. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 366 W. W. TOLLER ET AL. Thirteen or 17 weeks after the end of treatment, 10 of 15 high-light-treated coral columns had the same taxa of Sym- biodinium that they contained before treatment, but 5 of 15 coral columns apparently contained different taxa of Sym- biodinium than they began with (Fig. 3, High Light, Recov- ery). One of these taxonomic differences had been observed at the end of treatment (Colony 5). The other four changes (Fig. 3. High Light. Initial versus Recovery) were Symbio- dinium C to Symbiodinium A and C2 (
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 366 W. W. TOLLER ET AL. Thirteen or 17 weeks after the end of treatment, 10 of 15 high-light-treated coral columns had the same taxa of Sym- biodinium that they contained before treatment, but 5 of 15 coral columns apparently contained different taxa of Sym- biodinium than they began with (Fig. 3, High Light, Recov- ery). One of these taxonomic differences had been observed at the end of treatment (Colony 5). The other four changes (Fig. 3. High Light. Initial versus Recovery) were Symbio- dinium C to Symbiodinium A and C2 (Colony 1); Svmbio- dinimn C to Symbiodinium A (Colony 2); Symbiodinium C to Symbiodinium C, A. and E (Colony 3); and Symbiodinium C to Symbiodinium C and E (Colony 4). These four columns represented four of the five columns with the lowest num- bers of zooxanthellae following treatment. All low-light-treated coral columns experienced major changes in zooxanthellar populations after 13 or 17 weeks back in their original environment (Fig. 3, Low Light. Recovery). Zooxanthellar numbers were about 100-fold higher than after treatment (Recovery versus Treatment: 111 ± X 105 versus ± X 105 zooxanthellae/ cm2; Wilcoxon signed rank test, P < ), and were about 3-fold higher than in the control group ( ± X 105 zooxanthellae/cm2; Wilcoxon signed rank test, P < ). Only Colony 2 appeared normal; the other 14 columns, despite their large numbers of zooxanthellae, were still pale at this time (May 1998). No low-light-treated coral column contained the same zooxanthellae that it had originally (Fig. 3. Low Light. Recovery versus Initial). Eight of them contained mixtures of taxa, and Symbiodinium A was predominant, followed by Symbiodinium E and C2; Symbiodinium C and B were not detected (Fig. 3, Low Light, Recovery). The predominance of Symbiodiniiini A was observed primarily in Colonies 11-15 (sampled 13 weeks after treatment); among Colonies 1-10 (s
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
