. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. =i 80 cc LJ o 2 O o u_ o QC UJ 00 30 45 TIME IN MINUTES ARTEMIA HOMOGENATE ADDED. 30 45 60 75 TIME IN MINUTES FIGURE 2. Effect of feeding stimuli on concert frequency in H. littoralis; upper graph : number of concerts/animal/S min before and after a single Artemia is captured, based on a group of 10 hydra; lower graph: number of concerts/animal/15 min before and after exposure to homogenate of Artemia, based on a group of 5 hydra. Concerted tentacle flexions consist of a highly coordinated oral sweeping move- ment by all of


. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. =i 80 cc LJ o 2 O o u_ o QC UJ 00 30 45 TIME IN MINUTES ARTEMIA HOMOGENATE ADDED. 30 45 60 75 TIME IN MINUTES FIGURE 2. Effect of feeding stimuli on concert frequency in H. littoralis; upper graph : number of concerts/animal/S min before and after a single Artemia is captured, based on a group of 10 hydra; lower graph: number of concerts/animal/15 min before and after exposure to homogenate of Artemia, based on a group of 5 hydra. Concerted tentacle flexions consist of a highly coordinated oral sweeping move- ment by all of the tentacles, or all tentacles except that involved in prey capture. Such concerts are quite dissimilar from uncoordinated writhing activities, occa- sionally seen when the hydra feeds on a single Artemia. If several specimens of Artemia are simultaneously captured by the polyp, initial concert activity soon gives rise to writhing movements, which continue after all the prey are 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