. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 236 JOHN L. FULLER is in accord with the observation of Marshall (1924), who notes that Calanus captured by tow-net hauls in the early morning had full gut?, while those caught later in the day often had no food in their ali- mentary tracts. Figure 1 represents the course of t\vo experiments (8 and 11 j which show this rhythm. It is not, however, an invariable. KK;. 1. Diurnal feeding rhythm of Calanns. Stippled areas represent hours between 8 and 8 The scale of Kxperiment 15 i> adjusted by adding to logarit
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 236 JOHN L. FULLER is in accord with the observation of Marshall (1924), who notes that Calanus captured by tow-net hauls in the early morning had full gut?, while those caught later in the day often had no food in their ali- mentary tracts. Figure 1 represents the course of t\vo experiments (8 and 11 j which show this rhythm. It is not, however, an invariable. KK;. 1. Diurnal feeding rhythm of Calanns. Stippled areas represent hours between 8 and 8 The scale of Kxperiment 15 i> adjusted by adding to logarithms of cell numbers. Ordinates: Logarithm-cells per en mm. Abcissae: Time in days. effect, as is shown by the course of Kxperiment 15, also shown in Fig. 1. Marshall likewise found that during the summer feeding occurred during the day as well as at night. Kxperiments 26 and 32 differed from those reported above in being kept in darkness. Table II summarizes the results of these two 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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