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. 2013 Feb 6;8(2):e54989. doi: 10.1371/journal.pone.0054989

Figure 10. Effects of seawater temperature on percent apoptotic endosymbiotic Symbiodinium and host coral Sinularia lochmodes cells.

Figure 10

In-hospite, collected over a 12 h period. Corals exposed to 28 to 36°C treatments. • = 28°C; ○ = 30°C;▾ = 32°C; Δ = 34°C; ▪ = 36°C. Data transformed by arcsine for normalization purposes. Zooxanthellae: Significant negative linear regression at 28°C (p<0.05; Y = −0.682X +27.571). Linear trends shown for 30, 32, 34, and 36°C to facilitate comparison (Y = −0.640X +23.105; Y = −0.796X +22.659; Y = −0.427X +23.837; and Y = 1.077X +32.816, respectively). Significant non-linear responses at 30–34°C (p<0.05–0.001). Significant non-linear trend at 36°C as well (p<0.001). Host Cells: No significant linear or non-linear regression at 28–34°C (p>0.05); linear trends shown to facilitate comparison. Significant negative non-linear response at 36°C (p<0.001; Y = 4.630+38.271*[1−e(−0.634X)]).