www.biodicon.com Biological Diversity and Conservation ISSN 1308-8084 Online; ISSN 1308-5301 Print 11/1 (2018) 149-159 Research article/Araştırma makalesi Cytotaxonomy of the Crimean barb, Barbus tauricus Kessler 1877 (Pisces, Cypriniformes, Barbinae) living in Turkey Serkan SAYGUN *1 , Tülin ATAÇ ŞAHİN 1 , Filiz SAYGUN 1 1 Department of Fisheries Technology Engineering, Fatsa Faculty of Marine Sciences, Ordu University, Fatsa, Ordu, Turkey Abstract In this study, it is aimed to reveal the chromosome numbers and structures of Crimean Barb, Barbus tauricus Kessler, 1877 living in Ilıca Stream (Ordu/Turkey), by the conventional staining method (Giemsa). Crimea’s Barbels working first time as cytotaxonomic and local in this research were used 24 specimens in different sizes sampled with. As the results of the investigations, It’s defined as diploid (2n) chromosome number of B. tauricus is 100, karyotype’s composed of 6 metacentric, 24 submetacentric, 38 subtelocentric and 32 acrocentric chromosomes and fundamental chromosome arm number is NF= 130. B. tauricus widely distributed throughout the North Anatolian may be arguable taxonomically whether to be as subspecies escherichii or not, but It may said that is located between tetraploids (4n=100) in Eurasian cytotype. Key words: Crimean barb, Barbus tauricus, Cyprinidae, chromosome, Turkey ----------  ---------- Türkiye’de Yaşayan Kırım Bıyıklı Balığının, Barbus tauricus Kessler 1877 (Pisces, Cypriniformes, Barbinae), Sitotaksonomisi Özet Bu araştırmada, Ilıca Irmağında yaşayan Kırım Bıyıklı balığı, Barbus tauricus Kessler, 1877’in kromozom sayısı ve yapısının geleneksel boyama yöntemiyle (Giemsa) ortaya çıkarılması amaçlanmıştır. Sitotaksonomik ve lokal olarak ilk defa yapılan bu çalışmada, çeşitli büyüklüklerde 24 Kırım bıyıklı balığı örneği kullanılmıştır. Yapılan incelemeler sonucunda, B. tauricus’un diploit kromozom sayısının (2n) 100, karyotipi 6 metasentrik, 24 submetasentrik, 38 subtelosentrik ve 32 akrosentrik kromozomdan oluştuğu ve kromozom kol sayısı NF=130 olarak belirlenmiştir. Kuzey Anadolu’da yaygın olarak bulunan B. tauricus’un escherichii alttürü olup olmadığı taksonomik olarak tartışılabilir fakat Avrasya sitotipi içerisindeki tetraploitler (4n) arasında yer aldığı söylenebilir. Anahtar kelimeler: Kırım bıyıklı balığı, Barbus tauricus, Cyprinidae, kromozom, Türkiye 1. Introduction Cypriniformes genus, Cyprinidae Family members are the most common group among the vertebrate groups as a freshwater form in the Mediterranean basin comprising the Black Sea as well. Cyprinid fish are naturally found in the inland water of all the continents around the world except for Antarctica, Australia and South America. When historical development of biogeographic distribution is examined, two scenarios are emphasized: According to the classical north river system formation hypothesis, when the Turgai Sea dried up during the Miocene and Pliocene periods the first freshwater fish reached to Europe from Asia and then as a result of the continuation of the river formations they spread to South Africa from Europe. On the other hand, according to the South Sea hypothesis, the Cyprinidae passing the Mediterranean Sea are reported to have been localized in different regions (Gante, 2011). * Corresponding author / Haberleşmeden sorumlu yazar: Tel.: +904524235053; Fax.: +904524235053; E-mail: erkan_saygun@hotmail.com © 2008 All rights reserved / Tüm hakları saklıdır BioDiCon. 705-0917