The last remaining population of European sturgeon (Acipenser sturio) lives in the Gironde-Garonne-Dordogne (France) catchment (GGD). Captive young individuals are released into the GGD hydrosystem each year, as part of a restocking programme. This study aims to assess the health status of juveniles A. sturio to current conditions in the GGD hydrosystem, to evaluate their capacity to survive and grow in a moderately anthropized ecosystems. 3-month-old farmed sturgeons were exposed for one month in experimental conditions that mimic the environmental conditions in the Garonne and Dordogne rivers, followed by five months of depuration. After one month of exposure, fish exposed to Dordogne and Garonne waters bioaccumulated higher levels of metals and persistent organic pollutants, displayed a reduced hepato-somatic index, and had depleted levels of lipids and glycogen content in their liver, when compared with the Reference group. However, metabolic and swimming performance, as well as the costs of swimming were not impaired. After the 5 months depuration, a significant decrease of K was observed for all exposure conditions. HSI also decreased with time. The overall health status and adaptive capacity of juvenile A. sturio appeared to be maintained over the experimental 6 months’ period. Juveniles of A. sturio seem to have the adaptive capacity to survive and grow in the GGD hydrosystem, after being released as part of a restocking programme.

最后剩下的欧洲鲟鱼 ( Acipenser sturio ) 生活在吉伦特-加龙省-多尔多涅省（法国）流域 (GGD)。作为重新放养计划的一部分，圈养的年轻个体每年都会被释放到 GGD 水系统中。本研究旨在评估A. sturio幼鱼的健康状况GGD 水系统的当前条件，以评估它们在适度人类化的生态系统中生存和生长的能力。3 个月大的养殖鲟鱼在模拟加龙河和多尔多涅河环境条件的实验条件下暴露了 1 个月，然后进行了 5 个月的净化。与参考组相比，暴露于多尔多涅河和加龙河水域的鱼在暴露一个月后生物积累了更高水平的金属和持久性有机污染物，显示出肝体指数降低，并且肝脏中的脂质和糖原含量减少. 然而，代谢和游泳性能以及游泳成本并未受到影响。经过 5 个月的净化后，在所有暴露条件下都观察到 K 显着降低。恒指亦随时间下跌。A. sturio似乎在实验的 6 个月期间保持不变。A. sturio 的幼鱼在作为重新放养计划的一部分被释放后，似乎具有在 GGD 水系统中生存和生长的适应能力。