Description of the Native Hybrid Population Between Squalius semae and Alburnus sellal Distributed in the upper Euphrates River

Year 2020, Volume: 1 Issue: 2, 45 - 51, 30.12.2020

Davut Turan , Cüneyt Kaya , Esra Bayçelebi

Abstract

In the scope of this study, the first description of the hybrid population of Squalius semae and Alburnus sellal from the upper Euphrates River is presented. The description was made based on museum material which collected in July 2006 by electrofishing equipment. The Principal Component Analysis was performed using 24 morphometric characters to compare the relationship between ancestors and hybrid individuals. The hybrid population was characterized by a terminal mouth, a long and slender caudal peduncle (its length 1.9-2.8 times its depth), 8½ branched dorsal-fin ray, 9½-10½ (mode 10½) branched anal-fin rays, 54-60 lateral line scales, 10-11 scale rows between dorsal-fin origin and lateral line, 5-6 scale rows between anal-fin origin and lateral line and 9-10+3-4 gill rakers on the outer side of the first-gill arch. According to the data obtained as a result of this study, most of the metric and meristic data belonging to hybrid individuals placed between the data of Squalius semae and Alburnus sellal.

Keywords

Anatolia, hybridization, bleak, chub

Yukarı Fırat Nehri'nde Yayılış Gösteren Squalius semae ve Alburnus sellal arasındaki Yerli Hibrit Populasyonunun Tanımlanması

Abstract

Bu çalışmada, yukarı Fırat Nehri'nden Squalius semae ve Alburnus sellal hibrit popülasyonunun ilk tanımlaması yapılmıştır. Tanımlama, Temmuz 2006'da elektroşoker avlama ekipmanı ile toplanan müze materyallerine dayanılarak yapılmıştır. Atalar ve hibrit bireyler arasındaki ilişkiyi karşılaştırmak için 24 morfometrik karakter kullanılarak Temel Bileşenler Analizi gerçekleştirildi. Hibrit populasyon terminal konumlu bir ağzının, uzun ve ince bir kuyruk sapının (uzunluğu derinliğinin 1.9-2.8 katı), dorsal yüzgeçte 8½ dallanmış ışının, anal yüzgeçte 9½-10½ (mod 10½) dallanmış ışının, ligne lateralde 54-60 yanal pulun, dorsal yüzgeç orijini ile yan çizgi arasında 10-11, anal yüzgeç orijini ile yanal çizgi arasında ise 5-6 pul sırasının ve ilk solungaç yayının dış tarafında 9-10 + 3-4 solungaç dikeninin olması ile karakterize edildi. Bu çalışma sonucunda elde edilen verilere göre, melez bireylere ait metrik ve meristik verilerin çoğu, Squalius semae ve Alburnus sellal verilerinin arasına yerleşmiştir.

Keywords

Anadolu, Hibriditasyon, inci balığı, tatlısu kefali

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