A PROPOSED DUAL ROLE OF ODOR IN FORAGING BY THE CALIFORNIA SPINY LOBSTER,PANULIRUS INTERRUPTUS(RANDALL)

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Abstract
The role of odor in foraging by the lobster Panulirus interruptus is analyzed in laboratory and trapping experiments. Bait detection thresholds are defined as thresholds for initiation of the major elements of food search behavior. Locomotion was limited to higher bait concentrations. Concentrations in immediate trap environment were estimated to be nearly at laboratory-determined detection thresholds. It is proposed that low stimulant concentrations act to modify behavior of animals already aroused.