. The biology of hydra and of some other coelenterates, 1961. Hydra; Cnidaria; Ctenophora; Cnidaria; Hydra. CHARLES F. LYTLE 329 30 - 25 20 I 5 10 ^ Daily. Fig. 11. Production of frustules at three different feeding rates (n = the number of hydranths per colony at the time of feeding). Cultures maintained at 23 (±:1 ). a direct and proportional increase with increased rates of feeding. The production of frustules, however, was affected differentially (Fig. 11). The animals at the two lower feeding rates produced only a few frustules while the animals at the highest rate showed a large increase
. The biology of hydra and of some other coelenterates, 1961. Hydra; Cnidaria; Ctenophora; Cnidaria; Hydra. CHARLES F. LYTLE 329 30 - 25 20 I 5 10 ^ Daily. Fig. 11. Production of frustules at three different feeding rates (n = the number of hydranths per colony at the time of feeding). Cultures maintained at 23 (±:1 ). a direct and proportional increase with increased rates of feeding. The production of frustules, however, was affected differentially (Fig. 11). The animals at the two lower feeding rates produced only a few frustules while the animals at the highest rate showed a large increase in the number of frustules produced. Much of the additional food went preferentially into the production of frustules. The effect of these different feeding rates is summarized in Fig- ure 12. At the lowest feeding rate there were few buds of each type produced. At the intermediate feeding rate there was a 240% increase in the production of hydranths over those produced at the lowest rate of feeding and a 60^ increase in the production of me- dusa buds. Only a increase was observed in the production of frustules. At the highest rate of feeding there was a further in- crease () in the production of hydranth buds over the inter-. 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 Symposium on the Physiology and Ultrastructure of Hydra and Some Other Coelenterates (1961 : Coral Gables, Fla. ); Lenhoff, Howard M; Loomis, W. Farnsworth (William Farnsworth), 1914-. Coral Gables, Fla. , University of Miami Press
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