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Hypoxia tolerance, hematological, and biochemical response in juvenile turbot (Scophthalmus maximus. L)

文献类型： 外文期刊

作者： Jia, Yudong 1 ; Wang, Jiawei 1 ; Gao, Yuntao 1 ; Huang, Bin 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, 106 Nanjing Rd, Qingdao 266071, Peoples R China

2.Qingdao Key Lab Marine Fish Breeding & Biotechnol, Qingdao 266071, Peoples R China

3.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China

关键词： Hypoxia tolerance; Hematology; Biochemistry; Turbot; Scophthalmus maximus. L

期刊名称：AQUACULTURE （ 影响因子：3.224； 五年影响因子：3.591 ）

ISSN： 0044-8486

年卷期： 2021 年 535 卷

页码：

收录情况： SCI

摘要： Hypoxia is a critical issue in aquaculture which affects the metabolism and survival of fish. The critical oxygen tension (Pcrit), loss of equilibrium (LOE), respiration frequency (RF), plasma cortisol, glucose, lactate, cholesterol (CHO), triglyceride (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), total protein, albumin, globulin, albumin/globulin, white blood cell (WBC), red blood cell (RBC), hemoglobin (Hb) and hematocrit (Hct) of turbot (male vs female) were determined during hypoxia and reoxygenation to evaluate their hypoxia tolerance and underlying physiological response. Results showed that dissolved oxygen (DO) values at Pcrit and LOE were 3.34 +/- 0.17 mg/L and 1.30 +/- 0.16 mg/L, respectively. RF significantly increased at Pcrit and LOE. Meanwhile, abnormal swimming behaviors were observed at DO values lower than 5 mg/L. Male and female showed no significant difference in above indexes. Hypoxia stress significantly increased plasma cortisol, glucose, and lactate contents at Pcrit and LOE, with the highest value obtained at LOE. Female plasma cortisol and glucose content were significantly higher than males at LOE, whereas the male lactate was significantly higher than females. Hypoxia stress did not affect the WBC number, plasma CHO, HDL, LDL levels and albumin/globulin of the male and female turbot. Plasma TG and total protein, albumin, globulin levels significantly increased at LOE and Pcrit, respectively. Female total protein significantly higher than males at Pcrit, but the opposite trend was found at LOE. RBC, Hb and Hct manifested similar cortisol results, the male and female showed no significant difference. The aforementioned parameters except for cortisol were recovered to normal levels after reoxygenation for 12 h. In conclusion, turbot manifest sex dimorphism difference during hypoxia stress-induced hematological and biochemical response.

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