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Comparative cytogenetics of three endemic gudgeons of Gobio Cuvier, 1816 (Ostariophysi: Cypriniformes: Gobionidae)
Ist Teil von
Iranian journal of science and technology. Transaction A, Science, 2021-12, Vol.45 (6), p.1933-1940
Ort / Verlag
Cham: Springer International Publishing
Erscheinungsjahr
2021
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Karyotypes and chromosomal banding characteristics of
Gobio fahrettini
Turan, Kaya, Bayçelebi, Aksu & Bektaş, 2018,
Gobio gymnostethus
Ladiges, 1960 and
Gobio insuyanus
Ladiges, 1960, from Anatolia, Turkey, were examined using conventional cytogenetic techniques (Giemsa, C-banding and Ag-NOR). The species studied had invariably diploid chromosome number 2n = 50 and karyotype composed of one uniarmed and 24 biarmed chromosomes. The largest chromosome pair in the karyotypes was a submetacentric pair. C-positive heterochromatin located on the pericentromeres of most of the chromosomes. Also, heterochromatic blocks were located on two chromosome pairs in
G. gymnostethus
whereas in one chromosome pair in
G. fahrettini
. The nucleolus organizer regions were located terminally on the p arms of one submetacentric chromosome pair in all three species. Morphologically differentiated sex chromosomes were not detected. This study is the first chromosomal study of three endemic
Gobio
species from Anatolia.