On the Structure of the External Genitalia in Dipodidæ and Zapodidæ (Rodentia) as a Classificatory Character.

Vinogradov, B. S.

doi:10.1111/j.1096-3642.1925.tb01528.x

Cited by 17 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An analysis in which these five osteological characters were dropped from my data set produced a single tree of identical structure to the one presented in Figure 1 with a length of 61 steps and a consistency index of 0.820. In contrast, previous studies which have been based primarily on cranial and dental characters have produced classifications which suggest a different evolutionary history for the taxa in this clade (DOBSON 1882;LYON 1901 ;ELLERMAN 1940;VINOGRADOV 1930).…”

Section: Postcranial Osteological Charactersmentioning

confidence: 68%

“…The monophyly of the superfamily Dipodoidea is supported by a number of cranial and dental synapomorphies (VINOGRADOV 1930;ELLERMAN 1940) in addition to the postcranial characters listed above (Table). The group originally was allied with hystricomorph rodents based on the relationship of the M. masseter medialis to the infraorbital foramen in these genera (DOBSON 1882; PARSONS 1894).…”

Section: Discussionmentioning

confidence: 99%

“…The distinctive nature of dipodoid rodents, i. e., birch mice, jumping mice, and jerboas, has long been recognized, and the basic classification of this clade has remained unchanged for more than a century (DOBSON 1882). It is not merely cranial and dental morphology that render this group distinctive, but it is the striking modifications of the limbs for bipedal locomotion that have made this group the subject of numerous systematic and morphologic studies (BERMAN 1979(BERMAN , 1985VINOGRADOV 1925VINOGRADOV , 1930VINOGRADOV , 1937POCOCK 1922;FOKIN 1971;KAUP 1975KAUP , 1976 SCHUMA" 1904;WASSIF 1960;HATT 1932; KOWALSKA-DYRCZ 1973;KLINGENER 1964KLINGENER , 1984LYON 1901;HOWELL 1920HOWELL , 1932PARSONS 1894PARSONS , 1896PARSONS , 1898 PAVLINOV and SHENBROT 1983; (1955,1959), and MILLER and GIDLEY (1918) recognized two families within the Dipodoidea, the Zapodidae and the Dipodidae. The family Zapodidae was composed of two subfamilies, the quadrupedal birch mice and the bipedal jumping mice.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Limb myology and phylogenetic relationships in the superfamily Dipodoidea (birch mice, jumping mice, and jerboas)

Stein¹

2009

Journal of Zoological Systematics and Evolutionary Research

View full text Add to dashboard Cite

Limb muscles were dissected in seven genera, representing all six superfamilies, of dipodoid rodents and myolo ic characters were used to construct a phylogenetic h pothesis of relationships within this cfade. M ologic differences among genera su ported t i e monophyly of the superfamily Dipodoidea reLtive to the out rou taxon and reveaEd that Sicista is the sister group to all other zapodid and dipodid enera. Tkis picement of Sicista differs markedly from its position in previous classifications &ere it has been regarded merely as a primitive zapodid.genus. The ph lograrn based on rnyologic characters also indicated that Cardiocranius is not a rimitive dipodi8genus; it is the sister group to the subfamily Dipodinae. Although myologic differences among taxa were not sufficient to warrant the continued separation of za odids and dipodids into two families, a new classification that places Sicista in its own family, ficistidae, and places the remaining za odids and dipodids in the family Dipodidae, is proposed. Differences in are discussed in light orthis pjylogeny.

show abstract

Section: Postcranial Osteological Charactersmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Limb myology and phylogenetic relationships in the superfamily Dipodoidea (birch mice, jumping mice, and jerboas)

Stein¹

2009

Journal of Zoological Systematics and Evolutionary Research

View full text Add to dashboard Cite

show abstract

“…Despite the habitat plasticity, birch mice are similar in appearance with few morphological characters separating species. Male reproductive anatomy, however, provides for the solid diagnosis of 7 species [Vinogradov, 1925;1937;Ognev, 1948;Shenbrot et al, 1995]. Although pelage variation allows for the distinction of a number of subspecies, especially within the widely distributed steppe birch (Sicista subtilis) , and forest birch mice (S. betulina) , the taxonomic validity of these is hotly debated [Vinogradov, 1937;Ellerman, 1941;Ognev, 1948;Shenbrot et al, 1995, and references therein].…”

mentioning

confidence: 99%

Karyotype Reorganisation in the <i>subtilis</i> Group of Birch Mice (Rodentia, Dipodidae, <i>Sicista</i>): Unexpected Taxonomic Diversity within a Limited Distribution

Kovalskaya

Анискин

Bogomolov

et al. 2011

Cytogenet Genome Res

View full text Add to dashboard Cite

Conventional cytogenetic studies of Sicista subtilis and S. severtzovi (Dipodidae, Sicistinae), both attributable to the subtilis group of birch mice, revealed extensive karyotype diversity with 2n = 16–26 and NFa values of 26–46 indicating the overwhelming non-Robertsonian nature of chromosomal reorganization in these species. The numerical and structural chromosome variability was principally found in specimens located within a confined region of the East European (Russian) Plain. The approximately 135,000-km² area occurs in the vicinity of the Don River bend between 49°13’N/43°46’E and 51°32’N/36°16’E. The detection of cytotypes sharing similar 2n and NF values, but having morphologically distinct chromosomes, suggests that these may result from polymorphisms present both within recognized species and in cryptic taxa not hitherto described. We conducted a comprehensive, comparative chromosome banding analysis of 52 birch mice (21 localities) referable to the subtilis group and report the presence of 5 distinct karyotypes, each characterized by a combination of stable, variable, and partly overlapping 2n/NFa values. These karyotypes differed from each other by 10–29 structural chromosomal rearrangements (18.1 ± 6.3) that comprised Rb fusions/fissions (42.2%), pericentric inversions (31.1%), and tandem translocations (22.2%). The composition, and the high numbers of these chromosomal changes, is likely to provide an effective means of post-mating isolation, suggesting that taxonomic diversity within the subtilis group is larger than currently accepted. Additionally, we report the frequent fixation of tandem translocations in sample populations, one of which was found in a polymorphic state representing, as far as we are aware, the first case of an in statu nascendi tandem fusion in wild populations. Moreover, our data revealed that bi-armed chromosomes were involved in fusions detected in some of the subtilis taxa. In each instance, however, fusions were preceded by pericentric inversions that transform one or both bi-armed chromosomes into acrocentrics resulting in either centromere-telomere or Robertsonian translocations. Finally, a phylogenetic scenario inferred from a cladistic analysis of the chromosomal data suggests that the extensive karyotypic diversification within the subtilis group in the south-east region of the Russian Plain most likely results from fragmentation of a continuously distributed, ancestral population. It is thought that this occurred at the last glacial maximum (18,000–14,000 years B.P.), and that the process of isolation has been exacerbated by increasing human activity in the region in modern times.

show abstract

“…The current systematics of the genus Sicista is based on the male reproductive anatomy (Méhely 1913, Vinogradov 1925, Ognev 1948, Ausländer & Hellwings 1957 and cytogenetic data (e.g. Sokolov et al 1987), and is reviewed by Shenbrot et al (1995).…”

Section: Introductionmentioning

confidence: 99%

An integrative systematic revision of the European southern birch mice (Rodentia: Sminthidae, Sicista subtilis group)

2015

View full text Add to dashboard Cite

The systematics of the genus Sicista is unclear, mostly because of the high level of chromosomal variability within the genus. One of the most challenging groups for systematists is the steppic Sicista subtilis species group that extends from central Europe to Lake Baikal. We present a systematic review of these European southern birch mice using an integrative taxonomic approach. In this review, we evaluate the degree of genetic and morphological differentiation of the Sicista subtilis complex by analysing 12 European populations, and propose a new taxonomic treatment for the subtilis group based on an integrative approach combining phylogenetic and morphometric analyses with a review on previously published cytogenetic and morphological data. The phylogenetic relationship was reconstructed using sequences of the whole mitochondrial cytochrome b (CytB) and the nucleus‐encoded interphotoreceptor binding protein (IRBP) under the maximum parsimony and maximum likelihood criteria. Based on whole CytB sequences, genetic distances were reconstructed and visualised among the taxa. These data were supplemented with multivariate analysis of the morphology of the baculum and of the penile spike of museum specimens. Based on the genetic and the morphological data set, we suggest that the subspecies trizona and nordmanni should be raised to the species rank. We suggest Sicista trizona (Frivaldszky, 1865) and Sicista nordmanni (Keyserling and Blasius, 1840) as names for these species, respectively. The species status of Sicista severtzovi is not supported by our results, so we recommend reclassifying it as a subspecies of Sicista subtilis. Finally, the large genetic distance between the Hungarian and Romanian populations of Sicista trizona led us to describe the Romanian population as a new subspecies.

show abstract

On the Structure of the External Genitalia in Dipodidæ and Zapodidæ (Rodentia) as a Classificatory Character.

Cited by 17 publications

References 0 publications

Limb myology and phylogenetic relationships in the superfamily Dipodoidea (birch mice, jumping mice, and jerboas)

Limb myology and phylogenetic relationships in the superfamily Dipodoidea (birch mice, jumping mice, and jerboas)

Karyotype Reorganisation in the <i>subtilis</i> Group of Birch Mice (Rodentia, Dipodidae, <i>Sicista</i>): Unexpected Taxonomic Diversity within a Limited Distribution

An integrative systematic revision of the European southern birch mice (Rodentia: Sminthidae, Sicista subtilis group)

Contact Info

Product

Resources

About