Columnaris disease generates substantial losses of many freshwater fish species; one is the hybrid striped bass. The ubiquitous aquatic bacterium Flavobacterium columnare can be highly effective in biofilm formation on fish skin and gills. Previous research showed a difference between columnaris disease susceptibility of hybrid striped bass (Morone saxatilis × M. chrysops) and white bass (M. chrysops). To understand these differential susceptibilities and possible mucosal relationship, we assessed total bacterial growth and biofilm formation with mucus derived from each moronid parental species: white bass and striped bass (M. saxatilis). Differential susceptibility was confirmed of the other parent species, the striped bass (M. saxatilis). In addition to intraspecies investigations, individual hybrid striped bass mucosal affects were also studied for deferential responses to bacterial growth and biofilm formation. Species‐ and concentration‐dependent differences were detected in the total growth of the bacteria to host mucus. Our data suggest that bass mucus can significantly affect biofilm formation with the F. columnare isolate tested. There appears to be a correlation between the bacteria's response of growth and biofilms and bass species susceptibility. This study provides insight into our understanding of the host–pathogen interaction between F. columnare and moronids.

中文翻译：

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白鲈（Morone chrysops），条纹鲈（Morone saxatilis）和混合条纹鲈（M. chrysops×M. saxatilis）对黄杆菌的敏感性以及黏液对细菌生长和生物膜发育的影响

柱状病使许多淡水鱼种类大量损失；一种是混合条纹鲈鱼。无处不在的水生细菌黄杆菌可以在鱼皮和g上形成生物膜非常有效。先前的研究表明，混合条纹鲈鱼（Morone saxatilis  ×  M. chrysops）和白鲈鱼（M. chrysops）的专栏病易感性有所不同。为了了解这些不同的药敏性和可能的​​粘膜关系，我们评估了总细菌的生长和生物膜的形成，这些粘液来源于每个亲代父母的物种：白色鲈鱼和条纹鲈（M. saxatilis））。其他亲本物种条纹鲈鱼（M. saxatilis）也证实了差异敏感性。除了种内调查外，还研究了单个混合条纹鲈鱼粘膜的影响对细菌生长和生物膜形成的反应。细菌和粘液的总生长中检测到物种和浓度相关的差异。我们的数据表明，通过测试F. column分离株，鲈鱼粘液可以显着影响生物膜的形成。细菌的生长和生物膜反应与低音物种易感性之间似乎存在关联。这项研究提供了我们对F. columnare和moronids之间的宿主-病原体相互作用的理解的见识。