Year 2013, Volume 30, Issue 3, Pages 123 - 131 2013-09-01

Doğal ve sentetik steroidlerin Gökkuşağı alabalığında, Oncorhynchus mykiss (Walbaum) gonadal gelişim, cinsiyet dönüşümü ve büyüme üzerine etkileri.
Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum).

Erdal Yılmaz [1] , Şehriban Çek [2] , Yavuz Mazlum [3]

404 1493

Tamamı dişi salmonid stokların üretiminde sentetik cinsiyet hormonlarının kullanımına dayanan erkekleştirme uygulamaları gibi dolaylı yöntemler yaygın bir şekilde kullanılmaktadır. Ancak söz konusu sentetik hormonların toksik etkiler ve yüksek maliyetler gibi dezavantajları bulunmaktadır. Bu bakımdan mevcut araştırmada, doğal steroidlerin kullanımı yolu ile tamamı dişi alabalık populasyonlarının üretimi için dolaylı yöntemlerin geliştirilmesi amaçlanmıştır. Bu çalışmada 7000 prelarval gökkuşağı alabalığı yedi tanka eşit olarak bölünmüş ve bunlar sentetik hormonlar (3 ve 6 mg metiltestosteron -MT ve testosteron -T kg-1yem) ve doğal hormonlar (50 ve 100 mg Tribulus terrestris -TT kg-1) içeren ticari alabalık yavru yemleri (Skretting, France) ile keseli dönemden sonraki 90 gün boyunca beslenmiştir. 90 günlük ilk besleme periyodunun sonunda balıklar cinsiyetlerin makroskopik ve histolojik yöntemlerle belirlenebildiği döneme kadar hormon içermeyen ticari alabalık yemi ile beslenmiştir. Araştırma sonunda 50 ve100 mg/ kg Tribulus terrestris (TT) içeren yemle beslenen balıkların sıra ile %55 ve 63’ü erkek iken, 3 ve 6 mg/ kg testosteron (T) içeren yemle beslenen balıkların sıra ile %51 ve 53 oranında erkek olduğu bulunmuştur. Bu durum Tribulus terrestris’in testosterona göre alabalıkların doğrudan erkekleştirilmesinde daha etkin olduğunu fakat gruplar arasında fark bulunmamıştır. Ayrıca bu araştırma, Tribulus terrestris içeren (100 mg/kg mg/ kg yemde) yemlerle beslenen alabalıkların diğer deneme gruplarındaki balıklara kıyasla daha yüksek canlı ağırlığa ulaştığını bildiren ilk çalışmadır. Kontrol ve deneme grupları arasında farklılaşmamış gonad yapıları bakımından önemli bir farklılık gözlenmemiştir. Sonuç olarak araştırmada, daha yüksek cinsiyet dönüşüm ve büyüme oranlarına ulaşmak için Tribulus terrestris’in daha yüksek konsantrasyonlarının (150, 200, 250 mg kg-1) etkilerini araştırılmalıdır. Ayrıca bu konsantrasyonların gökkuşağı alabalığında, diğer salmonid ve ticari türlerde kan testosteron seviyelerinin yanısıra gonad yapısına olan etkileri de belirlenmelidir
Testosterone, Tribulus terrestris, rainbow trout, histoloji, erkekleştirme, büyüme
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Primary Language tr
Journal Section Articles
Authors

Author: Erdal Yılmaz

Author: Şehriban Çek

Author: Yavuz Mazlum

Bibtex @ { egejfas67586, journal = {Ege Journal of Fisheries and Aquatic Sciences}, issn = {1300-1590}, eissn = {2148-3140}, address = {Ege University}, year = {2013}, volume = {30}, pages = {123 - 131}, doi = {}, title = {Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum).}, key = {cite}, author = {Yılmaz, Erdal and Çek, Şehriban and Mazlum, Yavuz} }
APA Yılmaz, E , Çek, Ş , Mazlum, Y . (2013). Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum).. Ege Journal of Fisheries and Aquatic Sciences, 30 (3), 123-131. Retrieved from http://www.egejfas.org/issue/4988/67586?publisher=ege%3Fpublisher%3Dege
MLA Yılmaz, E , Çek, Ş , Mazlum, Y . "Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum).". Ege Journal of Fisheries and Aquatic Sciences 30 (2013): 123-131 <http://www.egejfas.org/issue/4988/67586?publisher=ege%3Fpublisher%3Dege>
Chicago Yılmaz, E , Çek, Ş , Mazlum, Y . "Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum).". Ege Journal of Fisheries and Aquatic Sciences 30 (2013): 123-131
RIS TY - JOUR T1 - Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum). AU - Erdal Yılmaz , Şehriban Çek , Yavuz Mazlum Y1 - 2013 PY - 2013 N1 - DO - T2 - Ege Journal of Fisheries and Aquatic Sciences JF - Journal JO - JOR SP - 123 EP - 131 VL - 30 IS - 3 SN - 1300-1590-2148-3140 M3 - UR - Y2 - 2019 ER -
EndNote %0 Ege Journal of Fisheries and Aquatic Sciences Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum). %A Erdal Yılmaz , Şehriban Çek , Yavuz Mazlum %T Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum). %D 2013 %J Ege Journal of Fisheries and Aquatic Sciences %P 1300-1590-2148-3140 %V 30 %N 3 %R %U
ISNAD Yılmaz, Erdal , Çek, Şehriban , Mazlum, Yavuz . "Effects of synthetic and natural steroids on the growth, sex reversal and gonadal development of rainbow trout, Oncorhynchus mykiss (Walbaum).". Ege Journal of Fisheries and Aquatic Sciences 30 / 3 (September 2013): 123-131.