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Table 2 Bacterial groups at > 1% mean relative abundance among the 3 breed groups of healthy dogs at phylum, family and genus level

From: Variations in facial conformation are associated with differences in nasal microbiota in healthy dogs

Taxon Group DL Group B Group T
Phylum Mean rel. Freq. (%) SD (%) Tukey’s multiple comparisons test (p < 0.05) Mean rel. Freq. (%) SD (%) Tukey’s multiple comparisons test (p < 0.05) Mean rel. Freq. (%) SD (%) Tukey’s multiple comparisons test (p < 0.05)
Family
Genus
Proteobacteria 73.5 27.6 A*** 53.3 25.6 B 81.1 12.8 A****
Moraxellaceae 48.9 38.1 A**** 16.4 15.7 B 53.5 30.1 A****
Moraxella 48.9 38.1 A**** 16.3 15.7 B 53.0 30.7 A****
Pseudomonadaceae 6.8 13.0 A 10.0 19.2 AB 16.0 27.1 B**
Pseudomonas 6.8 13.0 NS 10.0 19.2 NS 15.8 26.8 NS
Pseudomonadales_fa 3.1 10.0 A** 14.0 19.1 B 0.6 1.2 A***
Pseudomonadales_ge 3.1 10.0 A** 14.0 19.1 B 0.6 1.2 A**
Cardiobacteriaceae 12.8 26.7 A** 1.9 3.0 B 8.8 14.2 AB
Suttonella 12.8 26.7 A** 1.9 3.0 B 8.8 14.2 AB
Pasteurellaceae 0.2 0.6 NS 5.8 6.3 NS 0.2 0.5 NS
Pasteurellaceae_ge 0.1 0.5 NS 4.7 5.6 NS 0.2 0.5 NS
Neisseriaceae 0.4 1.7 NS 3.2 5.5 NS 0.3 0.8 NS
Conchiformibius 0.4 1.7 NS 3.1 5.3 NS 0.3 0.7 NS
Burkholderiaceae 0.4 0.8 NS 1.0 2.1 NS 0.5 1.1 NS
Gammaproteobacteria_fa 0.7 0.8 NS 0.4 0.5 NS 1.0 1.0 NS
Gammaproteobacteria_ge 0.7 0.8 NS 0.4 0.5 NS 1.0 1.0 NS
Actinobacteria 4.7 5.2 A* 18.2 19 B 8.8 14.2 AB
Corynebacteriaceae 0.6 1.2 NS 4.9 7.7 NS 0.6 1.0 NS
Corynebacterium_1 0.2 0.4 NS 2.6 5.6 NS 0.3 0.8 NS
Corynebacterium 0.4 1.2 NS 1.8 5.2 NS 0.2 0.7 NS
Micrococcaceae 0.2 0.5 NS 6.1 16.2 NS 0.4 0.7 NS
Rothia 0.1 0.3 NS 6.0 16.2 NS 0.1 0.4 NS
Microbacteriaceae 2.9 4.7 NS 5.7 12.0 NS 6.5 8.7 NS
Leucobacter 2.4 4.6 NS 5.7 12.0 NS 6.4 8.7 NS
Tenericutes 12.8 23 NS 11.4 25.8 NS 3.7 10.8 NS
Mollicutes_fa 12.6 23 A 11.4 25.8 AB 3.7 10.7 B*
Mollicutes_ge 12.6 23 NS 11.4 25.8 NS 3.7 10.7 NS
Firmicutes 6.2 8.7 NS 12.3 14.5 NS 3.6 4.2 NS
Streptococcaceae 1.7 4.1 NS 4.8 7.1 NS 0.3 1.1 NS
Streptococcus 1.7 4.1 NS 4.8 7.1 NS 0.3 1.1 NS
Staphylococcaceae 1.3 2.8 NS 3.3 10.3 NS 1.6 3.1 NS
Staphylococcus 1.2 2.8 NS 3.3 10.3 NS 1.6 3.1 NS
Aerococcaceae 0.8 3.1 NS 1.6 3.2 NS 0.0 0.1 NS
Abiotrophia 0.7 3.0 NS 1.5 3.1 NS 0.0 0.1 NS
Carnobacteriaceae 1.1 2.6 NS 0.0 0.2 NS 0.0 0.0 NS
Bacillales_Family_XI 0.2 0.8 NS 1.0 1.9 NS 0.0 0.1 NS
Gemella 0.2 0.8 NS 1.0 1.9 NS 0.0 0.1 NS
Clostridiales_Family_XI 0.8 1.7 NS 0.5 0.9 NS 1.0 1.7 NS
Helcococcus 0.7 1.7 NS 0.4 0.8 NS 1.0 1.7 NS
Bacteroidetes 2.5 6.3 NS 3.3 4.3 NS 1.7 3.5 NS
Porphyromonadaceae 0.9 4.1 NS 1.7 3.3 NS 1.0 3.3 NS
Porphyromonas 0.9 4.1 NS 1.7 3.3 NS 1.0 3.3 NS
Weeksellaceae 1.3 3.3 NS 0.8 1.0 NS 0.5 0.9 NS
Fusobacteria 0.1 0.2 NS 1.0 1.8 NS 0.2 0.6 NS
  1. Mean relative percentages (mean rel. freq) and standard deviation (SD) of the most abundant bacterial groups, annotated to the level of phylum, family and genus, based on sequencing of the V1-V3 region of the 16S rRNA gene
  2. Group DL = mesocephalic or dolichocephalic dogs of medium to large breeds
  3. Group B = brachycephalic dogs of small breeds
  4. Group T = mesocephalic or dolichocephalic terrier dogs of small breeds
  5. A,B: Operational taxonomic units not sharing a common letter between breed groups differ significantly. *p < 0.05; **p < 0.01; ***p < 0.001; ****p < 0.0001; NS not significant