Assess bacterial diversity and richness in mucus samples from the gills of Atlantic salmon in comparison to preserved or fixed gill filament tissues. Ascertain whether bacterial diversity and richness are homogeneous upon different arches of the gill basket.

中文翻译：

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大西洋鲑鱼（Salmo salar L.）鳃上细菌多样性和分布的比较：取样技术评估

与保存或固定的鳃丝组织相比，评估大西洋鲑鱼鳃粘液样本中的细菌多样性和丰富度。确定鳃篮不同拱门上的细菌多样性和丰富度是否相同。