. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 24 12 24 12 24 12 24 12 24 LOCAL TIME 12 24 12 24 FIGURE 2. The temporal pattern of expansion and contraction of the polyps of two specimens of Tubipora musica Linnaeus in natural light, then during 60 hours in darkness, fol- lowed by natural light. The tentacle stage was scored as in Figure 1. Arrows denote the time when zooplankton was added to the aquaria. The dark periods are shown as black bars on the abscissa. The temperature was kept at 28 ± ° C. the length of the tentacles. Usually specimens were first examined
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 24 12 24 12 24 12 24 12 24 LOCAL TIME 12 24 12 24 FIGURE 2. The temporal pattern of expansion and contraction of the polyps of two specimens of Tubipora musica Linnaeus in natural light, then during 60 hours in darkness, fol- lowed by natural light. The tentacle stage was scored as in Figure 1. Arrows denote the time when zooplankton was added to the aquaria. The dark periods are shown as black bars on the abscissa. The temperature was kept at 28 ± ° C. the length of the tentacles. Usually specimens were first examined for a day or two in the tank exposed to natural illumination and were then transferred during the night to the continuously darkened tank for further observation. A few specimens were observed in continuous light from cool white fluorescent lamps in an incubator at an intensity of 100 lux at 28 ± ° C. Exceptions to this general procedure will be noted. Only specimens in good condition without signs of damage were used. Sand was placed in the tanks for supporting Tubipora in an upright position, In the experiments testing the light sensitivity of Fungia, an electronic flash unit (Sun Pac GT3) giving flashes of 1 msec duration, 6000° K color temperature, was fired once. The subsequent behavior of tentacles was observed at intervals of a minute thereafter until the tentacles were completely reexpanded. For photography of tentacles, a Nikon N355 Photomicrographic dark box was attached to the dis- secting scope, and the specimens were illuminated with the flash unit described above. RESULTS Observations made in the field while snorkeling over the reefs around the Banda Islands during the day confirmed that the majority of both hard and soft corals were in the contracted condition. An enumeration of the species with expanded or contracted tentacles made in the afternoon on two occasions, one at Banda and the other in Weda Bay, both gave an approximate- figure of 80'/ of all
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
