Free Content Electrical Threshold Responses of Pink Shrimp Penaeus duorarum, Burkenroad

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Threshold voltages needed to produce a hopping response in pink shrimp (Penaeus duorarum) were determined. Single capacitor discharge pulses, 50 to 500 microseconds long were used to stimulate shrimp in an aquarium. Threshold voltages were measured across a pair of field strength probes 5 cm apart. Voltages ranged from .06 to .39 for shrimp held parallel to the field. Shrimp required about twice as much voltage to respond when facing the negative electrode as when facing the positive electrode. Electrical threshold levels were affected by animal size, position relative to the direction of the electrical field, pulse width, and water temperature; but were not affected appreciably by salinity, or by long periods of activity.

Document Type: Research Article

Publication date: December 1, 1965

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