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Physiological and morphological effects of severe hypoxia, hypoxia and hyperoxia in juvenile turbot (Scophthalmus maximus L.)
Wu, Zhihao; You, Feng; Wen, Aiyun; Ma, Deyou; Zhang, Peijun
2016
发表期刊AQUACULTURE RESEARCH
卷号47期号:1页码:219-227
文章类型Article
摘要We studied the physiological status of juvenile turbot (Scophthalmus maximus L.) under severe hypoxia (1 and 2 mg/L dissolved oxygen, DO), hypoxia (3 and 5 mg/L DO), hyperoxia (11 and 14 mg/L DO) and normoxia (7 mg/L DO, control) conditions. The respiratory rates, haematology parameters, acid-base balance status and gill structure were analysed to find the effects of different DO concentration on turbot. Fish mortality was only observed under severe hypoxia conditions. Severe hypoxia caused an increase in respiratory rates and red blood cell counts, as well as an increase in haemoglobin and haematocrit levels in the fish. In fish exposed to hypoxia conditions, the respiratory rate increased overall as the DO concentration decreased. Lower pCO(2) and HCO3- levels led to a high blood pH, while the pO(2) remained stable. In hyperoxia groups, respiratory rate decreased as the DO concentration increased. The levels of pCO(2) and HCO3- significantly increased (P < 0.05), while the pO(2) level and blood pH did not change obviously. The gill structure was damaged after prolonged exposure to hyperoxia, but no obvious damage was found in hypoxia groups. The fish that survived the hypoxia or hyperoxia treatment were able to restore the structural integrity of the gills after 14 days' recovery. The results suggest that juvenile turbots can tolerate a wide range of DO concentrations. However, even mild hyperoxia condition (11 mg/L DO), which is widely used in fish culture, has adverse effects on juvenile turbot physiology.
关键词Juvenile Turbot Scophthalmus Maximus Hyperoxia And Hypoxia Respiratory Rate Haematological Parameter Acid-base Balance Gill Structure
DOI10.1111/are.12483
收录类别SCI
语种英语
WOS记录号WOS:000367724800018
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/95206
专题实验海洋生物学重点实验室
作者单位Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
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Wu, Zhihao,You, Feng,Wen, Aiyun,et al. Physiological and morphological effects of severe hypoxia, hypoxia and hyperoxia in juvenile turbot (Scophthalmus maximus L.)[J]. AQUACULTURE RESEARCH,2016,47(1):219-227.
APA Wu, Zhihao,You, Feng,Wen, Aiyun,Ma, Deyou,&Zhang, Peijun.(2016).Physiological and morphological effects of severe hypoxia, hypoxia and hyperoxia in juvenile turbot (Scophthalmus maximus L.).AQUACULTURE RESEARCH,47(1),219-227.
MLA Wu, Zhihao,et al."Physiological and morphological effects of severe hypoxia, hypoxia and hyperoxia in juvenile turbot (Scophthalmus maximus L.)".AQUACULTURE RESEARCH 47.1(2016):219-227.
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