Tolerance and avoidance mechanisms of the rare and endemic fish of the upper Yangtze River to total dissolved gas supersaturation by hydropower stations

2020 ◽  
Vol 36 (7) ◽  
pp. 993-1003
Author(s):  
Yuanming Wang ◽  
Ruifeng Liang ◽  
Kefeng Li ◽  
Ran Li
Keyword(s):  
Yangtze River ◽  
Dissolved Gas ◽  
Total Dissolved Gas ◽  
Upper Yangtze River ◽  
Endemic Fish ◽  
Total Dissolved Gas Supersaturation ◽  
Hydropower Stations ◽  
The Upper Yangtze River

scholarly journals Effects of Total Dissolved Gas Supersaturation in Fish of Different Sizes and Species

2019 ◽  
Vol 16 (13) ◽  
pp. 2444 ◽  
Author(s):  
Xue ◽  
Wang ◽  
Liang ◽  
Li ◽  
Li
Keyword(s):  
Swimming Performance ◽  
Dissolved Gas ◽  
Schizothorax Prenanti ◽  
Total Dissolved Gas ◽  
Upper Yangtze River ◽  
High Supersaturation ◽  
The Difference ◽  
Total Dissolved Gas Supersaturation ◽  
Procypris Rabaudi ◽  
The Upper Yangtze River

Two endemic fish in the upper Yangtze River, the Rock Carp (Procypris rabaudi) and Prenant’s Schizothoracin (Schizothorax prenanti), were used as research objects in this study to assess the effects of total dissolved gas (TDG) supersaturation on fish of varying sizes. Fish were exposed to TDG-supersaturated water at the levels of 145, 140, 135, 130, and 125%. The results showed that fish swam slowly, responded clumsily, and then exhibited spiral swimming performance after a period of exposure to TDG-supersaturated water. Fish exhibited exophthalmos, body swelling, gill bleeding, and caudal fin bleeding when they died in the TDG-supersaturated water. With the increase in TDG supersaturation, the tolerance capacity of fish to supersaturated TDG significantly reduced. At high supersaturation, the difference in survival time between species was not significant, while fish with smaller sizes showed greater tolerance capacity. At low supersaturation, the tolerance capacity of fish was mainly affected by species, and the influence of size was relatively small. With the decrease in TDG supersaturation, the catalase (CAT) activity first increased and then decreased. Rock Carp displayed significantly less activity than Prenant’s Schizothoracin on exposure to TDG-supersaturated water. At high supersaturation levels, the CAT activity of Prenant’s Schizothoracin of small size was greater than that of large Prenant’s Schizothoracin. In contrast, small Prenant’s Schizothoracin showed less CAT activity at low TDG levels than did large individuals.

scholarly journals Length-weight Relations of 14 Endemic Fish Species from the Upper Yangtze River Basin, China

2013 ◽  
Vol 43 (2) ◽  
pp. 163-165 ◽  
Author(s):  
Jinming Wu ◽  
Lei Li ◽  
Hao Du ◽  
Hui Zhang ◽  
Chengyou Wang ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Yangtze River ◽  
Yangtze River Basin ◽  
Upper Yangtze River ◽  
Endemic Fish ◽  
The Upper Yangtze River

Structure of endemic fish assemblages in the upper Yangtze River Basin

2011 ◽  
Vol 27 (1) ◽  
pp. 59-75 ◽  
Author(s):  
Yongfeng He ◽  
Jianwei Wang ◽  
Sovan Lek ◽  
Wenxuan Cao ◽  
Sithan Lek-Ang
Keyword(s):  
River Basin ◽  
Yangtze River ◽  
Fish Assemblages ◽  
Yangtze River Basin ◽  
Upper Yangtze River ◽  
Endemic Fish ◽  
The Upper Yangtze River

Reproductive characteristics of Ancherythroculter nigrocauda, an endemic fish in the upper Yangtze River, China

2013 ◽  
Vol 79 (5) ◽  
pp. 799-806 ◽  
Author(s):  
Chunchi Liu ◽  
Xin Gao ◽  
Huanshan Wang ◽  
Huanzhang Liu ◽  
Wenxuan Cao ◽  
...  
Keyword(s):  
Yangtze River ◽  
Reproductive Characteristics ◽  
Upper Yangtze River ◽  
Endemic Fish ◽  
The Upper Yangtze River
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