Patterson D J, Hausmann K
Microbios. 1981;31(123):39-55.
The feeding behavior of the heliozoon Actinophrys sol was investigated using the ciliate Colpidium colpoda as food. The ciliate is caught by adhesion to the arms of the heliozoon. Within 20 min the prey is enclosed by a funnel-shaped pseudopodium which progresses over the prey by the action of its differentiated leading edge. Independent Actinophrys cells may fuse together during prey capture and the early stages of prey digestion. After prey ingestion, the ciliate is lysed and the contents of the food vacuole coagulate. Much of the fluid is removed from the food vacuole and, within 4 h of feeding, the food vacuole has condensed around its coagulated contents. As food vacuole condensation occurs, the peripheral region of the heliozoon cell becomes vacuolated. The appearance of the cell and of the food vacuole remain the same for about 12 h, after which time the undigested residues in the food vacuoles are egested, fused masses of cells separate as uninucleate cells and nuclear division may occur. During feeding, the extrusomes are greatly depleted. These bodies are implicated in the processes of food capture and in the production of food vacuole membrane.
以纤毛虫类的结肠肾形虫作为食物，对太阳虫类的放射太阳虫的摄食行为进行了研究。纤毛虫通过附着在太阳虫的臂上而被捕获。在20分钟内，猎物被一个漏斗状的伪足包围，该伪足通过其分化的前缘的作用在猎物上移动。独立的放射太阳虫细胞在捕获猎物和猎物消化的早期阶段可能会融合在一起。猎物被摄取后，纤毛虫被溶解，食物泡中的内容物凝结。大部分液体从食物泡中排出，在进食4小时内，食物泡围绕其凝结的内容物浓缩。随着食物泡浓缩的发生，太阳虫细胞的周边区域出现空泡化。细胞和食物泡的外观在大约12小时内保持不变，之后食物泡中未消化的残渣被排出，融合的细胞团分离为单核细胞，并且可能发生核分裂。在进食期间，射出体大量消耗。这些结构与食物捕获过程以及食物泡膜的产生有关。
