. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIBBIE H. HYMAN does not show any movement. The manubrium was not seen to touch the margin but simply to make a nearly right-angled bend towards the stimulated region. In case of food held by the tentacles, the manubrial lip would touch and grasp the food. In a leptomedusa which he called Tiaropsis indicans (stated by Mayer, 1910, to be probably Eutimium socialis), Romanes (1885) found that the tip of the manubrium would be precisely applied to any strongly stimulated spot of the bell. No such exact reactions were seen in an
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIBBIE H. HYMAN does not show any movement. The manubrium was not seen to touch the margin but simply to make a nearly right-angled bend towards the stimulated region. In case of food held by the tentacles, the manubrial lip would touch and grasp the food. In a leptomedusa which he called Tiaropsis indicans (stated by Mayer, 1910, to be probably Eutimium socialis), Romanes (1885) found that the tip of the manubrium would be precisely applied to any strongly stimulated spot of the bell. No such exact reactions were seen in any of the Puget Sound medusae. In all the species observed, the lip of the manubrium (mouth frill) was found to be far more sensitive to chemical stimulation than any other part of the body. Food touched to the mouth frill was invariably. FIG. 4. Stomotoca with mouth frill attached to a Phialidiutit. grasped. Probably the mouth frill in forms with a long manubrium is the chief agent in food capture. Very few of the numerous medusae observed around the laboratory clocks were seen to contain ingested food. It seems probable that the food requirements of these animals are low. Sarsia was never seen with ingested food. Stomotoca regularly attacks other medusae and was not infrequently seen with the expanded mouth attached to Phialidiuin (Fig. 4), sometimes to the larger forms. Stomotoca was also observed attempting to capture a crustacean larva, which escaped. Phialidiuin appeared to feed chiefly on small or minute plankters but might ingest larger crustacean larvae. Aequorca appeared to be a somewhat indis- criminate feeder and was observed with ingested crustaceans, Nereis, and peas and salmon refuse from adjacent canneries. Following a night run of a small Nereis, Aequorca and Halistaura would be seen on the next morning with ingested Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
