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. 2023 May 17;14:1159634. doi: 10.3389/fmicb.2023.1159634

Table 1.

Morphometric data on Tetmemena polymorpha n. sp. small morph (first line), large morph (second line), and giant morph (third line).

Characteristica H Mean M SD SE CV Min Max n
Body, length (Ch1) 83.0 82.8 82.0 5.9 1.3 7.1 74.0 96.0 21
104.0 110.7 111.0 5.9 1.3 5.3 100.0 123.0 21
119.0 139.9 141.0 11.3 2.5 8.1 119.0 162.0 21
Body, width (Ch2) 34.0 36.9 35.0 5.3 1.2 14.4 30.5 52.0 21
61.0 68.7 68.9 4.8 1.1 7.0 61.0 79.0 21
69.0 84.3 83.0 11.4 2.5 13.5 63.0 103.0 21
Body length:width, ratio (Ch3) 2.4 2.3 2.3 0.2 0.1 9.0 1.7 2.6 21
1.7 1.6 1.6 0.1 0.1 7.6 1.4 1.9 21
1.7 1.7 1.7 0.2 0.1 9.5 1.4 1.9 21
Body, length in vivo 111.4 115.0 12.1 2.6 10.9 87.0 126 21
151.1 151.0 10.2 2.0 6.8 136.0 170.0 27
219.5 221.5 8.5 2.1 3.9 200.0 232.0 16
Body, width in vivo 42.5 42.0 6.0 1.3 14.0 33.0 53.0 21
70.5 71.0 6.7 1.3 9.5 59.0 81.0 27
109.6 111.0 9.0 2.2 8.2 90.0 132.0 16
Body length:width, ratio in vivo 2.6 2.6 0.3 0.1 12.3 1.7 3.1 21
2.1 2.1 0.1 0.1 4.1 2.0 2.3 27
2.0 2.0 0.1 0.1 6.4 1.7 2.3 16
Anterior body end to distal end of AZM, distance 4.0 4.7 4.7 0.6 0.1 13.6 3.9 5.9 21
4.3 6.2 6.0 0.9 0.2 14.5 4.3 8.0 21
7.9 7.1 7.0 1.4 0.3 19.9 5.0 10.0 21
Anterior body end to distal end of AZM, % of body length 4.8 5.7 5.5 0.7 0.2 12.4 4.8 7.2 21
4.1 5.6 5.6 0.9 0.2 15.6 4.1 7.3 21
6.6 5.1 4.8 1.3 0.3 25.9 3.4 8.0 21
Anterior body end to proximal end of AZM, distance (Ch4) 39.0 38.7 38.0 3.7 0.8 9.7 34.0 47.0 21
58.0 57.3 58.0 3.0 0.6 5.2 51.0 63.0 21
72.0 83.4 82.0 6.7 1.5 8.1 72.0 99.0 21
Body length:AZM, ratio 2.1 2.1 2.1 0.1 0.1 5.0 1.9 2.3 21
1.8 1.9 1.9 0.1 0.1 5.1 1.8 2.2 21
1.7 1.7 1.7 0.1 0.1 7.0 1.5 1.9 21
Adoral zone of membranelles, % of body length 47.0 46.6 46.9 2.4 0.5 5.0 42.7 51.4 21
55.8 51.8 52.5 2.6 0.6 4.9 45.5 55.8 21
60.5 59.1 58.3 4.2 0.9 7.1 51.4 67.8 21
DE-value (Ch5) 0.10 0.12 0.12 0.00 0.01 9.39 0.10 0.14 21
0.07 0.11 0.11 0.02 0.01 14.88 0.07 0.14 21
0.11 0.09 0.08 0.02 0.01 24.19 0.05 0.13 21
Adoral membranelles, number (Ch6) 34.0 33.4 33.0 3.0 0.6 8.9 28.0 41.0 21
48.0 47.3 48.0 1.7 0.4 3.6 43.0 50.0 21
63.0 67.9 67.0 5.1 1.1 7.5 62.0 83.0 21
Adoral membranelles, width of longest base (Ch8) 5.9 5.9 5.9 0.5 0.1 9.1 4.8 7.6 21
8.6 8.4 8.3 0.6 0.1 7.2 7.4 10.0 21
13.0 14.2 14.0 1.7 0.4 11.7 12.0 18.0 21
Gap between AZM and PM (maximum width of buccal cavity) (Ch7)b 7.6 7.1 6.7 1.2 0.3 16.9 5.6 10.0 21
14.6 12.7 12.0 1.8 0.4 13.9 10.4 15.6 21
19.0 23.3 23.0 4.8 1.0 20.5 13.0 31.0 21
Anterior body end to RMR, distance (Ch9) 5.3 5.7 5.7 0.7 0.2 12.9 4.0 7.4 21
7.0 7.4 7.5 1.5 0.3 20.7 5.0 10.0 21
9.0 9.5 10.0 2.0 0.4 21.0 6.7 14.0 21
Anterior body end to RMR, % of body length 6.4 6.9 7.0 0.9 0.2 12.4 5.1 8.3 21
6.7 6.7 6.7 1.4 0.3 21.5 4.5 9.6 21
7.6 6.9 6.8 1.7 0.4 24.9 4.5 11.2 21
Posterior body end to posterior end of RMR, distance 2.8 2.7 2.5 1.0 0.2 39.1 1.0 5.4 21
2.7 2.3 2.5 1.5 0.3 66.8 0.0 6.3 21
2.2 2.2 2.0 1.7 0.4 75.9 0.0 5.8 21
Right marginal row, number of cirri (Ch10) 27.0 29.5 29.0 2.2 0.5 7.3 26.0 33.0 21
33.0 33.3 33.0 1.7 0.4 5.0 30.0 37.0 21
42.0 38.2 38.0 3.1 0.7 8.1 31.0 44.0 21
Anterior body end to LMR, distance (Ch11) 32.0 32.1 32.0 2.5 0.6 7.9 28.0 38.0 21
40.0 40.6 41.4 3.0 0.7 7.4 35.0 45.0 21
52.0 57.0 55.0 7.9 1.7 13.8 40.0 70.0 21
Anterior body end to LMR, % of body length 38.6 38.7 38.6 1.5 0.3 3.8 35.0 40.9 21
38.5 36.7 36.9 2.4 0.5 6.5 31.8 39.7 21
43.7 40.7 40.3 4.8 1.0 11.7 32.0 50.8 21
Posterior body end to posterior end of LMR, distance 0.5 0.7 0.7 0.5 0.1 0.0 1.8 21
0.5 0.4 0.0 0.5 0.1 0.0 1.2 21
0.0 0.0 0.0 0.2 0.1 0.0 1.0 21
Left marginal row, number of cirri (Ch12) 22.0 21.7 22.0 1.4 0.3 6.4 19.0 24.0 21
24.0 23.7 24.0 1.8 0.4 7.5 20.0 26.0 21
30.0 28.2 28.0 3.0 0.7 10.8 22.0 33.0 21
Anterior body end to BC, distance (Ch13) 14.0 13.6 13.5 0.9 0.2 6.6 12.0 16.0 21
16.0 16.8 16.0 1.8 0.4 10.6 14.9 21.0 21
17.0 17.3 17.0 2.3 0.5 13.6 13.0 22.0 21
Anterior body end to BC, % of body length 16.9 16.5 16.7 0.9 0.2 5.4 15.1 18 21
15.4 15.1 15.3 1.1 0.3 7.6 13.4 17.1 21
14.3 12.4 12.6 1.7 0.4 13.5 9.8 14.8 21
Anterior body end to PM, distance (Ch14) 13.7 13.5 13.6 1.0 0.2 7.3 11.6 16.0 21
16.0 16.3 17.0 1.4 0.3 8.8 13.0 18.0 21
13.0 12.1 12.5 2.6 0.6 21.0 7.0 19.0 21
Anterior body end to PM, % of body length 16.5 16.4 16.6 0.9 0.2 5.6 13.6 18.2 21
15.4 14.7 14.7 1.3 0.3 9.1 11.6 16.7 21
10.9 8.8 8.4 2.0 0.4 23.0 5.0 13.0 21
Paroral membrane, length (Ch15) 18.7 17.9 18.0 2.7 0.6 14.9 13.0 24.0 21
28.0 29.6 29.0 2.5 0.5 8.4 25.0 34.9 21
47.0 56.8 57.0 5.2 1.1 9.1 45.0 64.0 21
Anterior body end to EM, distance (Ch16) 17.5 17.0 17.0 1.1 0.2 6.4 15.7 20.0 21
19.6 20.4 20.8 1.3 0.3 6.4 18.0 23.0 21
17.0 17.6 17.7 2.3 0.5 13.2 12.0 23.0 21
Anterior body end to EM, % of body length 21.1 20.6 20.6 0.9 0.2 4.3 18.7 22.0 21
18.8 18.4 18.4 1.1 0.2 5.9 16.1 20.4 21
14.3 12.6 12.8 1.8 0.4 14.2 8.5 16.0 21
Endoral membrane, length (Ch17) 20.0 19.3 19.0 2.8 0.6 14.5 14.0 26.0 21
33.0 33.2 33.0 2.1 0.5 6.3 29.0 36.0 21
50.0 60.6 61.0 5.8 1.3 9.5 50.0 72.0 21
Anterior body end to anterior macronuclear nodule, distance (Ch18) 19.0 18.6 18.0 1.9 0.4 10.4 16.0 23.0 21
21.6 26.1 24.9 3.3 0.7 12.8 21.6 35.0 21
29.0 35.3 36.0 3.8 0.8 10.8 28.0 42.0 21
Posterior body end to posterior macronuclear nodule, distance 20.0 20.6 20.0 1.9 0.4 9.4 16.0 24.5 21
25.5 27.5 27.0 3.1 0.7 11.1 23.0 35.0 21
19.0 29.3 29.0 5.4 1.2 18.3 19.0 40.0 21
Anterior macronuclear nodule, length (Ch19) 16.6 16.3 16.6 1.9 0.4 11.4 13.0 20.0 21
30.0 26.4 26.0 2.5 0.6 9.6 23.0 31.0 21
28.0 31.9 33.0 4.3 0.9 13.4 21.0 41.0 21
Anterior macronuclear nodule, width (Ch20) 6.5 7.1 7.0 0.7 0.2 9.8 5.8 8.0 21
12.0 12.4 12.4 1.2 0.3 9.4 10.3 14.0 21
13.0 13.5 13.0 1.4 0.3 10.6 12.0 17.0 21
Macronuclear nodules, number (Ch21) 2.0 2.0 2.0 0.0 0.0 0.0 2.0 2.0 21
2.0 2.0 2.0 0.0 0.0 0.0 2.0 2.0 21
2.0 2.0 2.0 0.0 0.0 0.0 2.0 2.0 21
Micronuclei, diameter 2.4 2.6 2.6 0.3 0.1 12.4 2.0 3.3 21
2.8 3.0 3.0 0.3 0.1 10.4 2.4 4.0 21
3.3 3.0 3.0 0.1 0.1 2.2 3.0 3.3 21
Micronuclei, number (Ch22) 1.0 1.4 1.0 0.6 0.1 41.8 1.0 3.0 21
2.0 2.0 2.0 0.6 0.1 31.6 1.0 3.0 21
3.0 4.5 4.0 1.6 0.3 35.8 1.0 8.0 21
Nuclear figure, length (Ch23) 44.0 44.4 44.0 4.0 0.9 9.0 38.0 54.0 21
58.0 58.7 58 4.7 1.0 7.9 51.3 68.0 21
70.0 75.4 75.0 7.2 1.6 9.6 60.0 87.0 21
Macronuclear nodules, distance in between 11.0 10.9 11.3 2.0 0.4 18.2 6.3 13.5 21
9.4 10.0 9.4 3.9 0.9 39.3 3.0 16.0 21
17.0 9.9 10.0 8.7 1.9 88.1 0.0 28.0 21
Frontal cirri, number (Ch24) 3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
Buccal cirri, number (Ch25) 1.0 1.0 1.0 0.0 0.0 0.0 1.0 1.0 21
1.0 1.1 1.0 0.4 0.1 31.4 1.0 2.0 21
3.0 2.8 3.0 0.4 0.1 15.8 2.0 3.0 21
Anterior body end to anterior frontoventral cirrus, distance 14.0 13.3 13.5 1.3 0.3 9.6 11.0 16.0 21
17.5 17.5 17.6 1.9 0.4 10.6 14.0 21.0 21
23.0 22.8 23.0 3.8 0.8 16.8 15.0 29.0 21
Anterior body end to end of frontoventral cirri, distance 23.0 22.1 22.0 1.3 0.3 5.9 20.3 25.0 21
30.0 30.7 30.4 2.4 0.5 7.8 25.0 37.0 21
43.0 46.5 46.0 7.4 1.6 16.0 34.0 61.0 21
Frontoventral cirri, number (Ch26) 4.0 4.0 4.0 0.0 0.0 0.0 4.0 4.0 21
4.0 4.0 4.0 0.0 0.0 0.0 4.0 4.0 21
5.0 4.8 5.0 0.5 0.1 11.3 4.0 6.0 21
Anterior body end to anterior postoral cirrus, distance 44.0 41.9 41.0 3.6 0.8 8.6 36.0 50.0 21
58.0 59.1 58.8 3.2 0.7 5.4 54.0 65.0 21
71.0 82.7 82.0 7.5 1.6 9.0 71.0 99.0 21
Anterior body end to posterior postoral cirrus, distance 55.0 52.2 51.0 4.0 0.9 7.7 45.7 62.0 21
71.0 73.4 72.0 4.0 0.9 5.4 66.0 81.0 21
80.0 97.0 96.0 8.5 1.9 8.8 80.0 112.0 21
Postoral cirri, number (Ch27) 3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
3.0 3.0 3.0 0.2 0.1 7.2 3.0 4.0 21
Pretransverse cirri, number (Ch28) 2.0 2.0 2.0 0.0 0.0 0.0 2.0 2.0 21
2.0 2.0 2.0 0.0 0.0 0.0 2.0 2.0 21
2.0 2.0 2.0 0.0 0.0 0.0 2.0 2.0 21
Posterior body end to anterior pretransverse cirrus, distance 18.7 17.9 18.0 2.2 0.5 12.4 14.0 22.6 21
22.8 24.9 25.0 1.8 0.4 7.1 22.0 28.0 21
29.0 29.4 29.0 3.8 0.8 12.8 23.0 36.0 21
Posterior body end to posterior pretransverse cirrus, distance 11.3 10.6 10.5 1.5 0.3 13.8 7.7 13.5 21
13.7 15.4 15.0 1.7 0.4 11.2 12.3 19.0 21
18.0 18.4 19.0 3.0 0.7 16.5 12.0 23.0 21
Transverse cirri, number (Ch29) 5.0 5.0 5.0 0.0 0.0 0.0 5.0 5.0 21
5.0 5.0 5.0 0.0 0.0 0.0 5.0 5.0 21
5.0 5.0 5.0 0.2 0.1 4.3 5.0 6.0 21
Posterior body end to posterior transverse cirrus, distance 4.3 3.8 3.5 0.8 0.2 21.8 2.6 6.2 21
5.2 5.8 6.0 1.2 0.3 20.1 4.0 9.0 21
7.5 7.1 7.5 2.0 0.4 28.6 2.0 10.0 21
Frontal-ventral-transverse cirri, total number (Ch30) 18.0 18.0 18.0 0.0 0.0 0.0 18.0 18.0 21
18.0 18.1 18.0 0.4 0.1 2.0 18.0 19.0 21
21.0 20.6 21.0 0.8 0.2 3.9 19.0 22.0 21
Dorsal kineties, number (Ch31) 6.0 6.0 6.0 0.0 0.0 0.0 6.0 6.0 21
6.0 6.0 6.0 0.0 0.0 0.0 6.0 6.0 21
6.0 6.2 6.0 0.4 0.1 6.5 6.0 7.0 21
Anterior body end to anterior end of DK1, distance (Ch32) 18.5 18.2 18.0 1.7 0.4 9.5 15.0 21.0 21
16.0 18.8 19.0 2.4 0.5 12.6 12.7 22.4 21
17.0 21.6 21.0 3.2 0.7 14.9 17.0 28.0 21
Dorsal kinety 1, number of bristles (Ch33) 21.0 21.5 21.0 1.9 0.4 8.6 18.0 27.0 21
36.0 35.2 35.0 2.4 0.5 6.9 31.0 42.0 21
42.0 45.9 46.0 3.8 0.8 8.3 38.0 52.0 21
Anterior body end to anterior end of DK2, distance (34) 14.3 14.4 14.0 1.1 0.2 7.5 12.6 17.0 21
13.8 15.6 16.0 2.3 0.5 14.8 11.0 19.3 21
16.0 16.8 16.0 2.6 0.6 15.7 13.0 21.0 21
Dorsal kinety 2, number of bristles (Ch35) 20.0 19.6 20.0 1.6 0.4 8.3 16.0 24.0 21
30.0 29.1 29.0 1.8 0.4 6.1 26.0 34.0 21
38.0 37.1 38.0 3.5 0.8 9.4 29.0 42.0 21
Anterior body end to anterior end of DK3, distance (Ch36) 10.9 11.1 11.0 1.1 0.2 9.9 9.0 13.2 21
11.4 13.2 13.0 1.2 0.3 8.9 11.0 15.0 21
14.0 14.6 14.0 2.8 0.6 19.1 11.0 21.0 21
Dorsal kinety 3, number of bristles (Ch37) 17.0 16.8 17.0 1.3 0.3 7.7 15.0 20.0 21
23.0 24.0 24.0 1.7 0.4 6.9 21.0 27.0 21
32.0 32.3 33.0 3.2 0.7 10.0 27.0 39.0 21
Anterior body end to anterior end of DK4, distance (Ch38) 18.0 17.1 17.0 1.9 0.4 10.9 14.0 20.0 21
17.9 20.0 19.7 2.9 0.6 14.6 15.0 27.0 21
23.0 21.9 22.0 4.3 0.9 19.5 14.0 31.0 21
Dorsal kinety 4, number of bristles (Ch39) 15.0 15.0 15.0 1.3 0.3 8.8 12.0 17.0 21
23.0 25.3 26.0 2.4 0.5 9.5 21.0 27.0 21
29.0 30.1 30.0 3.4 0.7 11.1 24.0 35.0 21
Anterior body end to anterior end of DM1, distance (Ch40) 7.6 7.8 8.0 0.8 0.2 10.1 6.5 9.6 21
11.0 11.4 11.0 1.6 0.3 13.6 9.0 15.0 21
11.0 12.7 12.0 2.5 0.5 19.4 10.0 18.0 21
Dorsomarginal row 1, number of bristles (Ch41) 9.0 8.9 9.0 1.4 0.3 16.2 6.0 11.0 21
12.0 13.6 13.0 1.6 0.4 12.0 10.0 17.0 21
19.0 17.3 18.0 2.7 0.6 15.7 11.0 21.0 21
Anterior body end to anterior end of DM2, distance (Ch42) 7.6 7.7 7.6 0.8 0.2 11.0 6.0 9.9 21
10.0 10.2 9.9 1.5 0.3 14.5 8.0 14.0 21
14.0 11.7 11.0 1.6 0.3 13.5 10.0 15.0 21
Dorsomarginal row 2, number of bristles (Ch43) 4.0 3.4 3.0 0.7 0.1 19.7 2.0 5.0 21
7.0 6.7 7.0 1.1 0.2 16.4 5.0 9.0 21
6.0 8.0 8.0 1.8 0.4 22.0 5.0 12.0 21
Dorsal bristles, total number (Ch44) 86.0 85.2 85.0 5.7 1.2 6.7 75.0 103.0 21
131.0 134.0 135.0 6.8 1.5 5.1 121.0 149.0 21
167.0 170.8 171.0 11.3 2.5 6.6 146.0 187.0 21
Caudal cirri, number (Ch45) 3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
3.0 3.0 3.0 0.0 0.0 0.0 3.0 3.0 21
Caudal cirrus 1 to caudal cirrus 2, distance 1.8 2.2 2.1 0.4 0.1 17.0 1.8 3.0 21
2.5 3.1 3.0 0.5 0.1 15.2 2.4 3.9 21
2.6 3.6 3.6 0.7 0.2 20.9 2.0 5.1 21
Caudal cirrus 2 to caudal cirrus 3, distance 4.1 4.2 4.1 0.5 0.1 11.0 3.4 5.1 21
4.3 4.8 4.7 0.6 0.1 11.7 3.7 5.9 21
3.5 5.3 5.2 1.0 0.2 18.1 3.5 7.2 21
Resting cysts, diameter invivoc - 71.3 73.0 5.6 1.5 7.9 60.0 79.0 15
Resting cysts, diameter in SEMc - 51.6 51.0 5.5 0.9 10.6 40.0 63.0 38
a

Data based, if not mentioned otherwise, on protargol-impregnated specimens. Measurements in μm. Numbers in parentheses (CH1–45) indicate characters used in the principal component analysis. AZM, adoral zone of membranelles; BC, buccal cirrus; CV, coefficient of variation in %; DK, dorsal kinety; DM, dorsomarginal kinety; EM, endoral membrane; H, hapantotypes; LMR, left marginal row; M, median; Max, maximum; Mean, arithmetic mean; Min, minimum; n, number of individuals investigated; PM, paroral membrane; RMR, right marginal row; SD, standard deviation; SE, standard error of arithmetic mean; SEM, scanning electron micrographs.

b

The transverse distance between the anterior end of the paroral membrane to the opposite adoral membranelle on the left side.

c

Including spines.