On the karyotypes in some populations of the subterranean mole rats in the lower Euphrates-basin, Turkey

Abstract

This investigation was undertaken in order to provide some explanation in chromosomal polymorphism which is widely observed among the members of genus Spalax and also, an attempt was made to elucidate the speciation in this genus. 47 specimens of the mole rat from lower Euphrates were studied; of these, 18 specimens, taken from the east of the river, namely from Sanhurfa, were identified as S. ehrenbergi kirgisorum. The remaining 29 specimens, collected from the west of river, namely Adtyaman and Gaziantep, were identified as Spalax ehrenbergi intermedius. By the analysis of the karyotype, two karyotypic forms of S.e. kirgisorum (2n =52, NF = 76 and 2n =54, NF = 76) were found. Similarly, two karyotypic forms of S.e. intermedius (2n =52, NF = 76 and 2n =56, NF = 90) were established. The phylogenie relations of the karyotypic forms and evolutionary relationship between subspecies were discussed.

Chromosomal diversity in mole-rats of the species Nannospalax ehrenbergi (Rodentia: Spalacidae) from South Anatolia, Turkey

“…The first karyological analyses of Turkish N. ehrenbergi populations were made by Yu¨ksel (1984) from the Elazıg˘population. Karyotype studies of N. ehrenbergi from across their distribution revealed obvious chromosome polymorphisms and several different karyotypes from this region have already been described (Yu¨ksel and Gu¨lkac -1992;Nevo et al 1994bNevo et al , 1995Ivanitskaya et al 1997;Cos -kun 2004a, b). Thus, N. ehrenbergi has a great chromosomal polymorphism according to the diploid number of chromosomes and the number of chromosome arms.…”

“…1). Yu¨ksel and Gu¨lkac -(1992) additionally reported 2n ¼ 54 chromosomal forms from S -anlıurfa-Suruc -. But we could not find or observe 2n ¼ 54 chromosomal specimens from this area.…”

Karyotype, C-banding and AgNORs of two endemic leuciscine fish, Pseudophoxinus crassus (Ladiges, 1960) and P. hittitorum Freyhof & Özulug, 2010 (Teleostei, Cyprinidae)

“…In both species a karyotype with 2n = 50 was revealed, indicating a conserved karyotypic evolution in relation to the diploid number ( Ergene et al 2010 , Karasu et al 2011 ). Thus, cytogenetic data for Pseudophoxinus are insufficient, and further study is needed to evaluate karyological characteristics of the genus, to improve the taxonomic identification of these fish, and to understand the evolutionary trends in this taxon ( Yüksel and Gülkaç 1992 ).…”

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

“…The diploid number of chromosomes ranged between 2n = 48 and 56, while the number of chromosome arms ranged between NF = 66 and 90. The most widespread chromosomal form of the Palestine mole rat has 2n = 52 and NFa = 72 and it has been hitherto reported by various authors (Yüksel 1984;Yüksel and Gülkaç 1992;Nevo et al 1995;Ivanitskaya et al 1997;Coşkun et al 2006).…”