. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 624 STEFANO, CATAPANE, AND STEFANO o" o 14 12 10 8 LLJ CO 0 50 Hz - 5 Hz o CONTROL O 6-OHDA A AMPT • 5, 6-DHT. 0 12 15 18 MINUTES 21 24 27 30 FIGURE 3. Lateral ciliary activity (beats/min ± ) of VG preparations is shown. Eacli point represents the mean of five preparations. The preparations were observed for 15 min before starting the experiments. Groups of animals were preinjected 12 hr earlier with 5,6-DHT or four days earlier with 6-OHDA or AMPT. Electrical stimulation at 5 or 50 Hz was delivered to the branch
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 624 STEFANO, CATAPANE, AND STEFANO o" o 14 12 10 8 LLJ CO 0 50 Hz - 5 Hz o CONTROL O 6-OHDA A AMPT • 5, 6-DHT. 0 12 15 18 MINUTES 21 24 27 30 FIGURE 3. Lateral ciliary activity (beats/min ± ) of VG preparations is shown. Eacli point represents the mean of five preparations. The preparations were observed for 15 min before starting the experiments. Groups of animals were preinjected 12 hr earlier with 5,6-DHT or four days earlier with 6-OHDA or AMPT. Electrical stimulation at 5 or 50 Hz was delivered to the branchial nerve at the indicated times. The of each point was less than 10% of the beating rates. still failed to accelerate beating but stimulations at 50 Hz depressed the cilia (Fig. 3). Laboratory study Animals were collected from Long Island Sound during October and main- tained at 5-6° C, 15-16° C and 20-24° C in ASW under otherwise identical conditions for six days. Table III shows that lateral ciliary rates are dependent on the temperature at which the animals were kept. All the preparations were observed at the same temperature, 20° C. Groups of animals that were kept at these temperatures but under constant darkness, except for irregularly spaced intervals when the water was changed, were also observed. Lateral ciliary beating did not vary in respect to different lighting cycles during the time course of the experiments. DISCUSSION The field experiments demonstrated that ciliary activity of whole animal prep- '-utions was not constant but exhibited a diurnal rhythm which was independent of the ides. The effects of temperature changes could not be distinguished from. 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
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
