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Stress and immune responses in skin of turbot (Scophthalmus maximus) under different stocking densities

文献类型： 外文期刊

作者： Jia, Rui 1 ; Liu, Bao-Liang 1 ; Feng, Wen-Rong 1 ; Han, Cen 3 ; Huang, Bin 1 ; Lei, Ji-Lin 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr, Key Lab Sustainable Dev Marine Fisheries, Qingdao 266071, Peoples R China

2.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China

3.Dalian Ocean Univ, Coll Fisheries & Life Sci, Dalian 116023, Peoples R China

关键词： Immune response; Skin; Mucosal immunity; Stocking density; Scophthalmus maximus

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）

ISSN： 1050-4648

年卷期： 2016 年 55 卷

页码：

收录情况： SCI

摘要： Fish skin and its mucus provide the first line of defense against chemical, physical and biological stressors, but little is known about the role of skin and its mucus in immune response to crowding stress. In the present study, we investigated the stress and immune responses in skin of turbot (Scophthalmus maximus) under different stocking densities. Turbot (average weight 185.4 g) were reared for 120 days under three densities: low density (LD), medium density (MD), and high density (HD). After 120 days, fish were weighed and sampled to obtain blood, mucus and skin tissues which were used for analyses of biochemical parameters and genes expression. The results showed HD treatment significantly suppressed growth and enhanced plasma cortisol and glucose levels (P < 0.05). In mucus, the activities of lysozyme (LZM), alkaline phosphatase (ALP) and esterase in HD treatment were lower than LD and MD treatments (P < 0.05) In skin, HD treatment resulted in up-regulation in malondialdehyde (MDA) formation and heat shock protein 70 (HSP 70) mRNA level, and down-regulation in activity of superoxide dismutase (SOD) and the transcriptions of glutathione-s-transferase (GST), interleukin-1 beta (IL-1 beta), tumor necrosis factor -alpha (TNF-alpha), insulin-like growth factor- (IGF-) and LZM (P < 0.05). Overall, the data suggested that overly high stocking density was a stressor which caused an immunosuppression in skin of turbot. Moreover, this information would help to understand the skin immunity and their relation with stress and disease in fish. (C) 2016 Elsevier Ltd. All rights reserved.

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