Seasonal variations in the intestinal microbiota of farmed Atlantic salmon (Salmo salar L.).

摘要

Seasonal variations in seawater conditions, including temperature and bacterial ￡ora populations could be expected to in￡uence the intestinal microbiota of ￠sh. In order to improve the understanding of the in- ￡uence of environment and diet on the bacterial composition, further studies of farmed Atlantic salmon (Salmo salar L.) intestinal microbiota are required. It has been reported that through manipulation of dietary composition, the microbiota can potentially be changed and controlled (Ring, Sperstad, Myklebust, Refstie & Krogdahl 2006; Bakke-McKellep, Penn, Salas, Refstie, Sperstad, Landsverk, Ring & Krogdahl 2007; Ring, Sperstad, Kraugerud & Krogdahl 2008). As diet, also geographic location may in￡uence the intestinal microbiota (Holben,Williams, Gilbert, Saarinen, Sarkilahti & Apajalahti 2002), and seasonal variations could exert a similar e?ect. Recently, the bacterial ￡ora of Atlantic salmon have been widely studied (e.g. Holben et al.2002; Bakke-McKellep et al. 2007; Hovda, Lunestad, Fontanillas & Rosnes 2007; Liu, Zhou, Yao, Shi, He, Hlvold & Ring 2008; Ring et al. 2008).