. The biology of Stentor. Stentor. i8 THE BIOLOGY OF STENTOR. Fig. 2. Behavior of Stentor. A. Avoiding response: {a) normal swimming with left rotation and slow spiraling; {b) contraction on adverse stimulation; {c) backward movement even if stimulated at the base; {d) turning to aboral side with resumed forward swimming in new direction. B. Graded response of feeding animal to adverse stimuli: {a) undisturbed posture; {b) turning away; {c) feeding vortex stopped and beating of body cilia reversed; {d) sharp contraction; {e) holdfast released and animal swims away, abandoning lorica {e) if pre
. The biology of Stentor. Stentor. i8 THE BIOLOGY OF STENTOR. Fig. 2. Behavior of Stentor. A. Avoiding response: {a) normal swimming with left rotation and slow spiraling; {b) contraction on adverse stimulation; {c) backward movement even if stimulated at the base; {d) turning to aboral side with resumed forward swimming in new direction. B. Graded response of feeding animal to adverse stimuli: {a) undisturbed posture; {b) turning away; {c) feeding vortex stopped and beating of body cilia reversed; {d) sharp contraction; {e) holdfast released and animal swims away, abandoning lorica {e) if present. With repeated stimuli the response decreases in the direction e-^a. (After Jennings, 1902).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tartar, Vance, 1911-. New York, Pergammon Press
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