Comparative Studies on Four Species of Vorticella by Conventional Microscopy

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Abstract
V. campanula, V. microstoma, V. nebulifera, and V. picta were propagated and studied by conventional microscopy. Morphological and behavioral studies made it possible to identify the telotrochs (free-swimming stage) of each species. Body length alone did not distinguish 1 sp. from another; but body shape was species-specific. The telotrochs differed with regard to speed; generally, the larger the telotrochs the lesser their speed and less erratic their movements: they generally moved in a straight line instead of quickly changing directions and reversing their course. Telotrochs differed in the time lapse of behavior pattern, regarding attachment, secretion of stalk, 1st division, etc. The 4 spp. also varied in their pellicular striae (PS) silverline pattern, and the myoneme pattern as revealed by the protargol technique.

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