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New Data on Comparative Cytogenetics of the Mouse-Like Hamsters ( Calomyscus Thomas, 1905) from Iran and Turkmenistan

Published version
Peer-reviewed

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Authors

Romanenko, Svetlana A.  ORCID logo  https://orcid.org/0000-0002-0951-5209
Malikov, Vladimir G. 
Mahmoudi, Ahmad 
Golenishchev, Feodor N.  ORCID logo  https://orcid.org/0000-0003-2889-4774
Lemskaya, Natalya A. 

Abstract

The taxonomy of the genus Calomyscus remains controversial. According to the latest systematics the genus includes eight species with great karyotypic variation. Here, we studied karyotypes of 14 Calomyscus individuals from different regions of Iran and Turkmenistan using a new set of chromosome painting probes from a Calomyscus sp. male (2n = 46, XY; Shahr-e-Kord-Soreshjan-Cheshme Maiak Province). We showed the retention of large syntenic blocks in karyotypes of individuals with identical chromosome numbers. The only rearrangement (fusion 2/21) differentiated Calomyscus elburzensis, Calomyscus mystax mystax, and Calomyscus sp. from Isfahan Province with 2n = 44 from karyotypes of C. bailwardi, Calomyscus sp. from Shahr-e-Kord, Chahar Mahal and Bakhtiari-Aloni, and Khuzestan-Izeh Provinces with 2n = 46. The individuals from Shahdad tunnel, Kerman Province with 2n = 51–52 demonstrated non-centric fissions of chromosomes 4, 5, and 6 of the 46-chromosomal form with the formation of separate small acrocentrics. A heteromorphic pair of chromosomes in a specimen with 2n = 51 resulted from a fusion of two autosomes. C-banding and chromomycin A3-DAPI staining after G-banding showed extensive heterochromatin variation between individuals.

Description

Keywords

banding, chromosome painting, fluorescent in situ hybridization, karyotype, molecular cytogenetics, painting probes, type locality

Journal Title

Genes

Conference Name

Journal ISSN

2073-4425

Volume Title

12

Publisher

MDPI
Sponsorship
Russian Science Foundation (19-14-00034)
Russian Foundation for Basic Research (19-04-00557a)
Federal State Program ZIN RAS (AAAA-A19-119032590102-7)