Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River

Total dissolved gas (TDG) supersaturation, which can be caused by flood discharge, results in gas bubble disease (GBD) in fish and threatens their survival downstream of dams. TDG supersaturation has become a serious environmental problem in the Yangtze River. Few studies have evaluated the effect o...

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Autores principales:	Xiaoqing Liu, Wen Su, Chenyang Cao, Zhiqin Li, Yuanming Wang, Haoran Shi, Yao Yang, Liangfang Xu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	total dissolved gas (TDG) supersaturation <i>Procypris rabaudi</i> <i>Myxocyprinus asiaticus</i> survival probability gas bubble disease (GBD) Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/73cafac498cf44f9a607928d53229e90
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spelling	oai:doaj.org-article:73cafac498cf44f9a607928d53229e902021-11-25T16:14:19ZEffects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River10.3390/ani111130612076-2615https://doaj.org/article/73cafac498cf44f9a607928d53229e902021-10-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3061https://doaj.org/toc/2076-2615Total dissolved gas (TDG) supersaturation, which can be caused by flood discharge, results in gas bubble disease (GBD) in fish and threatens their survival downstream of dams. TDG supersaturation has become a serious environmental problem in the Yangtze River. Few studies have evaluated the effect of TDG supersaturation on fish in natural rivers during periods of flood discharge. To estimate fish tolerance to TDG supersaturation under natural conditions, juvenile <i>Myxocyprinus asiaticus</i> and juvenile <i>Procypris rabaudi</i> were exposed to TDG-supersaturated water for 96 h at various depths (0–0.3 m, 0.3–1.3 m, 1.3–2.3 m and 0–2.3 m) during periods of flood discharge of Dagangshan hydropower station. The results showed that juvenile <i>Procypris rabaudi</i> and juvenile <i>Myxocyprinus asiaticus</i> exhibited obvious GBD signs. An increase in exposure time decreased survival probability of the two species. Deeper water depths can increase the tolerance of juvenile <i>Procypris rabaudi</i> to TDG supersaturation in natural rivers during periods of flood discharge while it cannot improve the survival of juvenile <i>Myxocyprinus asiaticus</i>. Compared with juvenile <i>Myxocyprinus asiaticus</i>, juvenile <i>Procypris rabaudi</i> showed weaker tolerance of TDG supersaturation in shallow water, and juvenile <i>Procypris rabaudi</i> were more vulnerable to TDG supersaturation than juvenile <i>Myxocyprinus asiaticus</i> even if the TDG level (116%) was low.Xiaoqing LiuWen SuChenyang CaoZhiqin LiYuanming WangHaoran ShiYao YangLiangfang XuMDPI AGarticletotal dissolved gas (TDG) supersaturation<i>Procypris rabaudi</i><i>Myxocyprinus asiaticus</i>survival probabilitygas bubble disease (GBD)Veterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3061, p 3061 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	total dissolved gas (TDG) supersaturation <i>Procypris rabaudi</i> <i>Myxocyprinus asiaticus</i> survival probability gas bubble disease (GBD) Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	total dissolved gas (TDG) supersaturation <i>Procypris rabaudi</i> <i>Myxocyprinus asiaticus</i> survival probability gas bubble disease (GBD) Veterinary medicine SF600-1100 Zoology QL1-991 Xiaoqing Liu Wen Su Chenyang Cao Zhiqin Li Yuanming Wang Haoran Shi Yao Yang Liangfang Xu Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River
description	Total dissolved gas (TDG) supersaturation, which can be caused by flood discharge, results in gas bubble disease (GBD) in fish and threatens their survival downstream of dams. TDG supersaturation has become a serious environmental problem in the Yangtze River. Few studies have evaluated the effect of TDG supersaturation on fish in natural rivers during periods of flood discharge. To estimate fish tolerance to TDG supersaturation under natural conditions, juvenile <i>Myxocyprinus asiaticus</i> and juvenile <i>Procypris rabaudi</i> were exposed to TDG-supersaturated water for 96 h at various depths (0–0.3 m, 0.3–1.3 m, 1.3–2.3 m and 0–2.3 m) during periods of flood discharge of Dagangshan hydropower station. The results showed that juvenile <i>Procypris rabaudi</i> and juvenile <i>Myxocyprinus asiaticus</i> exhibited obvious GBD signs. An increase in exposure time decreased survival probability of the two species. Deeper water depths can increase the tolerance of juvenile <i>Procypris rabaudi</i> to TDG supersaturation in natural rivers during periods of flood discharge while it cannot improve the survival of juvenile <i>Myxocyprinus asiaticus</i>. Compared with juvenile <i>Myxocyprinus asiaticus</i>, juvenile <i>Procypris rabaudi</i> showed weaker tolerance of TDG supersaturation in shallow water, and juvenile <i>Procypris rabaudi</i> were more vulnerable to TDG supersaturation than juvenile <i>Myxocyprinus asiaticus</i> even if the TDG level (116%) was low.
format	article
author	Xiaoqing Liu Wen Su Chenyang Cao Zhiqin Li Yuanming Wang Haoran Shi Yao Yang Liangfang Xu
author_facet	Xiaoqing Liu Wen Su Chenyang Cao Zhiqin Li Yuanming Wang Haoran Shi Yao Yang Liangfang Xu
author_sort	Xiaoqing Liu
title	Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River
title_short	Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River
title_full	Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River
title_fullStr	Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River
title_full_unstemmed	Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River
title_sort	effects of total dissolved gas supersaturation on the survival of juvenile <i>procypris rabaudi</i> and juvenile <i>myxocyprinus asiaticus</i> at varying water depth in a natural river
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/73cafac498cf44f9a607928d53229e90
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Effects of Total Dissolved Gas Supersaturation on the Survival of Juvenile <i>Procypris rabaudi</i> and Juvenile <i>Myxocyprinus asiaticus</i> at Varying Water Depth in a Natural River

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