Biosynthesis of pigments as response to light changes in the up-side down jellyfish Cassiopea andromeda

The published data originate from a laboratory experiment with adult Cassiopea andromeda medusae, which were sourced from an established jellyfish culture bred from polyps (origin: Aquarium Berlin) within the aquaria facilities of the Leibniz Centre for Tropical Marine Research (ZMT), Bremen, Germany. Incubation experiments were conducted in experimental tanks (ETs) in the Marine Experimental Ecology unit (MAREE) of ZMT. The individual ETs function as recirculating aquaculture systems with a water volume of ~120 L, with an upper culture unit and a sump tank equipped with a biofilter system and a protein skimmer below. The temperature and salinity were set at 26°C and 35 SA (Red Sea Salt, Red Sea Fish, Israel), respectively, these conditions were controlled and regulated automatically through submerged sensors. The ETs were each illuminated with an Aquaillumination Hydra FiftyTwo HD (AI Hydra 52 HyperDrive, USA) lamp with seven types of LEDs, emitting the full spectrum (380–680 nm) of photoactive radiation (PAR) with a photon flux density of 100 μmol photons/m²/s. […]