. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 2. Orientation of zoeal body axes (a) when swimming upward or downward, and (b) when sinking passively. See text for further details. In one experiment, two unstratified columns were established (25/25) with 40 Zoea III in one, 50 in the other, and hourly observations made over a 24 hour period to determine (1) if there was any cyclic pattern to the behavior and (2) if there was a large difference in results between the columns. In a second experi- ment with two unstratified columns (25/25), 50 Zoea IV were placed in
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 2. Orientation of zoeal body axes (a) when swimming upward or downward, and (b) when sinking passively. See text for further details. In one experiment, two unstratified columns were established (25/25) with 40 Zoea III in one, 50 in the other, and hourly observations made over a 24 hour period to determine (1) if there was any cyclic pattern to the behavior and (2) if there was a large difference in results between the columns. In a second experi- ment with two unstratified columns (25/25), 50 Zoea IV were placed in one column, 25 in the other, to determine whether distribution with depth was a func- tion of larval density. Larvae for all experiments were reared in large mass cultures (larval den- sity: 1 larva per 5-10 ml) of 1000 ml total volume. Larvae were transferred to clean water and fed nauplii of Arteinia daily. Culture salinity corresponded to SL for the given experimental series. Culture temperature was 20 ± 2° C. A brief series of experiments was conducted to determine whether the salinity receptors are located on the antennules and antennae, both of which are known to be involved in chemoreception in adult decapods and other crustaceans. Larvae for these tests were reared at 30% c, 20° C to Zoea III. The antennules (A 1). 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
