RT info:eu-repo/semantics/article
T1 Effect of thermo‐velocity barriers on fish: influence of water temperature, flow velocity and body size on the volitional swimming capacity of northern straight‐mouth nase (Pseudochondrostoma duriense)
A1 García Vega, Ana
A1 Ruiz Legazpi, Jorge
A1 Fuentes Pérez, Juan Francisco
A1 Bravo Córdoba, Francisco Javier
A1 Sanz Ronda, Francisco Javier
K1 Cyprinids
K1 Fish migration
K1 Open flume
K1 Survival analysis
K1 Volitional swimming
K1 Water temperature
K1 3106 Ciencia Forestal
K1 2401 Biología Animal (Zoología)
AB Water temperature and flow velocity directly affect the fish swimming capacity, and thus, both variables influence the fish passage through river barriers. Nonetheless, their effects are usually disregarded in fishway engineering and management. This study aims to evaluate the volitional swimming capacity of the northern straight-mouth nase (Pseudochondrostoma duriense), considering the possible effects of water temperature, flow velocity and body size. For this, the maximum distance, swim speed and fatigue time (FT) were studied in an outdoor open-channel flume in the Duero River (Burgos, Spain) against three nominal velocities (1.5, 2.5 and 3 m s−1) and temperatures (5.5, 13.5 and 18.5°C), also including the changes between swimming modes (prolonged and sprint). Results showed that a nase of 20.8 cm mean fork length can develop a median swim speed that exceeds 20.7 BL s−1 (4.31 m s−1) during a median time of 3.4 s in sprint mode, or 12.2 BL s−1 (2.55 m s−1) for 23.7 s in prolonged mode under the warmest scenario. During prolonged swimming mode, fish were able to reach further distances in warmer water conditions for all situations, due to a greater swimming speed and FT, whereas during sprint mode, warmer conditions increased the swim speed maintaining the FT. In conclusion, the studied temperature range and flow velocity range influence fish swimming performance, endurance and distance travelled, although with some differences depending on the swimming mode. The provided information goes a step forward in the definition of real fish swimming capacities, and in turn, will contribute to establish clear passage criteria for thermo-velocity barriers, allowing the calculation of the proportion of fish able to pass a barrier under different working scenarios, as well designing of the optimized solutions to improve the fish passage through river barriers.
PB Wiley
SN 0022-1112
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/58487
UL https://uvadoc.uva.es/handle/10324/58487
LA eng
NO Journal of Fish Biology, 2023, vol.102, n. 3, p. 689-706
NO Producción Científica
DS UVaDOC
RD 10-nov-2024