. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 40 80 120 160 200 ENGULFMENT TIME (SECS.) 240 B. TENTACLE REACTION TIME I. 20 O 10 <r UJ Q. ^••••BBBaHH&HBMHHB 0 2 4 6 8 10 TENTACLE REACTION TIME (SECS.) FIGURE 1. Distributions of engulfment and tentacle reaction times for H. littoralis; A: histogram of the per cent distribution of engulfment times for a group of 27 hydra; B: histogram of the per cent distribution for tentacle reaction times for a group of 102 hydra. the shortening, depending on the position of the attachment. Such activities of the stimulated tenta
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 40 80 120 160 200 ENGULFMENT TIME (SECS.) 240 B. TENTACLE REACTION TIME I. 20 O 10 <r UJ Q. ^••••BBBaHH&HBMHHB 0 2 4 6 8 10 TENTACLE REACTION TIME (SECS.) FIGURE 1. Distributions of engulfment and tentacle reaction times for H. littoralis; A: histogram of the per cent distribution of engulfment times for a group of 27 hydra; B: histogram of the per cent distribution for tentacle reaction times for a group of 102 hydra. the shortening, depending on the position of the attachment. Such activities of the stimulated tentacle bring the prey near to the mouth and precede a concerted flexion of the group of tentacles (termed a concert). As such concrts repeatedly occur, the mouth opens and begins to creep around the prey. At this stage the concerted tentacular movements often are replaced by uncoordinated writhing activities. Such writhing movements of the tentacles have been reportd by sev- eral other workers (Ewer, 1947, Loomis, 1955, Lenhoff, 1961b). The mouth continues to creep around the Artemia, finally closing about it. The time in. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
