Dysteria crassipes Claparède and Lachmann, 1859

Park, Mi-Hyun & Min, Gi-Sik, 2016, Morphological reports of four ciliates (Ciliophora) from coastal marine and brackish water habitats in Korea, Journal of Species Research 5 (3), pp. 514-516 : 515

2. Dysteria crassipes Claparède and Lachmann, 1859

( Fig. 1C, D )

Diagnosis. Cell size ca. 55 × 25 μm in impregnated specimens; nearly rectangular to pentagonal in shape; four right kineties, two outermost kineties extending to dorso­apical region; one macronucleus, 18­25 μm in length; two ventral contractile vacuoles.

Material examined. On July 31, 2008, at Incheon Harbor , the Yellow Sea, Korea (37°26′N, 126°35′E) .

Voucher slides. A slide of protargol­impregnated specimens was deposited at the National Institute of Biological Resources, Korea (NIBRPR0000107180).

Remarks. Dysteria crassipes can be clearly distinguish­ ed from its congeners by the difference of the number of right kineties ( Gong et al., 2007). The morphology and infraciliature of this population correspond well with those of the Chinese isolate reported by Gong et al. (2007).

Figures

Fig. 1. Photomicrographs of four ciliates on the basis of live observation (A, C, E, H) and after protargol impregnation (B, D, F, G, I). A, B, Gruberia calkinsi, left side view of a living specimen (A) and right side view of a protargol­impregnated specimen (B); C, D, Dysteria crassipes, left side views of living (C) and protargol­impregnated (D) specimens; E­G, Zosterodasys agamaliev, ventral view of a living specimen(E), and ventral (F) and dorsal (G) views of potargol­impregnated specimens; H, I, Pleuronema salmastra, ventral views of living (H) and protargol­impregnated (I) specimens. Scale bars:A=500 μm, B=300 μm, C, D=30μm, E, H=50μm.