Osteological development of vertebral column and caudal fin in sharpsnout seabream (Diplodus puntazzo)

Abstract

In current study, the healthy osteological development of the vertebral column and of the caudal fin systems in sharpsnout seabream (Diplodus puntazzo) was described under intensive culture condition. In order to study the osteological development, it was used 610 specimens which were stained by Alsian blue for cartilage and Alizarin Red S for bone. The development of the axial skeleton began with the formation of the hypural 1, the neural arches 1 and 4, as well as the haemal arches 1–6 at 4.3, 4.7 and 5.1 mm total length (TL, measured in vivo), respectively. The caudal lepidotrichia were the first membranous bones to appear (5.6 mm TL) and attain their full meristic counts (7.0 mm TL), followed by the vertebral centra, which formed between 5.9 and 8.4 mm TL. By 14.0 mm TL, all the elements were fully ossified except for the ventral ribs. The results of the skeletal ontogeny in D. puntazzo were compared with that reported for other Sparidae and Teleost fishes and also follow the same pattern of most Sparidae species investigated to date

Keywords

• Caudal fin
• D. puntazzo
• larval rearing
• osteological development
• vertebral column

Sivriburun karagöz (Diplodus puntazzo) larvalarında omurga ve kaudal yüzgecin osteolojik gelişimi

Abstract

Sivriburun karagöz (Diplodus puntazzo) larvalarının yoğun yetiştiricilik koşulları altında omurga ve kaudal yüzgeç sisteminin iskelet yapısının normal gelişimi tanımlandı. Osteolojik gelişimin belirlenmesi için 610 adet siviriburun karagöz larvası kıkırdak boyaması için Alsian mavisi ile ve kemik boyaması için Alizarin kırmızısı ile boyandı. Aksiyal iskelet sisteminin gelişimi hipural 1, nöral yaylar 1 - 4 ve hemal yaylar 1-6 ile sırasıyla 4.3, 4.7, ve 5.1 mm total boyda (TB) meydana gelmiştir. Kaudal yüzgeç uzun ışınları ilk membran kemikler olarak görüldü (5.6 mm TB) ve tam sayıya ulaştı (7.0 mm TB), bunu 5.9 ve 8.4 mm TB arasında omurga oluşumu takip etti. 14.0 mm TB’da tüm kas içi ışınlar hariç hemen hemen tüm iskelet elementleri kemikleşmiştir. D. puntazzo larvalarında yürütülen iskelet gelişimi sonuçları diğer Sparidae ve Teleost balıklarda önceden bildirilen sonuçlar ile karşılaştırılmış ve birçok Sparidae ile benzer gelişimler göstermiştir

Keywords

• D. puntazzo
• kaudal yüzgeç
• larval yetiştiricilik
• omurga
• osteolojik gelişim

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