Departamento de Microbiología y Parasitología, Facultad de Biología - CIBUS, Universidad de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain.
J Fish Dis. 2014 Mar;37(3):209-17. doi: 10.1111/jfd.12098. Epub 2013 Mar 18.
Hatchery culture of the razor clam, Solen marginatus (Pulteney), has recently been developed in Galicia (NW Spain). However, recurrent episodes of mortalities of larval and post-larval cultures have been recorded during the course of various studies. The disease signs were similar to those described for other bivalve species in outbreaks caused by bacteria of the genus Vibrio. In this article, we present the results of microbiological monitoring of two batches of razor clams with different survival rates. All fermentative isolates were identified as members of the Splendidus clade within the genus Vibrio. Some of these isolates, identified as Vibrio splendidus-like, were clearly associated with the batch suffering mortalities, indicating their possible role as pathogens. Similar strains were found in the broodstock, suggesting vertical transmission of these bacteria. This is the first study of the microbiota associated with hatchery culture of S. marginatus, and the results will provide useful information for the optimization of a protocol for hatchery culture of this bivalve species.
褶牡蛎（Solen marginatus）的人工育苗养殖最近在加利西亚（西班牙西北部）发展起来。然而，在各种研究过程中，记录到幼虫和幼贝养殖的反复死亡事件。疾病症状与其他双壳贝类在由弧菌属细菌引起的爆发中所描述的相似。在本文中，我们介绍了对两批具有不同存活率的褶牡蛎进行微生物监测的结果。所有发酵分离物均被鉴定为弧菌属中 Splendidus 分支的成员。其中一些被鉴定为类灿烂弧菌的分离物与遭受死亡的批次明显相关，表明它们可能是病原体。在亲贝中也发现了类似的菌株，表明这些细菌存在垂直传播。这是与褶牡蛎育苗养殖相关的微生物组的首次研究，研究结果将为优化该贝类的育苗养殖方案提供有用信息。
