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. 2008 Apr 18;74(12):3619–3625. doi: 10.1128/AEM.02812-07

TABLE 2.

Assignment of clones to different clades of Archaea and the number of positive data sets for each cladea

Clade Detection in total rumen contents
Detection in protozoan-associated archaea
Mean (%) Maximum (%) No. of data sets (n = 12) Mean (%) Maximum (%) No. of data sets (n = 5)
Methanomicrobium 14.9 85.6 4 20.1 80.0 3
Methanimicrococcus 2.4 14.6 3 4.0 20.0 1
M. gottschalkii 33.6 81.2 10 42.9 98.6 3
M. smithii 0.1 0.8 1 0 NDc 0
M. ruminantium 27.3 60.0 10 12.5 62.6 1
M. wolinii 0.1 1.0 1 2.6 12.8 1
Other Methanobrevibacterb 0.5 5.6 1 0.6 2.9 1
Methanosphaera 3.7 26.8 5 1.9 4.0 4
Methanobacterium 0.2 2.9 1 0.4 1.1 2
RCC 15.8 80.8 5 15.1 74.1 2
Qld26 1.3 8.7 3 0 ND 0
Crenarchaeota 0.2 2.9 1 0 ND 0
a

The clades are illustrated in Fig. 1. n, number of data sets (see Table 1).

b

Not a phylogenetically coherent clade.

c

ND, not detected in any data set.