Trichodina nigra Lom, 1960

Drobiniak, O., Kutsokon, Yu. & Kvach, Yu., 2014, Trichodinids (Ciliophora, Peritrichia) Of Perccottus Glenii (Actinopterygii, Odontobutidae) In Three Ukrainian Rivers, Vestnik Zoologii 48 (3), pp. 231-238 : 235

Trichodina nigra Lom, 1960 ( fig. 2 , d)

L o c a l i t y. Lake Berizka, Ivachiv Reservoir, the Danube delta (table 1).

D e s c r i p t i o n. Cell diameter 54.6–70.3 (60.6 ± 8.8). Diameter of adhesive disc 43.0– 60.0 (49.9 ± 6.4; 8). Denticle number 20–26 (23.1 ± 1.7; 8). Diameter of denticle ring 25.0– 34.7 (29.1 ± 3.7; 8). Central zone of the denticle ring is clear and evenly impregnated by silver. Blade curved, broad, with truncated apex, closely located to each other; length of blade 6.3–8.0 (7.3 ± 0.6; 8); anterior and posterior margin of blade almost parallel to y–axis. Rays broad in apical margin and tapering downward, clearly directed anteriorly, length of ray 6.0–8.5 (7.4 ± 0.9; 8). The central part is broad. Width of border membrane and diameter of body were not measured.

Figures

Fig. 2. Smears impregnated with silver nitrate (Klein 1958) from Chinese slipper from Ukrainian rivers: a — Trichodina acuta Lom, 1961; b — Trichodina intermedia Lom, 1961; c — Trichodina mutabilis Kazubski et Migala, 1968; d — Trichodina nigra Lom, 1960; e — Trichodina pediculus Ehrenberg, 1838; f — Trichodina perforata Lom, 1976. Scale bar 10 µm.