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Título
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)
Autor
Año del Documento
2023
Editorial
Wiley
Descripción
Producción Científica
Documento Fuente
Journal of Fish Biology, 2023, vol.102, n. 3, p. 689-706
Résumé
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.
Materias Unesco
3106 Ciencia Forestal
2401 Biología Animal (Zoología)
Palabras Clave
Cyprinids
Fish migration
Open flume
Survival analysis
Volitional swimming
Water temperature
ISSN
0022-1112
Revisión por pares
SI
Patrocinador
Junta de Castilla y León (proyecto VA299B11-2)
Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 101032024
Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 101032024
Patrocinador
info:eu-repo/grantAgreement/EC/H2020/101032024
Version del Editor
Propietario de los Derechos
© 2023 The Author(s)
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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