Van Balığında (Alburnus tarichi Guldenstadt, 1814) Üreme Göçü Sırasında Oksidatif Stresin Araştırılması

Abstract

Van Balığı, Türkiye’nin en büyük gölüne endemik anadrom bir türdür. Balıklar, her sene üremesini gerçekleştirmek için alkalin Van Gölünden göle dökülen tatlı sulara göç ederler. Balık bu göç sırasında açlık, tuz ve pH adaptasyonu gibi farklı stres faktörlerine maruz kalır. Bu çalışmada, Van Balığının üreme göçü öncesi ve sonrasında plazma, solungaç, karaciğer, beyin ve kas gibi dokularindaki total oksidan ve antioksidan, lipid peroksidasyon ve DNA hasarları karşılaştırıldı. Total oksidan durum (TOS) üreme öncesi gölden yakalanan balıkların karaciğer ve böbrek dokularında, total antioksidan durum (TAS) ise akarsudan yakalanan balıklarda karaciğerde, gölden yakalanan balıkların ise beyin ve böbrek dokularında yüksek olduğu gözlendi (P<0.05). Malondialdehit (MDA) seviyelerinin akarsudan örneklenen balıkların karaciğerinde gölden örneklenen balıklarda ise böbreklerinde daha fazla olduğu belirlendi (P<0.05). DNA hasarınin ise sadece tatlı sudan örneklenen balıkların karaciğerinde arttığı belirlendi. Sonuç olarak, Van Balığında üreme göçü sırasında karşılaşılan stres etkilerine karşı organların gösterdiği tepkiler belirlendi. 

Keywords

• Van Balığı,Oksidatif Stres,Lipid Peroksidasyon,DNA Hasarı

Investigation of Oxidative Stress in Van Fish (Alburnus tarichi Guldenstadt, 1814) During Reproductive Migration

Abstract

Van Fish is an anadromous species of endemic to Turkey's largest lake. The fish migrate to the freshwater pouring from the alkaline Lake Van to the lake for the reproduction every year. Fish are exposed to different stress factors such as fasting, salt and pH adaptation during migration. In this study, total oxidant and antioxidant, lipid peroxidation and DNA damages in tissues such as gill, liver, plasma, brain and muscle were compared before and after reproductive migration. Total oxidant status (TOS) of the fish caught in the lake before reproduction, liver and kidney tissues, total antioxidant status (TAS), fish liver caught from freshwater, fish from the lake were observed to be high in the brain and kidney tissues (P <0.05). Malondialdehyde (MDA) levels were found to be higher in the liver and kidney of the fish sampled from the freshwater and lake, respectively. (P <0.05). DNA damage was found only in the liver of fish sampled from freshwater. As a result, the reactions of the organs against stress effects encountered during reproduction migration were determined.

Keywords

• Van Fish,Oxidative stress,Lipid peroxidation,DNA damage

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