Character | Sonderia pharyngeaKirby, 1934 | Sonderia labiataFauré-Fremiet & Tuffrau, 1955 | Sonderia sinuataKahl, 1931 | Sonderia sinuataBorror, 1972 | Sonderia sinuataDragesco & Dragesco-Kernéis, 1986 | Sonderia sinuataSola et al.,1989 | Sonderia sinuataAl-Rasheid, 2001 | Sonderia voraxKahl, 1928 | Sonderia voraxKhal, 1931 | Sonderia voraxpresent study |
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cell length, μm | 84--110 (IV?) | 160--180 (IV?) | 240--250 (IV?) | 145--164 | 180--240 (IV?) | 132--176 (OF) | 90--120 (IV?) | 60--150 (IV) | 70--180 (IV) | ~ 100--150 (IV) |
cell width, μm | 48--65 (IV?) | ~60--75c (IV?) | nd | 81--113 | nd | 78.1--105.6 (OF) | 82--95 (IV?) | ~ 30--75b (IV?) | ~ 30--75c (IV?) | ~ 50--75 (IV) |
differentiation of ventral kinetom | – | –† | +† | nd | –† | + | –† | +† | +† | + |
n of ventro-frontal kineties | nd | nd | nd | nd | nd | ~ 30 | nd | nd | nd | 12--18 |
n of ventro-lateral kineties | nd | nd | nd | nd | nd | ~ 8† | nd | nd | nd | 8--13 |
n of ventral kineties (total) | nd | 35--40 | nd | nd | 24 | ~ 38† | nd | nd | nd | 20--31 |
n of dorsal kineties | nd | 35--40 | nd | nd | 20--30 | 45 | nd | nd | nd | 25--31 |
composition of somatic kineties | nd | dk or tk | nd | nd | dk | mk; dk within the vestibular cavity | nd | nd | nd | mk |
n and composition of oral kineties | nd | 23† prebuccal + 17† postbuccal; nd | nd | nd | nd | 30† prebuccal + 20† postbuccal; dk | nd | nd | nd | 25-30 prebuccal + 18–20 postbuccal; mk and dk |
peristome size : cell size ratio | > 1/2 (IV) | ~ 1/2† | ~ 1/2 | ~ 1/2 | ~ 1/2 | ~ 1/2 | ~ 1/2 | ~ 1/2 † | < 1/2† | ~ 1/3 |
dsb size: cell size ratio | nd | ~ 1/2† | 1 | 1 | nd | 1 | nd | nd | nd | + ~1 |
ma, length, μm | 15--20 (IV) | ~ 35† (SI?) | nd | nd | ~ 25† (PS) | 20.9--33.0 (OF) | 25 | ~ 20† | nd | 27 (average)(SI) |
ma, width, μm | 15--20 (IV) | ~ 35† (SI?) | nd | nd | ~ 25† (PS) | 22.0--30.8 (OF) | 25 | ~ 20† | nd | 32.5 (average) (SI) |
mi, number | 1 | nd | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
mi, diameter, μm | nd | nd | nd | nd | nd | nd | 4--7 | nd | nd | ~ 5.4 (average) |
exI, size, μm | 7--9 (IV) | ~20 (SI?) | nd | nd | 22--26 | nd | 6--10 | nd | ~ 20 | ~ 20 (IV) |
exI, amount and distribution | few; sparse and unevenly distributed throughout the cell | many, inserted in the cortex | nd | nd | nd | nd | many, unevenly distributed throughout the cell† | many; inserted closely to surface † | many; inserted closely to surface † | many; inserted in the cortex and sometimes free in the cytoplasm |
swimming rotation | nd | nd | nd | nd | nd | nd | nd | nd | nd | anticlockwise |
habitat (salinity) | hypersaline water (35--100 ‰) | brackish water (1--6 ‰) | brackish water (3--20 ‰) | seawater | brackish water | fresh water | sea water (35--38 ‰) | brackish water (5--20 ‰) | brackish water (5--20 ‰) | brackish water (4--8 ‰) |