MOLECULAR DIVERGENCE AND PHYLOGENETIC RELATIONSHIPS OF CHINCHILLIDS (RODENTIA: CHINCHILLIDAE)
| Autor: | Angel E. Spotorno, John P. Valladares, Juan C. Marin, R. Eduardo Palma, Carlos Zuleta R |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Lagostomus
food.ingredient Ecology biology Hystricognathi Zoology Abrocoma cinerea biology.organism_classification Octodon degus food Genetics biology.domesticated_animal Animal Science and Zoology Octodontidae Abrocoma Ecology Evolution Behavior and Systematics Lagidium Chinchillidae Nature and Landscape Conservation |
| Zdroj: | Journal of Mammalogy. 85:384-388 |
| ISSN: | 1545-1542 0022-2372 |
| DOI: | 10.1644/brb-119 |
| Popis: | Molecular phylogenetic relationships were investigated in 6 species of Chinchillidae (Chinchilla lanigera, C. brevicaudata, Lagidium peruanum, L. viscacia, L. wolffsohni, and Lagostomus maximus), 1 species of Dinomyidae (Dinomys branickii), 1 of Abrocomidae (Abrocoma cinerea), and 1 of Octodontidae (Octodon degus) using the first 548 base pairs of the mitochondrial cytochrome-b gene. Maximum-parsimony and maximumlikelihood analyses consistently showed Chinchillidae as a robust clade and confirmed a close relationship with Dinomyidae. Both Chinchilla species differed at 22 sites, and 3 were nonsilent; average genetic distances were approximately 6%. Sequences from domestic C. lanigeraand wild C. brevicaudatashowed low levels of variation. Although all topologies obtained were congruent with current taxonomy, Lagidium exhibited large genetic distances (range 5.9‐8.9%), suggesting the existence of more than the 3 species currently recognized. Chinchillids are endemic South American rodents (Rodentia, Hystricognathi, Chinchillidae) and occur along the Andes. They include chinchillas (Chinchilla), mountain viscachas (Lagidium), and pampas viscachas (Lagostomus). |
| Databáze: | OpenAIRE |
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