Caudal osteology and its application to reconstruct phylogenetic relationship in the genus Garra

Among cyprinid family, little information is available about the phylogenetic relationships of the members of genus Garra in Iran. The structure of caudal skeleton as a valuable source in taxonomic studies of fishes can help to determine their systematic position. Hence, this study was conducted to compare the osteological features of caudal fin skeleton and reconstructing phylogenetic tree of the Iranian members of genus Garra. For this purpose, five specimens of every selected (except Iran blind carp with two specimens from each morphotype) taxon were cleared and stained to examine the osteological characteristics of their caudal fin skeleton. Also, Kura barbel (Barbus cyri) and Barzam (Capoeta trutta) were designed as outgroup. The results showed that members of Garra constitute a monophyletic group. The results revealed that the caudal skeleton features cannot discriminate the members of genus Garra at the level of species because of small number of extractable characters and their states.

Kaudal osteoloji ve Garra cinsi filogenisi uygulaması

Cyprinidae familyası içerisinde, İran’da dağılım gösteren Garra cinsi üyelerinin filogenetik ilişkileri ile ilgili az sayıda araştırma bulunmaktadır. Kaudal yüzgeç iskeleti yapısı, balıkların sistematik pozisyonlarının belirlenmesine yardımcı olan, taksonomik çalışmalarda kullanılabilen bir karakterdir. Bu sebeple, bu çalışmada Garra cinsinin İran’daki türlerinin filogenetik ilişkilerini belirlemek amacı ile kaudal yüzgeç iskeletlerinin kemik yapısı karşılaştırılmıştır. Bu amaçla seçilen taksonlara ait beşer bireye kaudal yüzgeç iskeletlerinin osteolojik karakterlerinin belirlenmesi amacı ile şeffaflandırma yöntemi (cleared-stained) uygulanmıştır. Çalışmada Barbus cyri ve Capoeta trutta dış grup olarak kullanılmıştır. Elde edilen sonuçlara göre; Garra üyeleri monofiletik bir grup oluşturmuştur. Sonuçlar kaudal yüzgeç iskeletlerinin Garra cinsi için tür düzeyinde ayrımında kullanılamayacağını göstermiştir.

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Su Ürünleri Dergisi-Cover
  • ISSN: 1300-1590
  • Yayın Aralığı: Yılda 4 Sayı
  • Başlangıç: 1984
  • Yayıncı: Aynur Lök