Diversity of Palaearctic chipmunks (Tamias, Sciuridae)

Obolenskaya, E.V.; Lee, Mu‐Yeong; Dokuchaev, Nikolai E.; Oshida, Tatsuo; Lee, Mi-Sook; Lee, Hang; Lissovsky, Andrey A.

doi:10.1515/mamm.2009.047

Cited by 35 publications

(26 citation statements)

References 18 publications

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“…Recent studies of call notes (Pisanu et al 2013) indicate regional heterogeneity of Eurasian chipmunks, and morphology and Cytb sequences indicate three distinctive geographic populations in Eastern Asia (Obolenskaya et al 2009). Sequence divergence between these forms ( > 10% in Cytb sequences) is sufficiently great that they may represent distinct species (Lee et al 2008), but studies focused on contact zones are needed to establish the rank of these taxa.…”

Section: Commentmentioning

confidence: 99%

“…Currently, the 25 recognized species are allocated to three subgenera within the genus Tamias: Tamias Illiger, 1811 for the lone species in eastern North America; Eutamias Trouessart, 1880 for the one recognized Eurasian species (but see Obolenskaya et al 2009);and Neotamias A. H. Howell, 1929 for 23 species from western North America. However, for much of the last century, two genera of chipmunks were recognized (Howell 1929, 1938, Hall and Kelson 1959, Hall 1981: Tamias for chipmunks lacking P3 (among other characters) and Eutamias (including Neotamias as a subgenus) for forms retaining this tooth (but see Ellerman 1940 andBryant 1945, who treated them as one).…”

Section: Introductionmentioning

confidence: 99%

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Towards a uniform nomenclature for ground squirrels: the status of the Holarctic chipmunks

Patterson

Norris

2016

Mammalia

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Abstract:The chipmunks are a Holarctic group of ground squirrels currently allocated to the genus Tamias within the tribe Marmotini (Rodentia: Sciuridae). Cranial, postcranial, and genital morphology, cytogenetics, and genetics each separate them into three distinctive and monophyletic lineages now treated as subgenera. These groups are found in eastern North America, western North America, and Asia, respectively. However, available genetic data (mainly from mitochondrial cytochrome b) demonstrate that the chipmunk lineages diverged early in the evolution of the Marmotini, well before various widely accepted genera of marmotine ground squirrels. Comparisons of genetic distances also indicate that the chipmunk lineages are as or more distinctive from one another as are most ground squirrel genera. Chipmunk fossils were present in the late Oligocene of North America and shortly afterwards in Asia, prior to the main radiation of Holarctic ground squirrels. Because they are coordinate in morphological, genetic, and chronologic terms with ground squirrel genera, the three chipmunk lineages should be recognized as three distinct genera, namely, Tamias Illiger, 1811, Eutamias Trouessart, 1880, and Neotamias A. H. Howell, 1929. Each is unambiguously diagnosable on the basis of cranial, post-cranial, and external morphology.

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Section: Commentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Towards a uniform nomenclature for ground squirrels: the status of the Holarctic chipmunks

Patterson

Norris

2016

Mammalia

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“…We studied the introduction of a potentially new reservoir host for pathogenic bacteria in suburban forests, the Siberian chipmunk, Tamias (ϭ Eutamias) sibiricus barberi Johnson and Jones 1955 (see reference 35). Siberian chipmunks originating from Korea have been sold in European pet shops since the 1960s.…”

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confidence: 99%

Introduced Siberian Chipmunks (Tamias sibiricus barberi) Harbor More-Diverse Borrelia burgdorferi Sensu Lato Genospecies than Native Bank Voles (Myodes glareolus)

Marsot

Sigaud

Chapuis

et al. 2011

Appl Environ Microbiol

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Little attention has been given in scientific literature to how introduced species may act as a new host for native infectious agents and modify the epidemiology of a disease. In this study, we investigated whether an introduced species, the Siberian chipmunk (Tamias sibiricus barberi), was a potentially new reservoir host for Borrelia burgdorferi sensu lato, the causative agent of Lyme disease. First, we ascertained whether chipmunks were infected by all of the B. burgdorferi sensu lato genospecies associated with rodents and available in their source of infection, questing nymphs. Second, we determined whether the prevalence and diversity of B. burgdorferi sensu lato in chipmunks were similar to those of a native reservoir rodent, the bank vole (Myodes glareolus). Our research took place between 2006 and 2008 in a suburban French forest, where we trapped 335 chipmunks and 671 voles and collected 743 nymphs of ticks that were questing for hosts by dragging on the vegetation. We assayed for B. burgdorferi sensu lato with ear biopsy specimens taken from the rodents and in nymphs using PCR and restriction fragment length polymorphism (RFLP). Chipmunks were infected by the three Borrelia genospecies that were present in questing nymphs and that infect rodents (B. burgdorferi sensu stricto, B. afzelii, and B. garinii). In contrast, voles hosted only B. afzelii. Furthermore, chipmunks were more infected (35%) than voles (16%). These results may be explained by the higher exposure of chipmunks, because they harbor more ticks, or by their higher tolerance of other B. burgdorferi sensu lato genospecies than of B. afzelii. If chipmunks are competent reservoir hosts for B. burgdorferi sensu lato, they may spill back B. burgdorferi sensu lato to native communities and eventually may increase the risk of Lyme disease transmission to humans.

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“…The Siberian chipmunk is a diurnal ground squirrel native from north to southeastern Eurasia (Obolenskaya et al 2009). Adults weigh approximately 100 g (no sexual dimorphism).…”

Section: Study Species and Sitementioning

confidence: 99%

Factors affecting male and female reproductive success in a chipmunk (Tamias sibiricus) with a scramble competition mating system

Marmet

Pisanu

Chapuis

et al. 2012

Behav Ecol Sociobiol

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While sexual selection in mammals with female defense systems has historically received considerable attention, much less is known about the factors affecting reproductive success in mammalian species with scramble competition mating systems. Using mark-recapture techniques and DNA microsatellite loci to assign parentage, we examined the mating system and factors affecting the variation of the annual reproductive success in an introduced population of the Siberian chipmunk, Tamias sibiricus, a small, monomorphic, solitary squirrel. Our analyses showed that breeding females were spatially dispersed, setting the stage for a scramble competition mating system. Male reproductive success was positively associated with the size of the home range. The strength of sexual selection on this behavioral trait was very strong, equaling previous estimates for morphological traits in female defense mating systems. These findings suggest that a behavioral trait, space use, strongly influences the annual reproductive success in males, which is consistent with expectations in a scramble competition mating system. In both sexes, reproductive success was influenced by habitat, with twice as many juveniles produced in semiopen than in closed habitat, possibly due to differences in food availability between the two habitats.

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Diversity of Palaearctic chipmunks (Tamias, Sciuridae)

Cited by 35 publications

References 18 publications

Towards a uniform nomenclature for ground squirrels: the status of the Holarctic chipmunks

Towards a uniform nomenclature for ground squirrels: the status of the Holarctic chipmunks

Introduced Siberian Chipmunks (Tamias sibiricus barberi) Harbor More-Diverse Borrelia burgdorferi Sensu Lato Genospecies than Native Bank Voles (Myodes glareolus)

Factors affecting male and female reproductive success in a chipmunk (Tamias sibiricus) with a scramble competition mating system

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