The
control treatment corresponded to individuals kept without food.
Containerswith sea urchinswere randomly distributed in the tank. Seawater
was provided at a flow rate of 145±9 ml/min per container, the
water temperature was 10.2 ± 0.4 °C, the salinity was 32.0 ± 0.5 ppm,
and a light regime of 12:12 (light:dark) was applied.