One of the major threats to the seabass (Dicentrarchus labrax) aquaculture sector is the development of vibriosis, a disease caused mainly by bacteria from the family Vibrionaceae, especially Vibrio harveyi. Given the relationship between abundance in the surrounding environment and prevalence in fish, monitoring the presence of V. harveyi in rearing water and biofilms over time may help better understand the dynamics of the pathogen and factors that increase the risk of vibriosis outbreaks.

In this study, the dynamics and spatial patterns of cultivable Vibrionaceae and V. harveyi in water and biofilms from rearing tanks and in the cold- and hot-water inlets supplying the farm were monitored for 7 months, from April to October 2018. Several potential seabass pathogens were isolated: Photobacterium damselae, Vibrio alginolyticus, V. harveyi, Vibrio owensii and Vibrio rotiferianus. Nevertheless, V. harveyi remained the most problematic pathogen: its constant presence throughout the sampling campaign represents a risk for vibriosis outbreaks. More precisely, the potential pathogen has been found in rearing tanks and water inlets supplying the farm, from biofilm and water samples. Besides, the positive correlation between water temperature and the abundance of V. harveyi suggests that increasing water temperature may increase the risk for vibriosis outbreaks in fish farms. Overall, obtaining qualitative data regarding the relative diversity of viable culturable Vibrionaceae and quantitative data on the abundance of V. harveyi over time in a seabass aquaculture facility is the essential first step for designing new solutions to manage vibriosis.

对鲈鱼（Dicentrarchus labrax）水产养殖部门的主要威胁之一是弧菌病的发展，弧菌病是一种主要由弧菌科尤其是哈维弧菌引起的细菌引起的疾病。考虑到周围环境的丰度与鱼类流行之间的关系，随着时间的推移监测饲养水和生物膜中哈氏弧菌的存在可能有助于更好地了解病原体的动态以及增加发生弧菌病风险的因素。

在这项研究中，从2018年4月至2018年10月，对养殖池中的水和生物膜以及向农场供应的冷热水入口中可培养的弧菌科和哈氏弧菌的动态和空间格局进行了为期7个月的监测。分离出了鲈鱼的病原体：damselae细菌，解藻弧菌，哈氏弧菌，owensii弧菌和rotiferianus弧菌。尽管如此，哈维（V. harveyi）仍然是问题最严重的病原体：在整个采样活动中持续存在，表示存在弧菌病暴发的风险。更准确地说，已经在生物膜和水样的饲养池和为农场提供水的进水口中发现了潜在的病原体。此外，水温与哈维弧菌的丰度之间呈正相关关系，这表明水温升高可能会增加养鱼场发生弧菌病的风险。总体而言，在鲈鱼水产养殖设施中获得有关可行可培养弧菌科的相对多样性的定性数据以及随着时间的推移关于哈维氏弧菌丰度的定量数据是设计新的解决弧菌病解决方案必不可少的第一步。