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Table 2 Effects of treatments on density, diversity and composition of nest and feather bacterial communities compared to the control

From: Uropygial gland size and composition varies according to experimentally modified microbiome in Great tits

 

Total bacterial densities

Keratinolytic bacterial densities

Nests

Estimate ± SE

Df

T

P

Estimate ± SE

Df

T

P

  TSB

0.87 ± 0.38

32

2.30

0.028*

1.36 ± 0.62

32

2.19

0.036*

  Nisin

−1.70 ± 0.46

33

−3.67

<0.001***

−2.68 ± 0.73

33

−3.65

<0.001***

Feathers

Estimate ± SE

Df

T

P

Estimate ± SE

Df

T

P

  TSB

1.64 ± 0.61

36

2.69

0.011*

2.53 ± 0.52

37

4.90

<0.001***

  Nisin

0.87 ± 0.39

34

2.20

0.035*

0.99 ± 0.41

35

2.43

0.021*

 

Bacterial diversity

Bacterial composition

Nests

Estimate ± SE

Df

T

P

SumSq

Df

F

P

  TSB

0.60 ± 0.28

30

2.14

0.040*

0.80

30

3.59

0.005**

  Nisin

−0.01 ± 0.29

30

−0.02

0.981

0.16

30

0.65

0.715

Feathers

Estimate ± SE

Df

T

P

SumSq

Df

F

P

  TSB

0.41 ± 0.25

37

1.62

0.113

1.17

37

7.26

0.002**

  Nisin

−0.07 ± 0.32

35

−0.23

0.82

0.08

35

0.51

0.767

  1. Significant effects are annotated by *p<0.05, **p<0.01, ***p<0.001.