. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1. t vf f ?(c) vf ?(c) vf '(vf) vf '(vf) '(vf) vf ?(c) f hr hr 19 20 21 22 23 FIGURE 3A. Time of day of larval release in Sesarma haematocheir 21 July to 8 August 1975, shown by number of females observed per 5 min in relation to lunar phase, times of high (solid diagonal lines) and low (broken diagonal lines) tides occurring at the nearby seacoast, times of sunset (downward solid arrows) and times of moonrise (upward broken arrows) and moonset (downward broken arrows). Weather during observations: very fine (vf), fine (f),
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1. t vf f ?(c) vf ?(c) vf '(vf) vf '(vf) '(vf) vf ?(c) f hr hr 19 20 21 22 23 FIGURE 3A. Time of day of larval release in Sesarma haematocheir 21 July to 8 August 1975, shown by number of females observed per 5 min in relation to lunar phase, times of high (solid diagonal lines) and low (broken diagonal lines) tides occurring at the nearby seacoast, times of sunset (downward solid arrows) and times of moonrise (upward broken arrows) and moonset (downward broken arrows). Weather during observations: very fine (vf), fine (f), cloudy (c), rain (r), heavy rain (hr). As explained in Fig. 2A, substitute data was used for field observations not carried out on 25, 27, 29, 31 July and 1 and 3 August. Sunset times also substituted on these days. water of spring tides might have the best chance of reaching the sea and larvae released at the time of high water on the following days would have a better chance of reaching the sea than during other tidal phases. Larval release activities in S. dehaani showed no clear semilunar rhythm (Fig. 2C), and were not well synchronized or timed to coincide with high tides occurring after sunset (Fig. 3C). The zoeae of this species have the highest tolerance of fresh water among three species. Even released at ebb tide, they would live in fresh water until the following receding water carried them downriver. In addition, distribution of this species was limited to bottomlands near the sea (Saigusa, 1978). Many crabs were found in the riverside banks and rice paddies downstream from the observation site. Thus, females may release their larvae into brackish 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, Ma
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
