LampreysPheromonesPetromyzonReceptors, PheromoneSex AttractantsHagfishesRiversFishesPhysiology, ComparativeMothsPheromones, HumanSwimmingSpinal CordVertebratesSexual Behavior, AnimalReticular FormationVomeronasal OrganReceptors, Mating FactorLocomotionMolecular Sequence DataPhylogenyPyrrolidonecarboxylic AcidChordata, NonvertebrateAmino Acid SequenceBiological Evolution