Molecular phylogeny of brush-tailed mice of the genus Calomyscus (Rodentia: Calomyscidae) inferred from mitochondrial DNA sequences (Cox1 gene)
Abstract
This study examined the genetic divergence of cytochrome oxidase I (Cox1) and the molecular phylogenetic relationships among allopatric populations of five morphospecies of brush-tailed mice (Calomyscus). The genus Calomyscus had long been considered a single species, Calomyscus bailwardi; however, currently, eight geographical species are recognized on the basis of karyotypic, morphologic, and restriction fragment length polymorphism differentiation. Molecular approaches (DNA sequencing) have recently been used to examine the level of genetic differentiation, but this research has principally been restricted to cytochrome b sequences throughout the ranges of C. baluchi and C. hotsoni. To further examine the relationships among species of Calomyscus, we evaluated five morphospecies using DNA sequences. Specimens of Calomyscus were collected from 13 sites in Iran and Pakistan. A total of 637 base pairs of a mitochondrial gene (Cox1) was amplified and sequenced. Analyses using maximum parsimony, maximum likelihood, and Bayesian inference provided similar results and placed the representatives of the five morphospecies into five well-supported clades, each corresponding to one of the recognized morphospecies. Furthermore, our molecular data expanded the known distribution of C. elburzensis from northeast to central Iran (Razavi Khorasan, Northern Khorasan, and Yazd provinces) and identified the Yazd population as a geographic isolate with ties to the Elburz Mountains.
This study was funded by Ferdowsi University of Mashhad project grant on “Phylogeny and phylogeography of brush-tailed mice of Iran”, number 41721/23.10.86.
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Artikel in diesem Heft
- Masthead
- Masthead
- Original Studies
- Reproductive strategies and natural history of the arboreal Neotropical vesper mouse, Nyctomys sumichrasti
- Seasonal habitat use and selection of the endangered huemul deer (Hippocamelus bisulcus) in Patagonian Andes
- Habitat-population density relationship for the white-tailed deer Odocoileus virginianus during the dry season in a Pacific Mexican tropical dry forest
- An ethogram and activity budget of captive Sichuan takin (Budorcas taxicolor tibetana) with comparisons to other Bovidae
- An escaped herd of Iberian wild goat (Capra pyrenaica, Schinz 1838, Bovidae) begins the re-colonization of the Pyrenees
- Mammals of Amapá State, Eastern Brazilian Amazonia: a revised taxonomic list with comments on species distributions
- Molecular phylogeny of brush-tailed mice of the genus Calomyscus (Rodentia: Calomyscidae) inferred from mitochondrial DNA sequences (Cox1 gene)
- Mitochondrial sequences point on a cryptic species in five-toed jerboas, subgenus Paralactaga
- Assessment of terrestrial small mammals and a record of the critically endangered shrew Crocidura wimmeri in Banco National Park (Côte d’Ivoire)
- Short Notes
- Population density of silky anteaters (Cyclopes didactylus Xenarthra: Cyclopedidae) in a protected mangrove swamp on the island of Trinidad
- Diet of Tonatia bidens (Chiroptera, Phyllostomidae) in an Atlantic Forest area, southeastern Brazil: first evidence for frugivory
- Multiple broods from a single mating in the hazel dormouse (Muscardinus avellanarius)
- The tetralophodont pattern of the upper molars in juvenile Cannomys badius (Rodentia, Spalacidae)
- Triggering bat detectors: automatic vs. manual mode