Spirotontonia taiwanica n. sp. (Ciliophora: Oligotrichida) from the Coastal Waters of Northeastern Taiwan: Morphology and Nuclear Small Subunit rDNA Sequence
Spirotontonia taiwanica n. sp. (Ciliophora: Oligotrichida) from the Coastal Waters of Northeastern Taiwan: Morphology and Nuclear Small Subunit rDNA Sequence
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DOI：
10.1111/j.1550-7408.2010.00494.x
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发表时间：
2010-09
影响因子：
2.2
通讯作者：
Sheng‐Fang Tsai;Jun-Yu Chen;Kuo-Ping Chiang
中科院分区：
文献类型：
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作者：
Sheng‐Fang Tsai;Jun-Yu Chen;Kuo-Ping Chiang
摘要。本文采用活体观察、原targol制备及分子资料等方法，报导台湾东北沿海海域分离到的海洋少毛纤毛虫台湾螺虫（Spirotontonia Taiwan . sp.）。新种与最相似的已知同系物鼻甲螺旋体在以下特征上不同：(1)颊膜数量较少（11-13比13-17）；(2)更高的轮数（2.5 vs. 1.5）；(3)大核结节数量较少（20-31 vs 28-40）；(4)更大的细胞尺寸（80-104 × 40-72 vs. 44-75 × 29-56 μm）；(5)细胞前端至颊顶较大（50 μm vs. 33 μm）；(6)细胞长与细胞宽之比较大（1.74 vs. 1.38）；(7)颊带运动的起始点不同（颊顶后与颊带左侧）；(8)后半轮的L形亲金结构消失，偶尔前1-10个双动体消失（即是与否）。分子数据也显示了两个不同的物种，偏离了2%或33%的碱基对。
ABSTRACT. The marine oligotrichous ciliate Spirotontonia taiwanica n. sp. isolated from the coastal waters of northeastern Taiwan is reported, using live observation, protargol preparations and molecular data. The new species differs from the most similar, known congener Spirotontonia turbinata in the following features: (1) lower number of buccal membranelles (11–13 vs. 13–17); (2) higher number of whorls of girdle kinety (2.5 vs. 1.5); (3) lower number of macronuclear nodules (20–31 vs. 28–40); (4) larger cell size (80–104 × 40–72 vs. 44–75 × 29–56 μm); (5) larger anterior cell end to buccal vertex (50 vs. 33 μm); (6) larger ratio of cell length to cell width (1.74 vs. 1.38); (7) the different beginning of the girdle kinety (posterior to the buccal vertex vs. left of the buccal zone portion); and (8) the disappearance of the L‐shaped argyrophilic structures in the last half whorl and occasionally the first 1–10 dikinetids (i.e. yes vs. no). The molecular data also reveal two distinct species, deviating by 2% or 33% base pairs.