Sublethal effects of ultraviolet radiation on crab larvae of Cyrtograpsus altimanus

► Exposure to UVR impaired molting from Zoea I to Zoea II of Cyrtograpsus altimanus. ► Sublethal exposure to UVR affected the behavior (higher swimming speed) of larvae. ► Hatching of this species occurs during summer, so UVR may affect population dynamics.