All environments are noisy and require some form of filtering to detect important signals.
Chemical signals are transported by turbulent currents, viscous flow, and molecular diffusion. Receptor cells extract chemical signals from the environment through various filtering processes. In our laboratory fish, marine snails, and crustacea have been investigated for their ability to use chemical signals under water. Currently, we use the lobster and its exquisite chemical and mechanical senses as our major model to study the signal-filtering capabilities of the whole animal, narrowly tuned chemoreceptor cells, and its flow detection receptor system. Research in our laboratory focuses on amino acids, which represent important food signals for the lobster, and on the function and chemistry of pheromones used in lobster courtship.