Redescription of Two Marine Ciliates (Ciliophora: Urostylida: Pseudokeronopsidae), Pseudokeronopsis carnea and Uroleptopsis citrina, from Korea
Redescription of Two Marine Ciliates (Ciliophora: Urostylida: Pseudokeronopsidae), Pseudokeronopsis carnea and Uroleptopsis citrina, from Korea
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DOI：
10.5635/kjsz.2011.27.3.220
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发表时间：
2011-11-01
期刊：
影响因子：
--
通讯作者：
Min, Gi-Sik
中科院分区：
文献类型：
--
作者：
Baek, Ye-Seul;Jung, Jae-Ho;Min, Gi-Sik
采用活体观察和蛋白银浸渍的方法，对采自黄海和韩国东海的两种海洋尾茎纤毛虫--肉拟角纤毛虫Pseudokeronopsis carnal（Cohn，1866）和桔色尾叶甲纤毛虫Uroleptopsis citrina Kahl，1932进行了形态学研究。此外，还对小亚基核糖体RNA（SSU rRNA）基因进行了测序。这两个物种都是在韩国首次发现。主要诊断关键字如下。角膜假角化症：体轮廓长椭圆形，体色棕红或橙红色; 2额须16-24条，颊须1条，额端须2条，横须7-10条，背须5-7条; 2种皮层颗粒（一种橙红色色素，主要集中在纤毛和背刚毛周围，呈典型的红细胞样排列;另一种无色，血细胞状，分布密集）;收缩泡位于细胞的后半部分，通常位于细胞的后1/3-2/5。柠檬尾叶甲：体轮廓长椭圆形，活体颜色为柠檬黄色;两种类型的皮质颗粒（一种为黄色色素;另一种为血细胞状，密集分布）; 12-18个额纤毛的双冠; 2-3个额端纤毛; 2个中腹行，包括26-35个纤毛（由前成对纤毛、非成对单纤毛和后成对纤毛组成）; 3个背动。此外，将这两个物种的SSU rRNA序列与公共数据库进行比较，结果显示它们具有很高的相似性。
The morphology of the two marine urostyloid ciliates, Pseudokeronopsis carnal (Cohn, 1866) and Uroleptopsis citrina Kahl, 1932, in the family Pseudokeronopsidae, collected from the Yellow Sea, and the East Sea, Korea, respectively, were studied using live observation and protargol impregnation. Additionally, the small subunit ribosomal RNA (SSU rRNA) gene was sequenced. These two species are firstly recorded in Korea. The main diagnostic key is as follows. Pseudokeronopsis cornea: body outline elongate-elliptical, brown-reddish or orange-red in colour in vivo; bicorona of 16-24 frontal cirri; one buccal and two frontoterminal cirri; 7-10 transverse cirri; 5-7 dorsal kineties; two types of cortical granules (one orange-red pigment, mainly grouped around cirri and dorsal bristles, arranged in typical rubra-pattern; the other, colourless and blood-cell-shaped, and densely distributed); contractile vacuole in the posterior half of the cell on the left side, usually in posterior 1/3-2/5. Uroleptopsis citrina: body outline elongate-elliptical, lemon-yellow in colour in vivo; two types of cortical granules (one yellow pigment; the other, blood-cell-shaped, densely distributed); bicorona of 12-18 frontal cirri; 2-3 frontoterminal cirri; two midventral rows comprising 26-35 cirri (consisting of anterior paired cirri, non-paired single cirri, and posterior paired cirri); three dorsal kineties. In addition, the SSU rRNA sequences of the two species were compared with public database of these species and consequently, showed high similarity.