The phylogeny and classification of caenophidian snakes inferred from seven nuclear protein-coding genes
| Autor: | S. Blair Hedges, Patrick David, Nicolas Vidal, Corinne Cruaud, Arnaud Couloux, Anne-Sophie Delmas |
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| Rok vydání: | 2007 |
| Předmět: |
Paraphyly
Systematics Asia Base Sequence General Immunology and Microbiology biology Nuclear Proteins Zoology Snakes DNA General Medicine biology.organism_classification General Biochemistry Genetics and Molecular Biology Genes Elapidae Acrochordidae Molecular phylogenetics Colubridae Animals Amino Acid Sequence General Agricultural and Biological Sciences Colubroidea Sequence Alignment Phylogeny Lamprophiidae |
| Zdroj: | Comptes Rendus Biologies. 330:182-187 |
| ISSN: | 1631-0691 |
| Popis: | More than 80% of the approximately 3000 living species of snakes are placed in the taxon Caenophidia (advanced snakes), a group that includes the families Acrochordidae, Viperidae, Elapidae, Atractaspididae, and the paraphyletic ‘Colubridae’. Previous studies using DNA sequences have involved few nuclear genes (one or two). Several nodes have therefore proven difficult to resolve with statistical significance. Here, we investigated the higher-level relationships of caenophidian snakes with seven nuclear protein-coding genes and obtained a well-supported topology. Accordingly, some adjustments to the current classification of Caenophidia are made to better reflect the relationships of the groups. The phylogeny also indicates that, ancestrally, caenophidian snakes are Asian and nocturnal in origin, although living species occur on nearly all continents and are ecologically diverse. To cite this article: N. Vidal et al., C. R. Biologies 330 (2007). |
| Databáze: | OpenAIRE |
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