ABSTRACT: This note describes the first detection of the bacteria Francisella halioticida in mussels Mytilus spp. from locations in Normandy and northern Brittany (France) experiencing high mussel mortalities, while it was not detected in the Bay of St Brieuc (northern Brittany), an area which was not affected by abnormal mussel mortality. The distribution of the bacteria in mussels seems to be restricted to inflammatory granulomas as observed in Yesso scallops Mizuhopecten yessoensis from Canada and Japan. F. halioticida has been identified as being involved in mass (>80%) mortality of abalones Haliotis gigantea in Japan and high (up to 40%) mortality of Yesso scallops Mizuhopecten yessoensis in Canada as well as in lesions reducing marketability of Yesso scallops in Japan. The impact of this bacterium on the health of mussels needs to be investigated in future research, especially since the cause of high mussel mortalities that have been occurring in France for the past few years is still undetermined.

中文翻译：

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贻贝Mytilus spp中首次发现了盐生弗朗西斯菌。在法国遇难。

摘要：本说明描述了贻贝Mytilus spp中首次发现嗜盐弗朗西斯菌的细菌。来自贻贝死亡率很高的诺曼底和布列塔尼北部（法国）地区，而在未受贻贝异常死亡率影响的圣布里厄克湾（北布列塔尼北部）未发现。如在加拿大和日本的Yesso扇贝Mizuhopecten yessoensis中观察到的，贻贝中细菌的分布似乎仅限于炎性肉芽肿。F. halioticida已被鉴定为参与质量（> 80％）鲍鱼的死亡率鳆在日本和高（高达40％）虾夷扇贝的死亡率Mizuhopecten扇贝在加拿大以及在病灶中降低了日本Yesso扇贝的适销性。这种细菌对贻贝健康的影响需要在未来的研究中进行调查，特别是因为过去几年法国发生的贻贝死亡率高的原因尚未确定。