TY - JOUR

T1 - Karyotype Evolution and Phylogenetic Relationships of Cricetulus sokolovi Orlov et Malygin 1988 (Cricetidae, Rodentia) Inferred from Chromosomal Painting and Molecular Data

AU - Poplavskaya, Natalia S.

AU - Romanenko, Svetlana A.

AU - Serdyukova, Natalia A.

AU - Trifonov, Vladimir A.

AU - Yang, Fengtang

AU - Nie, Wenhui

AU - Wang, Jinghuan

AU - Bannikova, Anna A.

AU - Surov, Alexey V.

AU - Lebedev, Vladimir S.

N1 - © 2017 S. Karger AG, Basel.

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Sokolov's dwarf hamster (Cricetulus sokolovi) is the least studied representative of the striped hamsters (Cricetulus barabensis species group), the taxonomy of which remains controversial. The species was described based on chromosome morphology, but neither the details of the karyotype nor the phylogenetic relationships with other Cricetulus are known. In the present study, the karyotype of C. sokolovi was examined using cross-species chromosome painting. Molecular and cytogenetic data were employed to determine the phylogenetic position of Sokolov's hamster and to analyze the potential pathways of chromosome evolution in Cricetulus. Both the chromosome and molecular data support the species status of Sokolov's hamster. Phylogenetic analysis of the CYTB data placed C. sokolovi as sister to all other striped hamsters (sequence divergence of 8.1%). FISH data revealed that the karyotype of C. sokolovi is highly rearranged, with the most parsimonious scenario of its origin implying at least 4 robertsonian events and a centromere shift. Comparative cytogenetic data on Cricetinae suggest that their evolutionary history includes both periods of chromosomal conservatism and episodes of rapid chromosomal change.

AB - Sokolov's dwarf hamster (Cricetulus sokolovi) is the least studied representative of the striped hamsters (Cricetulus barabensis species group), the taxonomy of which remains controversial. The species was described based on chromosome morphology, but neither the details of the karyotype nor the phylogenetic relationships with other Cricetulus are known. In the present study, the karyotype of C. sokolovi was examined using cross-species chromosome painting. Molecular and cytogenetic data were employed to determine the phylogenetic position of Sokolov's hamster and to analyze the potential pathways of chromosome evolution in Cricetulus. Both the chromosome and molecular data support the species status of Sokolov's hamster. Phylogenetic analysis of the CYTB data placed C. sokolovi as sister to all other striped hamsters (sequence divergence of 8.1%). FISH data revealed that the karyotype of C. sokolovi is highly rearranged, with the most parsimonious scenario of its origin implying at least 4 robertsonian events and a centromere shift. Comparative cytogenetic data on Cricetinae suggest that their evolutionary history includes both periods of chromosomal conservatism and episodes of rapid chromosomal change.

KW - Ancestral karyotype reconstruction

KW - Chromosome painting

KW - Cytochrome b

KW - Fluorescence in situ hybridization

KW - Chromosome Painting/methods

KW - Animals

KW - Cricetulus/genetics

KW - Phylogeny

KW - Chromosomes, Mammalian/genetics

KW - Haplotypes/genetics

KW - Karyotype

KW - COMPARATIVE CYTOGENETICS

KW - GENOME

KW - CYTOCHROME-B

KW - HAMSTERS

UR - http://www.scopus.com/inward/record.url?scp=85025433660&partnerID=8YFLogxK

U2 - 10.1159/000477521

DO - 10.1159/000477521

M3 - Article

C2 - 28719894

AN - SCOPUS:85025433660

VL - 152

SP - 65

EP - 72

JO - Cytogenetic and Genome Research

JF - Cytogenetic and Genome Research

SN - 1424-8581

IS - 2

ER -