Two Newly Recorded Estuarine Ciliates,Euplotes vannus and E. parawoodruffi(Ciliophora: Spirotrichea: Euplotida) from Korea

권춘봉,Youn Seung Kang,신만균 한국동물분류학회 2007 Animal Systematics, Evolution and Diversity Vol.23 No.2

Two euplotid ciliates collected from the estuarine littorals in Korea were identified as Euplotes vannus(Mller,1786) and E. parawoodruffi Song and Bradbury, 1997. These species are reported taxonomically for the firsttime from Korea. These two species are redescribed with illustrations, photos and biometry based on live andsilver impregnated specimens. Diagnostics of each species are as follows. E. vannus: size in vivo94-111× 55-75 m (average 103× 60 m), adoral zone of membranelles (AZM) 70% of cell length with 57-74 adoralmembranelles(AM) and terminating close to hook-shape, macronucleus(Ma) C-shaped with twisted foot-like,10 frontoventral (FVC), 5 transverse (TC), 4-7 (average 5) caudal cirri (CC), 9-10 dorsal kineties (DK), mid-dorsal kinety with 15-22 cilia; silver-line system single vannus type. E. parawoodruffi: size in vivo 125-163×72-100 m, (average 141× 87 m), dorsally strongly arched, body shaped reserved triangular. AZM 67-83%of cell length with 60-85 AMs, 9 FVC, 5 TC, 4 CC, 9 DK; mid-dorsal kinety with 20-30 cilia, double-eurysto-mus type, T-shaped Ma with equal sized right and left arms or right arm shortened slightly.

Redescription of Previously Unknown Euplotine Ciliates,Euplotes charon and Diophrys oligothrix(Ciliophora: Spirotrichea: Euplotida), from Korea

권춘봉,신만균 한국동물분류학회 2006 Animal Systematics, Evolution and Diversity Vol.22 No.1

Two ciliates of suborder Euplotina collected from the two habitats (estuarine littoral and sewage treatment plant) in Ulsan, Korea were Euplotes charon ($M\ddot{u}ller$, 1773) and Diophrys oligothrix Borror, 1965. These two species are reported for the first time from Korea. The description was based on the observation of living and silver impregnated specimens. Diagnostic characteristics of these species are as follows. E. charon: size in vivo about $90-130\times65-80{\mu}m$, adoral zone of membranelles over 79.5% of cell length with 54-80 adoral membranelles; right margin of the peristome shaped sinusoidal form and passed through adoral zone of membranelles; buccal cavity wide anteriorly; 10 frontoventral, 5 transverse, 4 caudal cirri, 12 dorsal kineties, mid-dorsal kinety with 21 -25 dorsal bristles; silver-line system double-eurystomus type. D. oligothrix: size in vivo about $80-90\times30-70{\mu}m$; body shape ovoid with prominent right concave posterio-lateral end, two irregular elongated macronuclei with one micronucleus, respectively; 7 fronto-ventral, 5 transverse, 2 left marginal and 2 caudal cirri, 4 dorsal kineties with prominent bristles about $9-14{\mu}m$ long in vivo.

Two Newly Recorded Ciliates,Oxytricha longigranulosa and O. marina (Ciliophora:Spirotrichea: Sporadotrichida) from Korea

권춘봉,신만균 한국동물분류학회 2008 Animal Systematics, Evolution and Diversity Vol.24 No.1

Two oxytrichid ciliates collected from the mosses and estuarine littoral in Korea were identified as Oxytricha longigranulosa Berger and Foissner, 1989 and O. marina Kahl, 1932. These species are reported for the first time from Korea. The description was based on living and protargol impregnated specimens. Diagnostic characters for each species are as follows. Oxytricha longigranulosa: Cell in vivo 80-115×30-50 μm, mostly 90 ×40 μm. Length/width ratio about 2.4/1. Cortical granules about 1×1.5 μm in size, colorless, arranged in short and discontinued longitudinal rows. Four frontoventral cirri. Adoral zone of membranelles (AZM) covering 30-50% of cell length with 25-27 adoral membranelles (AM). Buccal area flat, typical Oxytricha pattern. Five transverse cirri, 19-23 right marginal cirri, 19-24 left marginal cirri, three caudal cirri, five dorsal kineties. Two macronuclear nodules 2 in number and spherical in shape, two micronuclei in number. Oxytricha marina: Cell in vivo 100-150×30-60 μm. Cytoplasm colorless without cortical granules. Four frontoventral cirri. AZM covering 50% of cell length with 28-44 AMs, Buccal area flat, typical Oxytricha pattern. Five transverse cirri, 23-38 right marginal cirri, 19-25 left marginal cirri, three caudal cirri, five dorsal kineties. Two macronuclear nodules and spherical in shape, 1-5 micronuclei, mostly two in number.

First Records of Two Aquatic Oxytrichid Ciliates (Ciliophora: Sporadotrichida: Oxytrichidae) from Korea

권춘봉,신만균 한국동물분류학회 2011 Animal Systematics, Evolution and Diversity Vol.27 No.1

For investigation of the Korean ciliate fauna, two oxytrichid ciliates, Histriculus histrio (Müller, 1773) and Sterkiella thompsoni Foissner, 1996, were collected from freshwater and brackish waters in South Korea,respectively. These two ciliates are reported for the first time in Korea. Descriptions were based on observations of live and silver stained specimens. Diagnoses of these species are as follows. Histriculus histrio: body is approximately 190×85 μm in size, almost ellipsoidal in shape, posterior part rather thin and very translucent. Cortical granules are absent. Both marginal rows are almost confluent at the posterior end. Six dorsal kineties are present. Sterkiella thompsoni: body is approximately 140×50 μm in size. Body margins are usually in parallel. Cortical granules are absent. Invariably, four dorsal kineties are present. Two caudal cirri are located on the dorsal surface. Three ellipsoidal macronuclear nodules are present.

Description of Two Oxytrichid Ciliates (Ciliophora: Sporadotrichida: Oxytrichidae) Newly Reported from Korea

권춘봉,신만균 한국동물분류학회 2010 Animal Systematics, Evolution and Diversity Vol.26 No.3

To investigate the Korean ciliate fauna, two oxytrichid ciliates, Laurentiella strenua (Dingfelder, 1962) and Notohymena australis (Foissner and O’Donoghue, 1990) were collected from the Taehwa River in Ulsan,South Korea. These two ciliates are reported for the first time in Korea. Descriptions were based on the observation of live and silver stained specimens. Diagnoses of these species are as follows: Laurentiella strenua:body is approximately 320×170 μm in size, an inverted triangular shape. Cytoplasmic globules are present in both anterior and posterior margins, transparent and sized 10-15 μm in live specimens. Adoral zone of membranelles is covering about 50% of body length. Frontoventral-transverse cirri are arranged diagonally into 5rows. Transverse cirri are arranged almost longitudinally and varied 4-6 in number. Dorsal kineties are 11rows with multiple fragmentations. Macronuclei are 4-5 in number. Notohymena australis: body is approximately 170×50 μm in live specimens, slender and long ellipsoidal shape. Yellowish green cortical granules are present as pairs or rows which composed of 3-6 granules. Adoral zone of membranelles is covering about 36% of the body length, composed of 39-50 adoral membranelles. Dorsal kineties is 6 rows. Macronuclei are 2 in number.

Redescription of Two Terrestrial Hypotrichous Ciliates from Jindo Island, Korea

권춘봉,신만균,Kwon, Choon-Bong,Shin, Mann-Kyoon The Korean Society of Systematic Zoology 2005 Korean Journal of Systematic Zoology Special Issue Vol.5 No.-

진도의 육상에 서식하는 하모섬모충류 2종, 근사전열하모충 (Holostichides chardezi Foissner, 1987)과 팔핵경피하모충[Rigidocortex octonucleatus(Foissner, 1988)]은 한국에서 처음으로 발견된 종으로서 이들에 대해서 자세히 재 기재하고 이들의 형태적 변이에 대해서 고찰하였다. 이 두 종의 식별형질에 대해서 요약하면 다음과 같다. 근사전열하모충은 길쭉한 몸을 가지며 뒤틀리거나 유연하다. 표층에는 연노랑의 알갱이 고루 분포하고, 막판구대는 체장의약 $28\%$를 차지한다. 좌우의 중앙복극모열이 쌍으로 존재하며 좌측열은 구부정점까지 이르고, 우측열은 몸의 중앙까지 이른다. 후방극모가 없고, 좌우 측극모열은 몸의 후단까지 이르지만 서로 연결되지 않는다. 28-42개의 대핵과 1-5개의 소핵은 몸 전체에 흩어져 있다. 미극모는 3개, 등쪽섬모열은 4열이다. 팔핵경피하모충은 계란형의 몸을 가지며 뻣뻣하거나 잘 수축하지 않는다. 연노랑의 세포질 결정체와 지방체가 촘촘히 존재한다. 막판구대는 체장의 약 $40\%$를 차지한다. 후방극모는 5개이고. 좌우 측극모열은 몸의 후단까지 이르지만 서로 연결되지 않는다. 8개의 대핵이 몸의 중앙에 세로로 배열한다. 미극모는 3개, 등쪽섬모열은 분절된 것이 많으며 7-10열이다. Two hypotrichous ciliates inhabiting the representative terrestrial habitats of Jindo Island, Holostichides chardezi Foissner, 1987 and Rigidocortex octonucleatus (Foissner, 1988) are found from Jindo Island. These two species are newly recorded from Korea. The description was based on the observation of living specimens, protargol impregnated specimens and biometric analysis. The morphological variations among the populations of these species were investigated with morphometry. The diagnostic characteristics of these species are as follows: Holostichides chardezi : elongate body flexible and twisted, yellowish subpellicular granules scattered entire cortex, adoral zone of membranelles covering about $28\%$ of body length, left and right rows of mid-ventral cirri paired, left row ended at buccal vertex and right row extending to center of body, no transverse cirri, both marginal rows of cirri not confluent at posterior end, 28-42 macronuclei and 1-5 micronuclei scattered entire body. 3 caudal cirri and 4 dorsal kineties. Rigidocortex octonucleatues: elongate-oval body rigid and not contractile, yellowish cytoplasmic crystals and fat globules densely packed, adoral zone of membranelles covering about $40\%$ of body length, 5 transverse cirri, both marginal rows of cirri not confluent at posterior end, 8 macronuclei longitudinally arranged in median of cell, 3 caudal cirri and 7-10 fragmented dorsal kineties.

Two Oxytrichid Ciliates, Cyrtohymena primicirrata and Oxytricha granulifera (Ciliophora: Sporadotrichida: Oxytrichidae) Unknown from Korea

권춘봉,신만균 한국동물분류학회 2013 Animal Systematics, Evolution and Diversity Vol.29 No.1

This study reports the discovery of two oxytrichid ciliates, Cyrtohymena primicirrata (Berger and Foissner,1987) and Oxytricha granulifera Foissner and Adam, 1983, in Jeju Island, Korea. The morphology of the two species was studied using live observation and protargol impregnation. These species are described as follows:Cyrtohymena primicirrata has a body size in live specimens 90-140×40-60 μm, length : width ratio 2.3 : 1on average; elongated and slender obovate in outline of body. Cortical granules are shiny yellow on the ventral and dorsal side. Adoral zone of membranelles (AZM) is covering about 48% of the cell with about 38 adoral membranelles. Arrangement of undulating membranes is ordinary Cyrtohymena pattern. Dorsal kineties is six rows with 5 μm long bristles. Oxytricha granulifera has a body size in live specimens 90-115×25-38 μm,length : width ratio 3.31 on average; elongated ellipsoidal in outline of body. Cortical granules are colorless on the ventral and dorsal side. AZM is covering 28% of the cell length in vivo with about 24 adoral membranelles. Arrangement of undulating membranes is Oxytricha pattern. Dorsal kineties is five rows with about 3 μm long dorsal bristles.

Two Newly Recorded Ciliates, Oxytricha balladyna and O. longa (Ciliophora: Spirotrichea: Sporadotrichida) from Korea

권춘봉(Choon Bong Kwon),신만균(Mann Kyoon Shin) 한국동물분류학회 2004 Animal Systematics, Evolution and Diversity Vol.20 No.2

Redescription of Two Terrestrial Hypotrichous Ciliates from Jindo Island, Korea

Choon Bong Kwon(권춘봉),Mann Kyoon Shin(신만균) 한국동물분류학회 2005 Korean Journal of Systematic Zoology Special Issue Vol.- No.5

First Records of Two Spirostomum Ciliates (Heterotrichea: Heterotrichida: Spirostomidae) from Korea

장석원,권춘봉,신만균 한국동물분류학회 2012 Animal Systematics, Evolution and Diversity Vol.28 No.1

Two Spirostomum species collected from freshwater in Korea were identified as S. caudatum (Müller, 1786)and S. teres (Claparède and Lachmann, 1858). They are recorded for the first time in Korea. The description was based on the observation of living specimens and protargol impregnated specimens. Diagnostics of these species are as follows. Spirostomum caudatum: body size 400-450×20-30 μm in vivo, shaped long and slender with a tapered posterior part, highly contractile; macronucleus ellipsoid; adoral zone of membranelles occupied 30% of body length; somatic kineties 14-22 in number. Spirostomum teres: body size 240-460×25-40 μm in vivo, shaped long and slender with a flattened posterior end, highly contractile; cortical granules arranged in 2-3 rows; adoral zone of membranelles occupied 50% of body length; somatic kineties 20-30 in number;macronucleus ellipsoid; micronuclei 2-3 in number. Spirostomum caudatum and S. teres are the most similar congeners, but they are different in the posterior part of body (tail-like posterior part vs. flattened posterior end), length of adoral zone of membranelles in body length (1/3 vs. 1/2), and the number of somatic kineties (14-22 vs. 20-30). These populations match with European populations in morphological characters.