Table 10.
Morphometric data on Oxytricha arabica (OA) and Erimophrya monostyla (EM). Data based on mounted, protargol-impregnated (Foissner 1991, protocol A), and randomly selected specimens from non-flooded Petri dish cultures. Measurements in μm. CV – coefficient of variation in %, M – median, Max – maximum, Min – minimum, n – number of individuals investigated, SD – standard deviation, SE – standard error of arithmetic mean, x̄ – arithmetic mean
| Characteristics | Species | x̄ | M | SD | SE | CV | Min | Max | n |
|---|---|---|---|---|---|---|---|---|---|
| Body, length | OA | 98.1 | 97.0 | 9.2 | 2.0 | 9.4 | 82.0 | 116.0 | 21 |
| EM | 60.8 | 60.0 | 8.6 | 2.5 | 14.1 | 50.0 | 74.0 | 12 | |
| Body, width | OA | 35.4 | 35.0 | 4.7 | 1.0 | 13.3 | 30.0 | 45.0 | 21 |
| EM | 10.0 | 10.0 | 0.7 | 0.2 | 7.4 | 9.0 | 11.0 | 12 | |
| Body length: width, ratio | OA | 2.8 | 2.8 | 0.3 | 0.1 | 9.9 | 2.2 | 3.2 | 21 |
| EM | 6.1 | 6.0 | 1.1 | 0.3 | 17.6 | 5.0 | 8.2 | 12 | |
| Adoral zone of membranelles, lengtha | EM | 13.1 | 13.0 | 0.8 | 0.2 | 6.1 | 12.0 | 14.0 | 12 |
| OA | 33.6 | 34.0 | 2.4 | 0.5 | 7.2 | 29.0 | 38.0 | 21 | |
| Anterior body end to paroral membrane, distance | OA | 10.7 | 11.0 | 1.3 | 0.3 | 12.2 | 8.0 | 13.0 | 21 |
| Anterior body end to endoral membrane, distance | OA | 15.5 | 15.0 | 1.6 | 0.3 | 10.1 | 14.0 | 19.0 | 21 |
| Anterior body end to last frontoventral cirrus, distance | OA | 25.5 | 26.0 | 2.5 | 0.5 | 9.7 | 21.0 | 30.0 | 21 |
| Anterior body end to first postoral cirrus, distance | OA | 34.3 | 34.0 | 3.0 | 0.7 | 8.8 | 29.0 | 40.0 | 21 |
| Anterior body end to third postoral cirrus, distance | OA | 42.1 | 42.0 | 3.6 | 0.8 | 8.5 | 36.0 | 48.0 | 21 |
| Anterior body end to right marginal row, distance | OA | 16.6 | 17.0 | 2.9 | 0.6 | 17.6 | 10.0 | 20.0 | 21 |
| Anterior end to first macronucleus nodule, distance | OA | 32.6 | 33.0 | 3.8 | 0.8 | 11.7 | 21.0 | 38.0 | 21 |
| Posterior end to uppermost transverse cirrus, distance | OA | 10.5 | 11.0 | 1.3 | 0.3 | 11.9 | 8.0 | 12.0 | 21 |
| Macronucleus nodules, distance in between | OA | 3.2 | 3.0 | 1.7 | 0.4 | 53.7 | 1.0 | 7.0 | 21 |
| EM | 2.3 | 2.0 | 1.7 | 0.5 | 73.7 | 0.0 | 5.0 | 12 | |
| Anterior macronucleus nodule, length | OA | 14.0 | 14.0 | 2.1 | 0.5 | 14.8 | 11.0 | 19.0 | 21 |
| EM | 11.0 | 10.0 | 1.9 | 0.6 | 17.4 | 9.0 | 15.0 | 12 | |
| Anterior macronucleus nodule, width | OA | 11.1 | 11.0 | 1.3 | 0.3 | 11.5 | 9.0 | 13.0 | 21 |
| EM | 4.0 | 4.0 | 0.7 | 0.2 | 18.5 | 3.0 | 5.0 | 12 | |
| Posterior macronucleus nodule, length | OA | 15.0 | 16.0 | 1.8 | 0.4 | 11.4 | 13.0 | 20.0 | 21 |
| Posterior macronucleus nodule, width | OA | 10.8 | 10.0 | 1.3 | 0.3 | 11.7 | 9.0 | 14.0 | 21 |
| Micronuclei, maximum length |
OA | 3.3 | 3.0 | - | - | - | 3.0 | 4.0 | 21 |
| EM | 2.2 | 2.1 | 0.4 | 0.1 | 18.8 | 1.6 | 3.0 | 12 | |
| Micronuclei, width | EM | 1.5 | 1.5 | - | - | - | 1.2 | 2.0 | 12 |
| Largest membranellar base, length | OA | 7.5 | 8.0 | - | - | - | 7.0 | 8.0 | 21 |
| Adoral membranelles, number |
OA | 29.8 | 30.0 | 1.3 | 0.3 | 4.2 | 27.0 | 32.0 | 21 |
| EM | 14.9 | 15.0 | 0.5 | 0.2 | 3.5 | 14.0 | 16.0 | 12 | |
| Macronucleus nodules, number |
OA | 2.0 | 2.0 | 0.0 | 0.0 | 0.0 | 2.0 | 2.0 | 21 |
| EM | 2.0 | 2.0 | 0.0 | 0.0 | 0.0 | 2.0 | 2.0 | 12 | |
| Micronuclei, number | OA | 1.8 | 2.0 | 0.5 | 0.1 | 28.3 | 1.0 | 3.0 | 21 |
| EM | 1.8 | 2.0 | - | - | - | 1.0 | 2.0 | 12 | |
| Right marginal cirri, number | OA | 20.6 | 20.0 | 1.9 | 0.4 | 9.4 | 17.0 | 25.0 | 21 |
| EM | 18.0 | 18.0 | 1.4 | 0.4 | 7.5 | 16.0 | 21.0 | 12 | |
| Left marginal cirri, number | OA | 22.9 | 23.0 | 1.5 | 0.3 | 6.7 | 21.0 | 27.0 | 21 |
| EM | 17.3 | 18.0 | 1.8 | 0.5 | 10.5 | 14.0 | 20.0 | 12 | |
| Frontal cirri, number | OA | 3.0 | 3.0 | 0.0 | 0.0 | 0.0 | 3.0 | 3.0 | 21 |
| EM | 3.0 | 3.0 | 0.0 | 0.0 | 0.0 | 3.0 | 3.0 | 12 | |
| Frontoventral cirri, number | OA | 4.0 | 4.0 | 0.0 | 0.0 | 0.0 | 4.0 | 4.0 | 21 |
| EM | 4.0 | 4.0 | 0.4 | 0.1 | 10.7 | 3.0 | 5.0 | 12 | |
| Buccal cirri, number | OA | 1.0 | 1.0 | 0.0 | 0.0 | 0.0 | 1.0 | 1.0 | 21 |
| EM | 1.0 | 1.0 | 0.0 | 0.0 | 0.0 | 1.0 | 1.0 | 12 | |
| Postoral ventral cirri, number | OA | 3.0 | 3.0 | 0.0 | 0.0 | 0.0 | 3.0 | 3.0 | 21 |
| EM | 1.0 | 1.0 | 0.0 | 0.0 | 0.0 | 1.0 | 1.0 | 12 | |
| Pretransverse cirri, number | OA | 2.0 | 2.0 | 0.0 | 0.0 | 0.0 | 2.0 | 2.0 | 21 |
| EM | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 12 | |
| Transverse cirri, number | OA | 5.0 | 5.0 | 0.0 | 0.0 | 0.0 | 5.0 | 5.0 | 21 |
| EM | 2.0 | 2.0 | 0.0 | 0.0 | 0.0 | 2.0 | 2.0 | 12 | |
| Caudal cirri, number | OA | 3.0 | 3.0 | 0.0 | 0.0 | 0.0 | 3.0 | 3.0 | 21 |
| EM | 2.0 | 2.0 | 0.0 | 0.0 | 0.0 | 2.0 | 2.0 | 12 | |
| Dorsal ciliary rows, number | OA | 5.0 | 5.0 | 0.0 | 0.0 | 0.0 | 5.0 | 5.0 | 21 |
| EM | 4.0 | 4.0 | 0.0 | 0.0 | 0.0 | 4.0 | 4.0 | 12 | |
| Kinetids in dorsal kinety 1, number | OA | 19.9 | 20.0 | 1.8 | 0.4 | 9.1 | 16.0 | 24.0 | 21 |
| EM | 5.0 | 5.0 | 0.0 | 0.0 | 0.0 | 5.0 | 5.0 | 6 | |
| Kinetids in dorsal kinety 4, number | OA | 7.4 | 7.0 | 1.3 | 0.3 | 16.8 | 5.0 | 10.0 | 21 |
| EM | 4.0 | 4.0 | 0.0 | 0.0. | 0.0 | 4.0 | 4.0 | 10 | |
| Kinetids in dorsal kinety 5, number | OA | 11.6 | 12.0 | 1.5 | 0.3 | 12.7 | 9.0 | 14.0 | 21 |
a
Measured as distance from anterior body end to proximal end of zone.