Abstract:
:The genus Pseudophoxinus Bleeker, 1860 is found in a wide range of habitats in central Anatolia, but it is not well known from a cytogenetic aspect. In this study the first karyotypic description of the spring minnows Pseudophoxinuscrassus (Ladiges, 1960) and Pseudophoxinushittitorum Freyhof & Özulug, 2010 by means of conventional methods (Giemsa staining, C-banding, silver nitrate impregnation (Ag-NORs)) was performed. Both species are endemic and have restricted distributions in Central Anatolia. Pseudophoxinuscrassus and Pseudophoxinushittitorum have the same diploid chromosome number, 2n = 50, patterns of distribution of constitutive heterochromatin (CH), and localization of nucleolus organizer regions (NORs), but differ in their karyotypic formulae (KFs). The C-banding technique revealed clear pericentromeric blocks of CH in many chromosomes; Ag-NORs treatment revealed consistent positive signals at the end of the short arms of a submetacentric chromosome pair, likely homologous in both species. The karyotypic differences found between these species can be used for their taxonomical study.
journal_name
Comp Cytogenetjournal_title
Comparative cytogeneticsauthors
Unal S,Gaffaroğlu M,Ayata MK,Yüksel Edoi
10.3897/CompCytogen.v8i4.7623subject
Has Abstractpub_date
2014-10-31 00:00:00pages
249-57issue
4eissn
1993-0771issn
1993-078Xjournal_volume
8pub_type
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