Pseudochilodonopsis mutabilis Foissner, 1981

Min, Kang-San Kim and Gi-Sik, 2018, New records of nine ciliates (Protozoa: Ciliophora) from Korea: Brief descriptions and remarks, Journal of Species Research 7 (4), pp. 315-322 : 321-322

9. Pseudochilodonopsis mutabilis Foissner, 1981

( Fig. 9 )

Material examined. Soil sample taken from Bangeodong, Ulsan, South Korea (35°28 ʹ 56 ʺ N, 129°25 ʹ 54 ʺ E) on November 2015 .

Diagnosis. Cell size 30-40 × 20-35 μm in protargol preparations; oval body shaped, posterior end rounded; 2 contractile vacuoles; 1 macronucleus size 10 × 5 on average; 12 or 13 nematodesmal rods; 2 circumoral kineties; 5 right and 6 left somatic kineties; 4 fragments in preoral kinety.

Remarks. The Korean population of Pseudochilodonopsis mutabilis shows high consistency with the type ( Austria) and the Chinese populations based on morphological information (contractile vacuoles and somatic kineties pattern). However, the left somatic kineties of the Korean population are shorter than the Chinese population (innermost one behind the midbody level vs. innermost one at the posterior 1/4 of cell length), and these two population have different habitats (soil vs. brackish water) ( Foissner, 1981; Qu et al., 2015).

Deposition. One voucher slide with protargol-impregnated specimens is deposited in the National Institute of Biological Resources in Korea (NIBRPR0000109454).

Figures

Fig. 9. Photomicrographs of Pseudochilodonopsis mutabilis from life (A) and after protargol impregnation (B, C). (A) Arrows indicate contractile vacuoles. (B) Ventral view. (C) Anterior portion of ventral side. Scale bars=20μm.