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CLC number: Q17

On-line Access: 2013-07-04

Received: 2012-12-29

Revision Accepted: 2013-05-04

Crosschecked: 2013-06-05

Cited: 3

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Journal of Zhejiang University SCIENCE B 2013 Vol.14 No.7 P.632-639


Effect of total dissolved gas supersaturated water on early life of David’s schizothoracin (Schizothorax davidi)

Author(s):  Rui-feng Liang, Bo Li, Ke-feng Li, You-cai Tuo

Affiliation(s):  State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China; more

Corresponding email(s):   kefengli@scu.edu.cn

Key Words:  Total dissolved gas (TDG), TDG supersaturation, David’, s schizothoracin, Hatch, Larvae

Rui-feng Liang, Bo Li, Ke-feng Li, You-cai Tuo. Effect of total dissolved gas supersaturated water on early life of David’s schizothoracin (Schizothorax davidi)[J]. Journal of Zhejiang University Science B, 2013, 14(7): 632-639.

@article{title="Effect of total dissolved gas supersaturated water on early life of David’s schizothoracin (Schizothorax davidi)",
author="Rui-feng Liang, Bo Li, Ke-feng Li, You-cai Tuo",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Effect of total dissolved gas supersaturated water on early life of David’s schizothoracin (Schizothorax davidi)
%A Rui-feng Liang
%A Bo Li
%A Ke-feng Li
%A You-cai Tuo
%J Journal of Zhejiang University SCIENCE B
%V 14
%N 7
%P 632-639
%@ 1673-1581
%D 2013
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1200364

T1 - Effect of total dissolved gas supersaturated water on early life of David’s schizothoracin (Schizothorax davidi)
A1 - Rui-feng Liang
A1 - Bo Li
A1 - Ke-feng Li
A1 - You-cai Tuo
J0 - Journal of Zhejiang University Science B
VL - 14
IS - 7
SP - 632
EP - 639
%@ 1673-1581
Y1 - 2013
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B1200364

The effect of total dissolved gas (TDG) supersaturation on fish living downstream of dams is one of the main ecological risks of high dam construction. A strategy for mitigating the negative effects is needed urgently since many high dams are under construction in the upper reaches of the Yangtze River in China. Experiments on the hatching process of david’;s schizothoracin were carried out and the results show that the hatching rate decreased with increasing TDG levels, and that most eggs hatched within a very short time in the higher TDG saturation groups. By using a stereomicroscope, damages to the head, yolk sac, body, anus, etc. were found in larvae which hatched in TDG supersaturated water. Results show that the lesion rate increased with increasing TDG levels. Furthermore, 7-d-old david’;s schizothoracin were exposed to TDG supersaturated water levels of 100%, 105%, 110%, 115%, 120%, 125%, 130%, 135%, and 140% for testing their tolerance to TDG supersaturation. We found that the median lethal concentrations (LC50) for 13, 14, 20, 35, 52, 73, and 96 h exposure were 138%, 138%, 134%, 130%, 129%, 128%, and 126%, respectively. The median lethal times (LT50) were 7.49, 11.04, 19.25, and 35.38 h for exposure to water with TDG levels of 145%, 140%, 135%, and 130%, respectively.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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