Kusuoka Y, Watanabe Y
Department of Biology, Faculty of Science, Tokyo Metropolitan University, 2-1-1 Fukasawa, 158, Setagaya-ku, Tokyo, Japan.
Oecologia. 1987 Aug;73(1):16-20. doi: 10.1007/BF00376971.
A computerized system was devised to trace the attachment, growth and disappearance of peritrich ciliates in an urban river. By tracing the development of each Carchesium polypinum colony in the river, it was possible to estimate the actual growth rate of this species without considering the effect of immigration. The survival and colonization rates of the colonies and individuals of solitary species could also be estimated. C. polypinum showed high growth rates (r=1.370 day, doubling time 12.14 h). The number of daily colonizers also increased at a high rate, and the combination of growth and colonization caused very high population increase rates at the area level. Because of its low survivorship, the rate of Vorticella microstoma increase was much lower than previously reported. The survival of solitary species and small colonies was lower than with large colonies, and fewer new colonizers survived with the development of the attached microbial community.
设计了一个计算机系统来追踪城市河流中周丛生纤毛虫的附着、生长和消失情况。通过追踪河流中每个聚缩虫群落的发展情况，可以在不考虑迁入影响的情况下估计该物种的实际生长速率。也可以估计群体和单个物种的存活和定殖率。聚缩虫显示出较高的生长速率（r = 1.370天，倍增时间12.14小时）。每日定殖者的数量也以很高的速率增加,并且生长和定殖的结合导致在区域水平上非常高的种群增长率。由于其低存活率，小口钟虫的增长率远低于先前报道的。单个物种和小群体的存活率低于大群体，并且随着附着微生物群落的发展，存活的新定殖者较少。
