Trichodina pediculus Ehrenberg, 1838

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 pediculus Ehrenberg, 1838 ( fig. 2 , e)

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

D e s c r i p t i o n. Cell diameter 51.1–62.3 (57.6 ± 3.9; 9), diameter of adhesive disc 46.1–53.5 (49.1 ± 2.9; 9). Denticle number 22–26 (23.3 ± 1.9; 9). Border membrane 2.2–4.3 (3.6 ± 1.2; 9) in width. Diameter of denticle ring 25.5–32.6 (28.5 ± 2.4; 9). Central zone of the denticle ring is clear and evenly impregnated by silver. Blade curved, broad, with truncated apex, length of blade 6.1–8.1 (7.1 ± 0.6; 9). The blade is sickle-shaped, tapering towards the sharp tangent point; apex blade is extends beyond for y–axis. Rays thin and tapering downward, clearly directed anteriorly, length of ray 6.5–8.0 (7.2 ± 0.5; 9). There is no clear connecting part between the ray and the central part. Length of blades and rays is same; this distinguishes samples found in the Chinese slipper from other samples.

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.