Observation on a Japanese population of Pseudoamphisiella alveolata [Kahl, 1932] Song et Warren, 2000 [Ciliophora: Hypotrichida]: morphology and morphogenesis
Observation on a Japanese population of Pseudoamphisiella alveolata [Kahl, 1932] Song et Warren, 2000 [Ciliophora: Hypotrichida]: morphology and morphogenesis
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发表时间：
2006
影响因子：
0.5
通讯作者：
Xiaozhong Hu;Toshikazu Suzuki
中科院分区：
文献类型：
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作者：
Xiaozhong Hu;Toshikazu Suzuki
摘要从日本长崎近海沃茨中分离到一种泡状伪双端藻。通过对活体生物和蛋白银浸渍后的观察来研究其形态和形态发生。形态计量学数据与中国居群的形态计量学数据吻合良好，从而证实了该种的正确性。其形态发生过程与模式种拉卡兹原蜱（P. lacazei）有一些不同之处，主要表现在：（1）后突的口原基和额腹横毛的初生原基可能起源于细胞表面的一个无政府的亲属体区，大多数腹毛不参与这些原基的形成;（2）亲代口前带的后部在原位更新，前部由原基保留;（3）两个分隔器内的FV原基斜条纹是由初生原基分裂产生的。（4）左缘列和背侧运动原基均为“内增殖”发育，尾侧运动原基的后端发育出尾侧运动原基，（5）右缘列的原基平行于FVT-anla gen.（6）靠近最右侧横纤毛的所谓尾状纤毛，实际上是右缘纤毛的迁移。本研究表明，形态发生数据可以用于区分具有相似形态的种和属。
Summary. A population of Pseudoamphisiella alveolata was isolated from the coastal waters off Nagasaki, Japan. Its morphology and morphogenesis were studied by observations on organisms from life and following protargol impregnation. Morphometrical data of this form correspond well with those of the Chinese population, thus the validity of this species is confirmed. Its morphogenetic pr ocesses show a few that differ from those of P. lacazei, the type species of this genus, and main events are documented here: (1) The oral primordium of the opisthe and primary primordium of the fronto-ventral transverse cirri are possibly derived from an anarchic field of kin etosomes originating de novo on cell surface, and most ventral cirri do not contribute to the formation of these primordia; (2) The posterior portion of the parental adoral zone of membranelles is renewed in situ while the anterior part is retained by the proter; (3) Oblique streaks of FVT-anlagen in both dividers are generated from the division of primary primordium. Two buccal cirri are derived from the anter ior two streaks of the FVT-anlagen; (4) The left marginal rows and dorsal kineties equally develop by “within proliferation”; the cauda l cirri develop from the posterior end of each dorsal kinety anlage; (5) The anlagen for the right marginal rows originate parallel to FVT-anla gen; (6) So-called caudal cirri near the rightmost transverse cirri are actually migratory right marginal cirri. The present study d emonstrates that morphogenetic data can be useful in differentiating species and genera with similar morphologies.