Three newly recorded heterotrophic euglenids (Protist), Entosiphon oblongum, Euglena longa and Keelungia pulex from South Korea

Won, J. L. (2022). Three newly recorded heterotrophic euglenids (Protist), Entosiphon oblongum, Euglena longa and Keelungia pulex from South Korea. Journal of Species Research, 11(2), 89-93, https://doi.org/10.12651/JSR.2022.11.2.089

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Abstract

Three heterotrophic euglenids from marine water column (Seodo port, Yeosu) and freshwater sediment (Seodong-chun, Incheon), Korea were identified as Entosiphon oblongum Cavalier-Smith and Vickerman, 2016; Euglena longa (Pringsheim, 1936) Marin and Melkonian, 2003; and Keelungia pulex Chan and Moestrup, 2013 based on morphological characters and 18S rDNA sequence analysis. These species are reported taxonomically for the first time from Korea and are described with micrographs. Diagnoses of these species are as follows. Entosiphon oblongum: phagotrophic, gliding, size in vivo, 23.1-29.3 μm (Avg. 26.5 μm, n=30) long, ovate with a protrusive feeding siphon (apparatus), several deep grooves and two heterodynamic flagella. Euglena longa: osmotrophic, swimming, size in vivo, 32.3-52.2 μm (Avg. 42.2 μm, n=26) long, elongated with many paramylum granules and two flagellar. Keelungia pulex: phagotrophic, gliding, size in vivo, 13.5-19.7 μm (Avg. 16.4 μm, n=97) long, oblong to ovoid with a hook-shaped ingestion apparatus, several dorsal ridges and two flagella.

keywords: Astasia longa, Entosiphon oblongum, Euglena longa, Heterotrophic euglenids, Keelungia pulex

Reference

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Article Contents

Vol.11 No.2

Three newly recorded heterotrophic euglenids (Protist), Entosiphon oblongum, Euglena longa and Keelungia pulex from South Korea

Abstract

Reference

Journal of Species Research