摘要
上海采集的似旋毛草履虫为我国首次记录。该虫含无周围收集管系统的伸缩泡２个。表膜下刺丝泡按规则排成约６０列，每列含５０个左右刺丝泡。细胞质尤其中央细胞质内分布有形态、大小不一的折射晶体。细胞表面覆盖有总数不少于３０００个、以周边突起成长方形居多的网格（网格平均长、宽为１．６９、１．０７微米），每个网格中央有１根纤毛（纤毛平均长、粗为６．９６、０．２２微米）。前庭右侧第１列网格以其纵长与左侧的网格列末端相接成口后腹缝，在口后腹缝中后端有一个约长６微米、宽１．５微米的胞肛，该结构与其他草履虫中的曲线形胞肛不同，可能为结构撑开时的形态。位于前庭和口沟区的纤毛相互聚集成紧密排列的状态及纤毛的运动形态等与其他体纤毛表现出一定差异，这在其他草履虫中未见报告。
Paramecium pseudotrichium was found in Shanghai in November of 1992. It was recorded in China for the first time. There were two contractile vacuoles which had not the systems of collecting canals. Trichocysts under the pellicle were organized into about 60 rows with a regular pattern, each of them consisted of about 50 ones. A lot of refractive crystals were distributed in the cytoplasm (specially the centre), those did not appear to have a regular shape and size.The whole surface showed marginal-processed networks, those numbered more three thousands,and most of them had a rectangular shape (1 .69×1 .07μm, mean length and width), each extended a long and thin cilium (6.96× 0.22μm, mean length and diameter) in the centre.Post-suture showed close abutting of the first row in the networks at the right side of vestibulum and the posterior ends of the networks rows at the left side. In the posterior section of the suture, there was a cytoproct, which a slit with 6μm long and 1.5μm wide. The structure was different from the curve-shape cytopyges in other species of Paramecium described. It is postulated that this is likely a structure-opened cytoproct. The cilia got closely together in the vestibulum and oral groove appeared some differences, compared with other somatic cilia in the locmotive morphology. The phenomenon had not been reported in other species of Paramecium.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
1995年第3期83-88,共6页
Journal of East China Normal University(Natural Science)
