Effects of pH changes on blood physiology, antioxidant responses and Ig M of juvenile olive flounder, Paralichthys olivaceus

Aquaculture Reports

Seok-Ryel Kim¹  Hee Woong Kang²  Jun-Hwan Kim³  Su Kyoung Kim⁴ 

[1]Corresponding author.

[2]Devlopment, Taean, 32132, Republic of Korea

[3]Department of Aquatic Life and Medical Science, Sun Moon University, Asan-si, Republic of Korea

[4]

[5]National Institute of Fisheries Science, West Sea Fisheries Research Institute, Fisheries Research &

关键词: Aquatic animals;    pH values;    Fish physiological responses;    pH stress;   

DOI  :  

来源: DOAJ

【 摘 要 】

Our aim was to assess the blood physiology and antioxidant and immune responses of the olive flounder (Paralichthys olivaceus) following pH changes in the water. P. olivaceus (mean weight 95.7 ± 6.5 g and mean length 21.4 ± 1.3 cm) were exposed to the different pH levels (pH 5, 6, 7, 8, 9, and 10) for 2 weeks. Blood physiology parameters, such as the levels of hematocrit, magnesium, glucose, glutamic oxalate transaminase (GOT), glutamic pyruvate transaminase (GPT), and alkaline phosphatase (ALP) were significantly altered by low (acidic) pH or high (alkaline) pHs. With regard to antioxidant responses, the superoxide dismutase (SOD) and glutathione S-transferase (GST) activities in the liver were significantly altered by the pH changes, but there were no significant changes of these activities in the gill tissues. The immunoglobulin M levels increased significantly at pH 10 after 2 weeks. The results of this study suggest that pH changes (acidity: < pH 6, alkalinity:> pH 9) affect blood physiology, as well as antioxidant and immune responses in P. olivaceus.

【 授权许可】

Unknown