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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.