Bakuella marina Agamaliev and Alekperov, 1976

Kim, Ji Hye & Jung, Ji Hye Moon and Jae-Ho, 2018, New records of 24 ciliate species (Protozoa, Ciliophora) collected in South Korea, Journal of Species Research 7 (4), pp. 291-314 : 298-299

8. Bakuella marina Agamaliev and Alekperov, 1976

( Fig. 8 )

Material examined. Brackish water (salinity 2.3‰) with debris collected from Gyeongpocheon River , Unjeong-dong , Gangneung-si, Gangwon-do, Korea (37°47 ʹ 20 ʺ N, 128°54 ʹ 34 ʺ E) on February 14, 2018 .

Diagnosis. Body size 145-180 × 40-50 μm in vivo; body shape elongated ellipsoidal; dorsoventrally flattened; both body ends rounded; flexible; cytoplasm colorless; yellow cortical granules 1.2 × 0.8 μm in size; 96-158 macronuclear nodules; 33-37 adoral membranelles; 2-3 buccal cirri; 1 or 2 paramalar cirri; 6-8 frontoterminal cirri; 6-8 transverse cirri; midventral cirri composed 10- 13 pairs; 5 or 6 midventral rows; 42-51 right and 42-49 left marginal cirri; 3 bipolar dorsal kineties.

Distribution. Azerbaijan, Canada, Caspian Sea, France, Korea.

Remarks. This Korean population of B. marina possesses yellowish cortical granules. The presence/absence of cortical granules was unknown in B. marina to date (Berg- er, 2006). Bakuella marina differs from the one of similar species B. agamalievi Borror and Wicklow, 1983 based on the number of buccal cirri (6-8 vs. 1) ( Berger, 2006).

Voucher slides. Two slides of protargol-impregnated specimens were deposited at National Institute of Biological Resources, Korea (NIBRPR0000109465, NIBRPR 0000109466).

Figures

Fig. 8. Bakuella marina in vivo (A-C) and protargol impregnated specimen (D). A. Typical individual (arrow indicates contractile vacuole). B. Cortical granulation on ventral side. C. Cortical granulation on dorsal side. D. Oral and somatic ciliature on ventral view(arrows indicate frontoterminal cirri). Scale bars=50μm.