ARGININA 3 D-SERINE 3 FEEDING RESPONSE 3 FOTOISOMERIZACION 3 FOTOLIBERACION 3 HYDRA VULGARIS 3 L-ARGININE 3 NOREPINEFRINA 3 NOREPINEPHRINE 3 PHOTOISOMERIZATION 3 PHTORELEASE 3 RESPUESTA ALIMENTARIA 3 RUTENIO- BIPIRIDINA 3 RUTHENIUM-BIPYRIDINE COMPLEXES 3 Argentina 2 Buenos Aires [Argentina] 2 Buenos Aires province 2 Cnidaria 2 Fungi 2 Genus hydra 2 Hydra 2 Hydra vulgaris 2 Hydrozoa 2 Invertebrata 2 Trophic ecology 2 algae 2 diet 2 feeding ecology 2 morphology 2 phytoplankton 2