Spanish biologists have developed a program to restore the population of sturgeon
In the past, the Atlantic sturgeon (Acipenser sturio) is considered one of the most common in Spain, species of fish, however, due to rapid migration from the country, took place in the second half of the last century, have almost disappeared from local rivers and coastal sea areas.
Nevertheless, in the Polytechnic University of Madrid has developed a program, which should help to restore the population numbers of this rare species under threat of extinction, with the introduction of it into the river Guadalquivir, Guadiana and Minho.
From a technical point of view, the most suitable for the purpose is the basin of Cuenca and SIL, where there are enough potential places for spawning. In favor of this choice also says the proximity of the estuary of the Gironde formed by the confluence of the rivers Dordogne and Garonne, where the last wild population of Atlantic sturgeon. It is here that the hand-reared specimens would better and faster to adapt to new environmental conditions. However, because of its late sexual maturity and small size, the Atlantic sturgeon is a very vulnerable species.
The main obstacles to restoration of population of sturgeon in Spain are illegal trapping for the sake of delicacy meat and eggs, pollution and other waste production of habitats, limited genetic diversity, presence of invasive species, which are carriers of various diseases and negative climate change.
According to the materials: espanarusa.com