The DOI matches its Crossref record; 77 of the 79 references it cites were found in a registry or an index.
Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: a relaxed molecular clock study within xenarthrans
Open accessAbstract
BACKGROUND: Comparative genomic data among organisms allow the reconstruction of their phylogenies and evolutionary time scales. Molecular timings have been recently used to suggest that environmental global change have shaped the evolutionary history of diverse terrestrial organisms. Living xenarthrans (armadillos, anteaters and sloths) constitute an ideal model for studying the influence of past environmental changes on species diversification. Indeed, extant xenarthran species are relicts from an evolutionary radiation enhanced by their isolation in South America during the Tertiary era, a period for which major climate variations and tectonic events are relatively well documented. RESULTS: We applied a Bayesian approach to three nuclear genes in order to relax the molecular clock assumption while accounting for differences in evolutionary dynamics among genes and incorporating paleontological uncertainties. We obtained a molecular time scale for the evolution of extant xenarthrans and other placental mammals. Divergence time estimates provide substantial evidence for contemporaneous diversification events among independent xenarthran lineages. This correlated pattern of diversification might possibly relate to major environmental changes that occurred in South America during the Cenozoic. CONCLUSIONS: The observed synchronicity between planetary and biological events suggests that global change played a crucial role in shaping the evolutionary history of extant xenarthrans. Our findings open ways to test this hypothesis further in other South American mammalian endemics like hystricognath rodents, platyrrhine primates, and didelphid marsupials.
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“Hox genes in Nematostella and other cnidarians are also expressed in spatial patterns consistent with an ancient role in embryonic development (54)(55)(56).”
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Metadata
- Authors
- Delsuc, F., Vizcaíno, S. F., & Douzery, E. J.
- Affiliations
- Université de Montpellier (FR)
- Corresponding author
- Delsuc, Frédéric
- Venue
- BMC Evolutionary Biology
- Published
- 2004-04-28
- Volume
- 4
- Issue
- 1
- Pages
- 11-11
- ISSN
- 1471-2148 (ISSN-L)
- PMC
- PMC419338
- OpenAlex
- W2152423927
- Cited by
- 212
- References
- 79
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 4 · 2023: 8 · 2022: 5 · 2021: 12 · 2020: 7 · 2019: 8 · 2018: 5 · 2017: 13 · 2016: 13 · 2015: 12 · 2014: 10 · 2013: 7 · 2012: 16
- FWCI
- 10.08
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- BMC Evolutionary Biology (publishedVersion)
- PubMed Central (publishedVersion, other-oa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- PubMed (publishedVersion)
- Americanae (AECID Library) (submittedVersion, cc-by)
- HAL (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Greater South Information System
- Funders
- Centre National de la Recherche Scientifique
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Plant Diversity and Evolution
- Keywords
- Xenarthra, armadillos, anteaters, sloths, divergence time estimation, global change, species diversification, placental mammals, South American mammals, Cenozoic, nuclear genes, phylogenomics
- MeSH terms
- Animals, Armadillos, Bayes Theorem, Disasters, Xenarthra, Models, Genetic, Mutation, Paleontology, Phylogeny, Sloths, South America, Species Specificity, Time Factors, von Willebrand Factor, Receptors, Adrenergic, alpha-2, Evolution, Molecular, Genes, BRCA1
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