Colorimetric Detection of Caspase 3 Activity and Reactive Oxygen Derivatives: Potential Early Indicators of Thermal Stress in Corals

Figure 5

Photosynthetic efficiencies as quantum yield () measured by PAM fluorometry of Pocillopora damicornis corals () in control (26°C); recovery treatment (ramping from 26°C at day 0 to 32°C at day 6 then cooling to 26° at day 9); and stress treatment (ramping from 26°C at day 0 to 32°C at day 6 and then stable at 32°C until day 16) during 16 days. Asterisks () stand for a significant difference ().