PDF(Pubmed)
Abstract：
Nowadays, European seabass (Dicentrarchus labrax) aquaculture is undergoing a significant expansion. Nevertheless, the aquaculture industry is plagued by vibriosis. The spatial and temporal dynamics of Vibrio harveyi were studied on a European seabass farm in northern France during seven months of 2022. Concrete specimens were suspended and water was pumped from different depths (0.3 m, 2.15 m and 4 m deep), providing insights into the biofilm and planktonic V. harveyi dynamics. The abundances of V. harveyi, in the biofilm and free-living forms, were positively correlated. The water parameters revealed seasonal fluctuations in temperature, pH, and salinity, with no significant differences observed across the water column. Quantification of V. harveyi revealed no significant differences between depths, but seasonality, with peak abundances observed in August, correlated with temperature increases. Principal component analysis identified temperature as a primary driver, but also additional parameters, such as salinity and pH. Vibriosis occurred during the sampling period, providing valuable insights into the conditions before, during, and after the outbreaks. This study underscores the importance of understanding V. harveyi behaviour in aquaculture, particularly in the context of global warming, for effective disease management and sustainable practices.
摘要：
如今,欧洲鲈鱼（Dicentrarchuslabrax）水产养殖正在经历重大扩张。然而，水产养殖业受到弧菌病的困扰。2022年的七个月期间，在法国北部的欧洲海底农场研究了哈维氏弧菌的时空动态。将混凝土试样悬浮，并从不同深度（0.3m，2.15米和4米深)，提供对生物膜和浮游V.harveyi动力学的见解。V.harveyi的丰富，在生物膜和自由生活形式中，呈正相关。水参数揭示了温度的季节性波动，pH值,和盐度，在整个水柱中没有观察到显着差异。V.harveyi的定量显示深度之间没有显着差异，但是季节性，在8月份观测到峰值丰度，与温度升高有关。主成分分析将温度确定为主要驱动因素，但也有额外的参数，例如盐度和pH。弧菌病发生在采样期间，提供对以前情况的有价值的见解，during,在爆发之后。这项研究强调了了解V.harveyi行为在水产养殖中的重要性，特别是在全球变暖的背景下，有效的疾病管理和可持续的做法。
