Lei Yanli, Choi Joong Ki, Xu Kuidong
Department of Oceanography, Inha University, Inchon, Korea.
J Eukaryot Microbiol. 2002 Sep-Oct;49(5):402-6. doi: 10.1111/j.1550-7408.2002.tb00219.x.
The morphology and infraciliature of a new hypotrichous ciliate, Euplotidium smalli n. sp., isolated from eutrophic coastal water in Korea, were observed in living cells and investigated using the protargol impregnation technique. This new ciliate bears 13-14 frontoventral cirri, 7 transverse cirri, and 5-6 dorsal kineties. Neither left marginal cirrus nor caudal cirrus is present. The new species differs from the related species, Euplotidium agitatum Noland, 1937 in the different number of frontoventral and transverse cirri and different body shape. With the exception of Euplotidium agitatum, the known species of the genus Euplotidium Noland, 1937 with the presence of left marginal cirrus are assigned to a new genus, Paraeuplotidium n. g. Diagnosis of Paraeuplotidium is: Gastrocirrhidae with funnel-shaped buccal cavity; with frontoventral and transverse cirri; left marginal cirrus present. Paraeuplotidium itoi (Ito, 1958) n. comb. is designated here the type species. Four additional species are included: Paraeuplotidium psammophilus (Vacelet, 1961) n. comb., Paraeuplotidium arenarium (Magagnini & Nobili, 1964) n. comb., Paraeuplotidium helgae (Hartwig, 1980) n. comb., and Paraeuplotidium prosaltans (Tuffrau, 1985) n. comb. An improved generic diagnosis of Euplotidium is suggested based on morphology and infraciliature characters: marine hypotrichs with a funnel-shaped buccal cavity; with frontoventral and transverse cirri; neither left marginal cirrus nor caudal cirri present.
从韩国富营养化沿海水域分离出一种新的腹毛目纤毛虫——斯氏真游仆虫（Euplotidium smalli n. sp.），对其活体细胞的形态和纤毛下器进行了观察，并采用蛋白银染色技术进行了研究。这种新的纤毛虫有13 - 14根额腹棘毛、7根横棘毛和5 - 6列背纤毛。无左缘棘毛和尾棘毛。该新物种与相关物种1937年命名的激惹真游仆虫（Euplotidium agitatum Noland）在额腹棘毛和横棘毛数量以及体型上存在差异。除激惹真游仆虫外，1937年命名的真游仆虫属（Euplotidium Noland）中具有左缘棘毛的已知物种被归入一个新属——拟真游仆虫属（Paraeuplotidium n. g.）。拟真游仆虫属的诊断特征为：腹棘科，具漏斗形口腔；有额腹棘毛和横棘毛；有左缘棘毛。伊藤拟真游仆虫（Paraeuplotidium itoi (Ito, 1958) n. comb.）在此被指定为模式种。另外还包括四个物种：沙栖拟真游仆虫（Paraeuplotidium psammophilus (Vacelet, 1961) n. comb.）、砂质拟真游仆虫（Paraeuplotidium arenarium (Magagnini & Nobili, 1964) n. comb.）、海尔格拟真游仆虫（Paraeuplotidium helgae (Hartwig, 1980) n. comb.）和盐生拟真游仆虫（Paraeuplotidium prosaltans (Tuffrau, 1985) n. comb.）。基于形态和纤毛下器特征，提出了真游仆虫属改进后的属诊断特征：海洋腹毛类，具漏斗形口腔；有额腹棘毛和横棘毛；无左缘棘毛和尾棘毛。
