Chemoreception in Aquatic Invertebrates

Synopsis Aquatic invertebrates are represented by an impressive number and variety of species that have evolved over the last 550 million years and that live in diverse habitats. Consequently, their chemical senses take many forms, even though built on similar basic principles and serving the same basic needs. This chapter summarizes what is known about chemical sensing in aquatic invertebrates, including information on the structure and function of the chemosensory systems of some of the major clades and key transitional forms, and a discussion of principles of organization that unify them.