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Redescriptions of Euplotes encysticus and E. rariseta (Protist: Ciliophora: Euplotida)

Journal of Species Research / Journal of Species Research, (E)2713-8615
2019, v.8 no.1, pp.128-135
https://doi.org/10.12651/JSR.2019.8.1.128

Won Je Lee

Abstract

Two euplotid ciliates, Euplotes encysticus Yonezawa, 1985 and E. rariseta Curds et al., 1974, were isolated from a freshwater pond called Mulgol in Dokdo of the East Sea and from Masan Bay/Jeju Island, Korea, respectively. Both species are redescribed based on live observations and protargol impregnation. Cells of Euplotes encysticus are asymmetrically oval, 63-79×41-61 μm in vivo and capable of encystment. The cells have 31-36 adoral zone of membranelles (AZM), 9 fronto-ventral cirri (FVC), 5 transverse cirri (TC), 2-3 caudal cirri (CC), 2 marginal cirri (MC), 7 dorsal kineties (DK), and 19-22 dorsal cilia in middle DK. The cells of Euplotes rariseta has a small ovoid form and are 32-44×23-35 μm in vivo, 18-22 AZM, 10 FVC, 5 TC, 2 CC, 1 MC and 6 DK.

keywords
Dokdo, Euplotes encysticus, Euplotes rariseta, Euplotid ciliate, Jeju Island, Masan Bay

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