Table 2. Collecting Sites in North America and Canada of the Most Frequently Collected Tetrahymena Species
West
Mountain
Southern
Midwest
SE
North
Midwest
NE
New England
Canada
TOTAL
T. thermophila
0
0
0
0
8
0
20
1
29
T. elliotti
4
3
0
14
6
6
13
1
47
T. tropicalis
4
0
0
20
5
5
7
0
41
T. borealis
0
7
8
10
7
8
14
0
54
T. amer. amer.
10
19
6
8
19
16
7
11
96
TOTAL
18
29
14
52
45
35
61
13
267