Installation d'un élevage d'esturgeon menacés de façon critique, l'Acipenser sturio, avec une attention particulière sur les gros poissons

Abstract

Over-exploitation, damming, dredging and most probably deterioration in hydrological characteristics led to a dramatic decrease of the European Atlantic sturgeon, Acipenser sturio, population in the 1960s. Maintaining a farmed broodstock is a way for regular provision of fingerlings. Due to uncertainty of long-term maintenance of the wild population, a conservation objective was recently added. All possibilities were investigated to increase the rate of success.The first two are based on the acclimation of small and large wild fish to farm conditions. The third concerns the rearing of artificially-produced fingerlings.The present paper deals mainly with the large wild fish beginning in late 1993.Cette initiative est prise dans un but de conservation. La première étape a consisté en l'acclimatation des petites et gros poissons aux condition d'élevage et la troisième à la production artificielle de lingues. Cet article porte essentiellement sur les gros poissons