. The Biological bulletin. Biology; Zoology; Marine biology. REGULATION OF FISSION IN H. LUCIAE 483 which were fed Artcmia. At 26° C little or no delay occurred prior to the onset of fission; hence k and kadi were essentially identical. Only when anemones were fed once everv two davs at 16° C was feadj significantly larger than 1; (Mest, P<). Values of kmV] in experimental cultures ranged from (doubling time = days) at 16° C to (doubling time = days) at 26° C, in cultures fed every second day. Analyses of temperature and feeding effects showed both factors to sign
. The Biological bulletin. Biology; Zoology; Marine biology. REGULATION OF FISSION IN H. LUCIAE 483 which were fed Artcmia. At 26° C little or no delay occurred prior to the onset of fission; hence k and kadi were essentially identical. Only when anemones were fed once everv two davs at 16° C was feadj significantly larger than 1; (Mest, P<). Values of kmV] in experimental cultures ranged from (doubling time = days) at 16° C to (doubling time = days) at 26° C, in cultures fed every second day. Analyses of temperature and feeding effects showed both factors to significantly affect k and A'ailj, based upon comparisons between 21° and 26° C regimens (Table I). Temperature coefficients (Qio) for £a(lj over the 21 to 26° C temperature range were and for feeding frequencies of 2 and 4 days, respectively (Table II). Thus, the difference in feeding frequency did not influence the effect of temperature upon kiuii in this range. Since the Qio for the 16 to 21° C range was much larger (Table II), the greatest effect of temperature on kaij occurred below 21° -b- 21 °C 16°C Days Figure 3. Semilogarithmic plot of numerical increase through longitudinal fission in cultures of H. luciae fed once every 4 days. Each point represents a mean of six cultures, each initially containing 10 anemones; error bars are standard deviations. Three experi- mental culture temperatures were used: a), 26° C; (h) 21° C; (c), 16° 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 Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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