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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
Source PublicationAQUACULTURE RESEARCH
Volume47Issue:1Pages:219-227
SubtypeArticle
AbstractWe 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.
KeywordJuvenile Turbot Scophthalmus Maximus Hyperoxia And Hypoxia Respiratory Rate Haematological Parameter Acid-base Balance Gill Structure
DOI10.1111/are.12483
Indexed BySCI
Language英语
WOS IDWOS:000367724800018
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/95206
Collection实验海洋生物学重点实验室
AffiliationChinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
First Author AffilicationKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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