Chromosomal evolution of the Genus Nannospalax (Palmer 1903) (Rodentia, Muridae) from western Turkey

Matur, Ferhat

doi:10.3906/zoo-1208-25

Cited by 10 publications

(13 citation statements)

References 21 publications

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“…The extensive karyotype variation in Nannospalax arises from numerous and still insufficiently identified chromosomal changes, because studies using banding techniques or molecular cytogenetic methods have been rather rare [ 79 , 80 , 81 , 82 ]. Mechanisms of chromosomal evolution already recorded in this group are Robertsonian rearrangements (fusions and fissions), additions/deletions of C-heterochromatin, pericentric inversions, centromeric shifts, euchromatin deletions, positional changes of the nucleolar organizing regions (NOR) sites, missing whole chromosomes, or supernumerary B chromosomes [ 29 , 53 , 60 , 79 , 83 ].…”

Section: Chromosomal Rearrangements In Nannospalax Leucomentioning

confidence: 99%

Exceptional Chromosomal Evolution and Cryptic Speciation of Blind Mole Rats Nannospalax leucodon (Spalacinae, Rodentia) from South-Eastern Europe

Savić

Ćirović

Bugarski-Stanojević

2017

Genes

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Mole rats are exclusively subterranean and highly specialized rodents. Their long lifespans, remarkable anti-cancer mechanisms, and various distinctive adaptive features make them a useful research model. Moreover, opposing convergence of morphological traits, they have developed extremely high karyotype variability. Thus, 74 chromosomal forms have been described so far and new ones are being revealed continuously. These evolved during the process of rapid radiation and occur in different biogeographical regions. During research into their reproductive biology we have already provided substantial evidence for species-level separation of these taxa. Here, we review diverse chromosomal forms of the lesser blind mole rat, Mediterranean Nannospalax leucodon, distributed in South-eastern Europe, their karyotype records, biogeography, origin, and phylogeny from our extensive research. In the light of new data from molecular genetic studies, we question some former valuations and propose a cryptospecies rank for seven reproductively isolated chromosomal forms with sympatric and parapatric distribution and clear ecogeographical discrepances in their habitats, as well as new experimental and theoretical methods for understanding the courses of speciation of these unique fossorial mammals.

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Section: Chromosomal Rearrangements In Nannospalax Leucomentioning

confidence: 99%

Exceptional Chromosomal Evolution and Cryptic Speciation of Blind Mole Rats Nannospalax leucodon (Spalacinae, Rodentia) from South-Eastern Europe

Savić

Ćirović

Bugarski-Stanojević

2017

Genes

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“…In Turkey, the first karyotypic study was conducted by Yüksel (1984) on the Elazığ population in Turkey. Banded chromosomes of Turkish Nannospalax nehringi and N. ehrenbergi were described by Ivanitskaya et al (1997), Gülkaç and Küçükdumlu (1999), Ivanitskaya et al (2008), Arslan and Bölükbaş (2010), Arslan, Akan, et al (2011), Arslan, Toyran, et al (2011), , , Matur et al (2013), and Aşan Baydemir et al (2013). However, data on differentially stained karyotypes of mole rats in Turkey are still insufficient.…”

Section: Introductionmentioning

confidence: 99%

A new karyotype and chromosomal banding pattern inNannospalax ehrenbergi(Nehring, 1898) (Rodentia: Spalacidae) from southeast Anatolia, Turkey

et al. 2015

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This paper presents new data on chromosomes of the Palestine mole rat, Nannospalax ehrenbergi, from southeast Anatolia, Turkey. A new chromosomal form, 2n = 56, NF = 62 and NFa = 58, is determined from the region. C-banding revealed pericentromeric constitutive heterochromatin in one submetacentric and seven acrocentric autosome pairs. Two acrocentric autosome pairs and an acrocentric chromosome with a secondary constriction showed interstitial C-positive bands on their long arms. A secondary constriction was detected in the Y chromosome. The NORs were observed in one medium-sized metacentric autosome pair, and in four acrocentric pairs of autosomes.

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“…N. leucodon is presumably restricted to the European part of the country called Thrace and its occurrence in the western parts of Anatolia (the Asiatic part of Turkey) is not sure [7, 11]. The karyotype of Turkish populations of N. leucodon comprises 56 chromosomes (e.g., [10, 12, 13]), but the same diploid number was recorded also in various populations of N. xanthodon from Anatolia (e.g., [12–16]). In these studies the conventionally chromosomes were mostly studied and the banding data are largely lacking.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Chromosome Banding Pattern in the2n=56Cytotypes ofNannospalax leucodonandN. xanthodonfrom Turkey

Arslan

Arısoy

Zima

2014

The Scientific World Journal

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We present the karyotype characteristics of five cytotypes of mole rats (Nannospalax) with 56 chromosomes revealed by the C-banding and AgNOR staining analyses. We attempt to investigate if the specific distinction between the populations from Thrace (N. leucodon) and Anatolia (N. xanthodon) is reflected also in their karyotypic differentiation. The specimens from each of the five populations studied revealed a distinct karyotype which was different from those found in other populations. The fundamental number of autosomal arms varied from 68 to 72. The amount of C-heterochromatin was larger in the Thrace sample of N. leucodon compared to the Anatolian population of N. xanthodon. The active NOR sites were recorded on five autosomal pairs in N. leucodon, whereas only three or four pairs bearing NOR were observed in N. xanthodon. Differences between the studied populations were quantified in the analysis of the distribution pattern of the C-positive bands and the AgNOR sites in individual chromosomes which indicated a basal position of the Thrace sample of N. leucodon and its divergence from other studied populations. The karyotypes of the 56-chromosome populations of N. leucodon and N. xanthodon are thus distinctly different.

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Chromosomal evolution of the Genus Nannospalax (Palmer 1903) (Rodentia, Muridae) from western Turkey

Cited by 10 publications

References 21 publications

Exceptional Chromosomal Evolution and Cryptic Speciation of Blind Mole Rats Nannospalax leucodon (Spalacinae, Rodentia) from South-Eastern Europe

Exceptional Chromosomal Evolution and Cryptic Speciation of Blind Mole Rats Nannospalax leucodon (Spalacinae, Rodentia) from South-Eastern Europe

A new karyotype and chromosomal banding pattern inNannospalax ehrenbergi(Nehring, 1898) (Rodentia: Spalacidae) from southeast Anatolia, Turkey

Comparison of the Chromosome Banding Pattern in the2n=56Cytotypes ofNannospalax leucodonandN. xanthodonfrom Turkey

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