Capacidad de nado de ciprínidos potamódromos ibéricosexperimentación en el canal de nado de Vadocondes

Abstract

The anthropogenic alteration in fluvial ecosystems is high, mainly due to the creation of transverse barriers (dams, weirs, gauging stations, drainage pipes, etc.), which modify their longitudinal connectivity, causing, among other impacts, the fragmentation of the habitat. This problem affects the migrating fish, because it can suppose a blockade or delay in their movements, reducing their habitats, threatening the viability and abundance of their populations, even reaching their extinction. The swimming capacity of the fish (swimming speed, fatigue time and distance traveled) is one of the factors that determine their survival. A system that allows to establish it, in natural conditions, are the voluntary open channel flume. In the flume of Vadocondes (Burgos) the swimming capacity has been determined, and how environmental and biometric factors influence in the swimming capacity, of two of the main species of cyprinids potamodromous of the Iberian Peninsula (Iberian barbel –Luciobarbus bocagei– and northern straight-mouth nase –Pseudochondrostoma duriense–, with the aim of being able to develop adequate technical and scientific guidelines, which guarantee an optimal and effective design of the fishways, which has a positive impact on the conservation of their populations.