Table 2.
Biometric comparison of Trichodina chlorophora populations
| Character/reference | Present study | Richards (1948) | Blecka and Garoian (1972) |
|---|---|---|---|
| Body, diameter | 50.2 (45.7‒54.7) | 55.5 (41‒70) | 65.7 (48‒83) |
| Adhesive disc, diameter | 45.2 (41.3‒48.6) | 46.4 (37‒59) | 44.7 (36‒65) |
| Border membrane, width | 2.5 (1.9‒3.1) | 4.1 | 2.2 (1.5‒3.0) |
| Denticle ring, diameter | 28.2 (26.2‒30.8) | 30.1 (23‒38) | 27.8 (24‒39) |
| Denticle, number | 27.5 (26.0‒30.0) | 27 (23‒30) | 27 (24‒29) |
| Denticle, length | 6.5 (5.7‒7.8) | ‒ | 7.25 |
| Ray, length | 4.8 (3.1‒6.2) | 4.4 (2.0‒5.5) | 5.0 (4.0‒7.0) |
| Central part, width | 1.6 (1.0‒2.7) | 1.9 (1.6‒2.5) | 1.6 (1.0‒2.0) |
| Blade, length | 5.2 (4.6‒5.8) | ‒ | 5.0 (4.0‒7.0) |
| Radial pins per denticle, number | 10.1 (9.0‒11.0) | 9 | 9‒10 |
| Zoochlorellae | Present | Present | Present |
| Geographic location | Vojčianske jazero (lake), Slovakia | Ponds near Stanford University, southern California, U.S.A | Ponds and streams in Jackson County, Illinois, U.S.A |
| Host | Physella acuta | Physella ampullaceaa | Physella gyrina |
All measurements are in μm
aNow considered a junior synonym of Physella gyrina (Say, 1821) (MolluscaBase eds. 2025)