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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