Using transparent fish to observe barotrauma associated with downstream passage through hydropower turbines [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 333.9 Other natural resources
• Thông tin xuất bản: Richland, Wash. : Oak Ridge, Tenn. : Pacific Northwest National Laboratory (U.S.) ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: p. 1612-1617 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 259850
• Chủ đề: 1. 13 hydro energy; 2. 60 applied life sciences; 3. Emphysema; 4. Gas emboli; 5. High?speed video; 6. Pressure simulation; 7. Rapid decompression; 8. Swim bladder

Tóm tắt

 During downstream passage of hydroelectric facilities, fish can be injured by rapid decompression
  this is especially noted during hydroturbine passage. The rapid decrease in pressure can cause barotrauma as undissolved gas expands according to Boyle?s law. However, it is difficult to see barotrauma occurring within the body of the fish in real time. In order to determine if transparent fish could provide greater insight into barotrauma, five species of transparent tropical fish were exposed to rapid decompressions so internal injuries could be viewed noninvasively. Before and after photos were taken to review the injuries and high speed video allowed observations of barotrauma pathways in vivo. High speed video recordings show the expansion of the swim bladder and subsequent release of gas through the mouth and gills, and into the body cavity when the swim bladder ruptured. Post-decompression photographs show that many internal injuries were visible and included hemorrhaging and the presence of emphysema within the body cavity and tissues. These observations provide new opportunities to understand the pathways and effects of barotrauma.