimensional landmark coordinates of skulls allowed a clear differentiation of each species with the exception of C. vellerosus and C. nationi, within which only a latitudinal and/or altitudinal gradient in size was apparent. Moreover, analyses of mitochondrial DNA control region (D-loop) revealed a single C. nationi haplotype that appeared to be identical with a C. vellerosus haplotype from Argentina. Identical sequences in C. vellerosus and C. nationi were also observed for 3 of the 5 non-coding nuclear markers investigated. Based on these data, we propose that C. nationi should be considered as a synonym of C. vellerosus. However, this taxonomic change should not preclude the protection of the high-altitude Bolivian populations that are steadily declining because of their overexploitation for traditional purposes. Finally, phylogenetic analyses of euphractine armadillos based on a combination of 6 non-coding nuclear markers and 2 nuclear exons suggest the paraphyly of the genus Chaetophractus, with C. vellerosus being more closely related to Zaedyus pichiy than to C. villosus.
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subjectBiodiversity ; Chaetophractus ; Ciencias Naturales ; conservation ; Euphractinae ; Evolution ; hairy armadillos ; Life Sciences ; molecular phylogenetics ; morphometrics ; Morphometrics systematics ; Phylogenetics ; Populations ; Populations and Evolution ; Small mammals ; SPECIAL FEATURES ; Systematics ; Systematics, Phylogenetics and taxonomy ; Taxonomy
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abstractHairy armadillos constitute an ecologically homogeneous and morphologically similar group with currently 5 species classified in the subfamily Euphractinae. Among them, the Andean hairy armadillo Chaetophractus nationi (Xenarthra, Cingulata, Dasypodidae) is a small, endangered armadillo that has long been suspected to represent a high-altitude variant of Chaetophractus vellerosus. Here, we report the 1st phylogenetic systematics assessment of hairy armadillos using morphological and molecular analyses of all described species with focus on the status of the Andean hairy armadillo. Multivariate analyses of shape variation based on 3-dimensional landmark coordinates of skulls allowed a clear differentiation of each species with the exception of C. vellerosus and C. nationi, within which only a latitudinal and/or altitudinal gradient in size was apparent. Moreover, analyses of mitochondrial DNA control region (D-loop) revealed a single C. nationi haplotype that appeared to be identical with a C. vellerosus haplotype from Argentina. Identical sequences in C. vellerosus and C. nationi were also observed for 3 of the 5 non-coding nuclear markers investigated. Based on these data, we propose that C. nationi should be considered as a synonym of C. vellerosus. However, this taxonomic change should not preclude the protection of the high-altitude Bolivian populations that are steadily declining because of their overexploitation for traditional purposes. Finally, phylogenetic analyses of euphractine armadillos based on a combination of 6 non-coding nuclear markers and 2 nuclear exons suggest the paraphyly of the genus Chaetophractus, with C. vellerosus being more closely related to Zaedyus pichiy than to C. villosus.
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