Experimentally Demonstrated Echolocation in the Amazon River Porpoise, Inia Geoffrensis (Blainville)
Research and development rept. Apr-Dec 1969
NAVAL UNDERSEA RESEARCH AND DEVELOPMENT CENTER SAN DIEGO CA
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Echolocation and related behavior in the Amazon River porpoise Inia geoffrensis was investigated to demonstrate biological sonar within the context of operant conditioning. It was found that the Inias click train ranged from 25 to 200 kHz major energy was centered approximately at 100 kHz. The longest periods of silence for the Inia were 8 sec. Corollary behavior exhibited during the performance of the conditioned task indicated a two-step sonic appraisal of the stimulus condition.
- Anatomy and Physiology
- Acoustic Detection and Detectors