Halteria spinning behavior

Description:

[taxonomy:genus=Halteria] Halteria is a ciliate with a 'crown' of membranelles (an adoral zone of membranelles, AZM) on one end of the cell, and spine-like structures radiating from the equatorial region of the cell. In this video, a Halteria cell has oriented itself head-on upon the slide or coverslip surface and so its rotational motion is evident. At one point, it orients obliquely, and because it is anchored by something to the surface, it spins around in a circle. From a sample that has been kept for >1 week. Originally collected from pond, NUS botany garden.