FIGURE 3.

Stress markers of coral fragments from the four reefs (colors) as indicated by (A) lysosome destabilization of the corals’ cells (%) and (B) malondialdehyde concentration (MDA, μmol L⁻¹ g_AFDM^–1) at the end of the experiment (58 h). At each reef, five colonies were fragmented and five fragments were exposed to increasing temperature (color dots) while five were exposed to ambient temperature (8.5°C, darkened dots). The lines represent the difference between fragments from the same colony. The inserts presents these differences in the coral stress markers (A, % destabilized cells; B, MDA concentration in μmol L⁻¹ g_AFDM^–1) due to the treatment in each reef (color): Each data point represents the difference between the replicate of one colony exposed to 8.5°C for 58 h and the replicate of the same colony exposed to the temperature increase for 58 h. The stars represent significant differences from zero: (A) the difference in cell destabilization in Sula was significantly different from 0 and (B) the difference in MDA concentration was significantly different from 0 in Hola.