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Hydraulics and swimming behavior of schizothorax prenanti in vertical slot fishways

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This paper presents a novel experiment for the correlation between the hydraulics and the swimming behavior of Schizothorax prenanti, a rare species of fish in southwest China, in passing a vertical slot fishway. With an acoustic Doppler velocimeter, the velocities of a physical model in the equidimension fishway in the Shaping II power station are measured. The hydraulic parameters include the hydraulic head drop, the velocity patterns and the flow rate, and the swimming behavior includes the burst-coast, the sustained swimming and the migratory path, and they are analyzed under the test conditions. The sustained swimming velocity is in the range from 0.65m/s to 1.09m/s. The estimated hydraulic head drop of each pool is calculated and is in the range from 0.08-0.11 m, which means that 2.6% slope is reasonable. For the same slope, the maximum velocity is further reduced from 1.24 m/s to 1.14 m/s by using an L shape baffle structure. The above findings are used as the basis to evaluate the hydraulic performance of the fishways, where the L shape baffle structure is expected to be effective for creating a preferencial flow for the fish. For the main stream of the pool, an “Ω” shape flow pattern is more fish-friendly, which can effectively extend the energy dissipation distance and avoid the bursting through a high velocity zone. This paper provides a useful complementary tool for practical designs.

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  1. Huang B. S., Hong C. H., Du H. H. et al. Quantitative study of degradation coefficient of pollutant against the flow velocity [J]. Journal of Hydrodynamics, 2017, 29(1): 118–123.

    Article  Google Scholar 

  2. An R., Li J., Liang R. et al. Three-dimensional simulation and experimental study for optimizing a vertical slot fishway [J]. Journal of Hydro-Environment Research, 2016, 12: 119–129.

    Article  Google Scholar 

  3. Fuentes-Perez J., Sanz-Ronda F., Paredes A. et al. Modeling water-depth distribution in vertical-slot fishways under uniform and nonuniform scenarios [J]. Journal of Hydraulic Engineering, ASCE, 2014, 140(10): 06014016.

    Article  Google Scholar 

  4. Mao X., Fu J. J., Tuo Y. C. et al. Influence of structure on hydraulic characteristics of T shape fishway [J]. Journal of Hydrodynamics, 2012, 24(5): 684–691.

    Article  Google Scholar 

  5. Wang Y., An R., Li Y. et al. Swimming performance of rock carp and prenant’s Schizothoracin acclimated to total dissolved gas supersaturated water [J]. North American Journal of Fisheries Management, 2017, 37: 1183–1190.

    Article  Google Scholar 

  6. Scott A., Henderson P. Seasonal and age-related migrations in the unexpectedly long-lived benthic fish the lesser weever, Echiichthys vipera (Cuvier, 1829) [J]. Journal of the Marine Biological Association of the United Kingdom, 2016, 96(6): 1287–1293.

    Article  Google Scholar 

  7. Van Leeuwen C., Museth J., Sandlund O. et al. Mismatch between fishway operation and timing of fish movements: A risk for cascading effects in partial migration systems [J]. Ecology and evolution, 2016, 6(8): 2414–2425.

    Article  Google Scholar 

  8. Chorda J., Maubourguet M., Roux H. et al. Two-dimensional free surface flow numerical model for vertical slot fishways [J]. Journal of Hydraulic Research, 2010, 48(2): 141–151.

    Article  Google Scholar 

  9. Boes R., Albayrak I., Kriewitz C. et al. Fish protection and downstream fish migration by means of guidance systems with vertical bars: Head loss and bypass efficiency [J]. Wasserwirtschaft, 2016, 106: 29–35.

    Google Scholar 

  10. Bermude M., Puertas J., Cea L. et al. Influence of pool geometry on the biological efficiency of vertical slot fishways. [J] Ecological Engineering, 2010, 36(10): 1355–1364.

    Article  Google Scholar 

  11. Tarrade L., Texier A., David L. et al. Topologies and measurements of turbulent flow in vertical slot fishways [C]. Hydrobiologia, Symposium on Hydropower, Mondsee, Austria, 2008, 609: 177–188.

    Google Scholar 

  12. Lennox R., Thorstad E., Diserud O. Biotic and abiotic determinants of the ascent behaviour of adult Atlantic salmon transiting passable waterfalls [J]. River Research and Applications, 2018, 34(8): 907–917.

    Article  Google Scholar 

  13. Silva A., Katopodis C., Santos J. et al. Cyprinid swimming behaviour in response to turbulent flow [J]. Ecological Engineering, 2012, 44: 314–328.

    Article  Google Scholar 

  14. Silva A., Santos J., Ferreira M. et al. Effects of water velocity and turbulence on the behaviour of Iberian barbell (Luciobarbus bocagei, Steindachner 1864) in an experimental pool-type fishway [J]. River Research and Applications, 2010 27(3): 360–373.

    Article  Google Scholar 

  15. Guiny E., Ervine D., Armstrong J. et al. Hydraulic and biological aspects of fish passes for Atlantic Salmon [J]. Journal of Hydraulic Engineering, ASCE, 2005, 131(7): 542–553.

    Article  Google Scholar 

  16. Lindberg D., Leonardsson K., Lundqvist H. Path selection of Atlantic salmon (salmo salar) migrating through a fishway [J]. River Research and Applications, 2016, 32(4): 795–803.

    Article  Google Scholar 

  17. Puertas J., Pena L., Teijeiro T. Experimental approach to the hydraulics of vertical slot fishways [J]. Journal of Hydraulic Engineering, ASCE, 2004, 130(1): 10–23.

    Article  Google Scholar 

  18. Yuan Y., Wang Y., Zhou C. et al. Tolerance of prenant’s Schizothoracin to total dissolved gas supersaturated water at varying temperature [J]. North American Journal of Aquaculture, 2018, 80: 107–115.

    Article  Google Scholar 

  19. Barboza L., Vieira L., Guilhermino L. Single and combined effects of microplastics and mercury on juveniles of the European seabass: Changes in behavioural responses and reduction of swimming velocityand resistance time [J]. Environmental Pollution, 2018, 236: 1014–1019.

    Article  Google Scholar 

  20. Downie A., Kieffer J. Swimming performance in juvenile shortnose sturgeon (Acipenser brevirostrum): The influence of time interval and velocity increments on critical swimming tests [J]. Conservation Physiology, 2017, 5: cox038.

    Article  Google Scholar 

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Correspondence to Rui-dong An.

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Project supported by the National key R&D Program of China (Grant No. 2016YFC0502207), the National Natural Science Foundation of China (Grant No. 51779162).

Biography: Rui-dong An (1983-), Male, Ph. D., Professor

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An, Rd., Li, J., Yi, Wm. et al. Hydraulics and swimming behavior of schizothorax prenanti in vertical slot fishways. J Hydrodyn 31, 169–176 (2019).

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