Comparative analysis of the antennae of three amphipod species with different lifestyles.

Crustaceans detect chemical stimuli in the environment with aesthetasc sensilla, which are located on their 1 antennae. With the transition to other environments, chemoreception faces physical challenges. To provide a deeper understanding of the relation between the morphology of olfactory organs and different lifestyles, we studied the peripheral olfactory system of three amphipod species, the marine Gammarus salinus, the blind subterranean freshwater species Niphargus puteanus, and the terrestrial Cryptorchestia garbinii.