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Water
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Response Behavior of Fish to Total Dissolved Gas
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Response Behavior of Fish to Total Dissolved Gas

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Biodiversity and Functionality of Aquatic Ecosystems".

Deadline for manuscript submissions: closed (10 August 2022) | Viewed by 1772

Special Issue Editors

Prof. Dr. Kefeng Li

E-Mail Website
Guest Editor
State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University, Chengdu, China
Interests: environmental hydraulics; TDG supersaturation; ecological flow; water temperature stratification; effect of small hydropower; fishway; microplastics
Dr. Yuanming Wang

E-Mail Website
Guest Editor
State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China
Interests: fish swimming and behaviour; fish bypass technology; river ecological flow regime; water quality monitoring and assessment

Special Issue Information

Dear Colleagues,

Total dissolved gas (TDG) in a water system is supersaturated when the pressures of atmospheric gases exceed the barometric pressure. Such a situation can occur during water discharge from high dams, air injection into water under huge pressure, thermal increases in water, or due to other natural causes. TDG supersaturation has a negative impact on fish species, causing them to suffer from gas bubble disease, potentially resulting in mortality.

We are launching a Special Issue entitled “Response Behavior of Fish to Total Dissolved Gas” calling for attention on TDG supersaturation. This Special Issue focuses on the response mechanisms of fish to TDG supersaturation. Studies on the reproduction, growth, survival, movement, and other basic behaviors of fish of various species and at various life stages in TDG supersaturated water will be collected in this Special Issue. We also welcome studies exploring effective measures to mitigate the negative impact of TDG on fish. In addition, studies revealing the stress mechanisms of TDG supersaturation in fish with respect to biology and physiology are also encouraged.

Prof. Dr. Kefeng Li
Dr. Yuanming Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • TDG supersaturation
  • fish species
  • response mechanism
  • reproduction
  • growth
  • survival
  • movement
  • mitigation measures
  • stress

Published Papers (1 paper)

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Research

11 pages, 1771 KiB  
Article
Tolerance and Growth of Adult Schizothorax prenanti Exposed and Re-Exposed to Supersaturated Gas Downstream of a Dam
by Quan Yuan, Kefeng Li, Yuanming Wang, Qianfeng Ji and Ruifeng Liang
Water 2022, 14(16), 2501; https://doi.org/10.3390/w14162501 - 14 Aug 2022
Viewed by 1320
Abstract
Total dissolved gas (TDG) is suggested to be one possible explanation for the extensive mortality of endemic fish suffered from gas bubble disease (GBD). We investigated the effects of water depth on adult Schitzothorax prenanti susceptibility to GBD in TDG supersaturated water 11.5 [...] Read more.
Total dissolved gas (TDG) is suggested to be one possible explanation for the extensive mortality of endemic fish suffered from gas bubble disease (GBD). We investigated the effects of water depth on adult Schitzothorax prenanti susceptibility to GBD in TDG supersaturated water 11.5 km downstream of Dagangshan dam in a two-year (2016–2017) live cage study. The probability of survival significantly increased at greater depth. The mortality of fish at 1–2 m was reduced to 50% of that at 0–1 m and the mortality rate for fish at 2–3 m was reduced to 25% of that at 0–1 m. Fish that survived in-situ TDG exposure in 2016 were relocated to equilibrated water and observed for 274 d to investigate sublethal effects of GBD. The surviving fish showed a substantial reduction in growth compared to the control group. During the flood discharge period in 2017, fish were re-exposed to TDG supersaturated water after a period of recovery (274 d) in equilibrated water. The mortality rate of re-exposed fish decreased to 35% compared to newly introduced fish. Our results contribute to the protection of aquatic organisms and the improvement of eco-friendly hydroelectric dam operations in the Yangtze River. Full article
(This article belongs to the Special Issue Response Behavior of Fish to Total Dissolved Gas)
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