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Table 3 Two-way contingency tests involving symbiont ribospecies, host species, bone substrates and dive dates

From: Temporal variation and lack of host specificity among bacterial endosymbionts of Osedax bone worms (Polychaeta: Siboglinidae)

A. Symbiont ribospecies by date

Date

Rs1

Rs2

Total

      

Oct-06

31

27.0

1

5.0

32

      

Jan-07

18

16.0

1

3.0

19

      

Aug-07

35

29.5

0

5.5

35

      

Dec-07

32

28.7

2

5.3

34

      

Mar-09

13

27.8

20

5.2

33

      

Total

129

 

24

 

153

      
 

G = 56.736; df = 5; P < 0.0001*

B. Symbiont ribospecies by bone type

Bone

Rs1

Rs2

Total

      

Whale

94

93.6

17

17.4

111

      

Cow

35

35.4

7

6.6

42

      

Total

129

 

24

 

153

      
 

G = 0.042; df = 1; P = 0.838

C. Host species by date

Date

rubiplumus

frankpressi

green-palp

nude-palp A

other

Total

Oct-06

22

14.0

1

7.1

1

2.7

0

2.5

8

5.6

32

Jan-07

19

8.3

0

4.2

0

1.6

0

1.5

0

3.4

19

Aug-07

10

15.3

14

7.8

0

3.0

2

2.7

9

6.2

35

Dec-07

9

14.9

0

7.6

12

2.9

10

2.7

3

6.0

34

Mar-09

7

14.5

19

7.3

0

2.8

0

2.6

7

5.8

33

Total

67

 

34

 

13

 

12

 

27

 

153

 

G = 140.298; df = 16; P < 0.0001

D. Host species by symbiont ribospecies

Ribo-species

rubiplumus

frankpressi

green-palp

nude-palp A

other

Total

Rs1

8

10.5

7

5.3

2

2.0

1

1.9

6

4.2

24

Rs2

59

56.5

27

28.7

11

11.0

11

10.1

21

22.8

129

Total

67

 

34

 

13

 

12

 

27

 

153

 

G = 2.702; df = 4; P < 0.6088

 

E. Host species by bone type

Bone

rubiplumus

frankpressi

green-palp

nude-palp A

other

Total

Whale

63

48.6

32

24.7

0

9.4

10

8.7

6

19.6

111

Cow

4

18.4

2

9.3

13

3.6

2

3.3

21

7.4

42

Total

67

 

34

 

13

 

12

 

27

 

153

 

G = 94.900; df = 4; P < 0.0001

  1. *G = log likelihood ratio; df = degrees of freedom; and P = probability.