Biplot from redundancy analysis (RDA) explaining the distribution of honey bee ontogenetic stages according to major bacterial strain abundance.

<p>Test of interactions between factors location and ontogenetic stage: A, crude data considering absolute DGGE band intensities; B, centred and standardized data considering relative band intensities. Abbreviations: Gil, <i>Gilliamella apicola</i>; Sno, <i>Snodgrassella alvi</i>; Lac, <i>Lactobacillus</i> sp.; Rhi, <i>Rhizobiales</i> bacterium; Fri, <i>Frischella perrara</i>, UM, unknown multiple—probable DNA heterodimer. For further strain descriptions, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0118707#pone.0118707.s005" target="_blank">S5 Fig.</a> Dotted shapes surrounding each ontogenetic stage were created as an aid in visualization. Eighteen bacterial strains occurring as major 16S rDNA DGGE bands were used for statistical analysis, while only selected strains are plotted as arrows. Same descriptions are for bands of the same sequence occurring at multiple locations of the line. Blue arrows show hypothetical developmental timeline. Its dotted part is ambiguous.