Oxidative stress and antioxidant defenses after starvation in Oncorhynchus mykiss (Walbaum 1792) larvae reached free swimming stage
Abstract
Oxidative stress and antioxidant enzyme activities after starvation of Oncorhynchus mykiss larvae were studied. Just after yolk-sac absorption, free-swimming larvae were maintained under starved condition for a period of 21 days. Sampling of fish were carried out every week and their whole bodies were used for the analysis of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSHpx), glutathione reductase (GR), glutathione S-transferase (GST) and also analysis of malondialdehyde (MDA) and glutathione (GSH). Antioxidant enzymes activities showed that GST and CAT had the highest activity, whilts SOD and GSHpx had the lowest activity of all the enzymes assayed in 14 day free swimming starved larvae. SOD activity were reached to the peak in free swimming larvae before the appearance of higher level of MDA in 7 day starved larvae. The level of MDA was significantly higher in 7 day starved larvae and significantly lower in 14 day starved larvae. ΣPUFA and Σn-3 fatty acid have the highest level in 7 day starved larvae and lowest level in 14 day starved larvae. After the free swimming larvae, there was a significant decrease in vitamin E (α-tocopherol and δ-tocopherol) level in all starved larvae.
Keywords
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
-
Bölüm
Araştırma Makalesi
Yazarlar
Hatayi Zengin
*
0000-0002-8148-4056
Türkiye
Yayımlanma Tarihi
15 Aralık 2018
Gönderilme Tarihi
3 Nisan 2018
Kabul Tarihi
27 Temmuz 2018
Yayımlandığı Sayı
Yıl 2018 Cilt: 35 Sayı: 4
Cited By
Compensatory growth: Fitness cost in farmed fish and crustaceans
Reviews in Aquaculture
https://doi.org/10.1111/raq.12656