. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 136 M. SAIGUSA. Figure 8. Time of day of larval release by the Seto population moni- tored under the moonlight cycle (left panel) and without moon- light (right panel). Diagonal lines (HW) connect the times of high water which should occur in the field at Kasaoka. 55 connects the times of sunset in the field. Horizontal bars (left panel): artificial moonlight. Slope and variance in the activity pattern are presented on the left or right side of the corresponding data. In 1986 experiments these values were not calculat
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 136 M. SAIGUSA. Figure 8. Time of day of larval release by the Seto population moni- tored under the moonlight cycle (left panel) and without moon- light (right panel). Diagonal lines (HW) connect the times of high water which should occur in the field at Kasaoka. 55 connects the times of sunset in the field. Horizontal bars (left panel): artificial moonlight. Slope and variance in the activity pattern are presented on the left or right side of the corresponding data. In 1986 experiments these values were not calculated at the first half of the experimental period where no clear tidal component is seen an the activity pattern. Open circle, darkened circle, and semi-circles represent full moon, new moon, and the first or last quarters of the moon, respectively. this oscillation follows the nocturnal high tide up to 7-8 h over the course of 15 days, it would be better to con- sider its period to be about h in the Seto population. In the Shima population, slopes of the tidal rhythm were larger than those of the Seto population. This suggests that the period of /3-oscillation is closer to that of the daily rhythm.) This hypothesis may be, indeed, an extention of the coupled circadian oscillator model which was de- veloped for the daily rhythm of Drosophila eclosion (Pit- tendrigh and Bruce, 1959; Pittendrigh, 1960). But the important factor is the assumption that the driving oscil- lator postulated in Sesarma circa-tidal systems leads to the other oscillator which clearly differs in period, though slightly. This raises the critical question of what justifica- tion there is for such an assumption which has not been considered previously in circadian rhythms. In addition, the concept of'oscillator' is not so specified as in Pitten- drigh's model. For these reasons, Sesarma's rhythm has been formulated in terms of a and j3 oscillators, not A and B oscillators. According to this model, the dat
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
