%0 Journal Article
%A FENG Cui-xia
%A LI Na
%A YUAN Quan
%A LIU Xiao-qing
%A YANG Yao
%A SHI Hao-ran
%T Field Exposure Experiment on Tolerance and Avoidance of <i>Myxocyprinus asiaticus</i> to Total Dissolved Gas Supersaturation
%D 2020
%R 10.11988/ckyyb.201906920
%J Journal of Yangtze River Scientific Research Institute
%P 45-50
%V 37
%N 10
%X Field exposure experiment was carried out to explore the tolerance and avoidance characteristics of <i>Myxocyprinus asiaticus</i> (Chinese high fin banded shark) to TDG supersaturated water under different water depths during flood discharge. The mortality of <i>Myxocyprinus asiaticus</i> was 42.5%, 30%, 17.5%, and 15% respectively when water depth was 0~0.3, 0.3~1.3, 1.3~2.3, and 0~2.3 m in natural river course downstream of dam with a TDG of 115%~117%. A low TDG level could also lead to the death of juvenile <i>Myxocyprinus asiaticus</i>. Nevertheless, increased water depth notably reduced the mortality of the juveniles, indicating that the depth compensation could effectively alleviate the damage of TDG-supersaturated water to juvenile <i>Myxocyprinus asiaticus</i>. In addition, juvenile <i>Myxocyprinus asiaticus</i> boasts an ability of avoiding the damage cause by supersaturated TDG with the help of water depth compensation while adult <i>Myxocyprinus asiaticus</i> has no obvious such behaviors. The research results offer a reference for the formulation of protection measures on fish.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.201906920