Accession Number : AD0674870

Title :   ANALYSIS OF SOUND SPECTRA IN YELLOWSTONE LAKE IN RELATION TO ORIENTATION AND HOMING MOVEMENTS OF CUTTHROAT TROUT (SALMO CLARKI).

Descriptive Note : Final rept.,

Corporate Author : MONTANA STATE UNIV BOZEMAN DEPT OF ZOOLOGY AND ENTOMOLOGY

Personal Author(s) : Brown,C. J. D. ; Stober,Q. J.

Report Date : 30 AUG 1968

Pagination or Media Count : 33

Abstract : Orientation and homing studies on the cutthroat trout (Salmo clarki) in Yellowstone Lake have been carried out with emphasis on olfaction and vision. Homing could not be explained in terms of visual and olfactory mechanisms alone. Since fishes perceive low level acoustic noise by means of the acoustico-lateralis system, it was hypothesized that cutthroat trout might cue to the acoustic spectrum produced by streams. The present study had as its objectives to determine if characteristic ambient acoustic-pressure spectrum levels occur in the area of spawning tributaries, to record and analyze cutthroat trout sounds and to determine an audiogram for this fish. (Author)

Descriptors :   (*ACOUSTIC SIGNALS, FISHES), (*UNDERWATER SOUND, SOUND TRANSMISSION), ACOUSTIC PROPERTIES, AUDITORY PERCEPTION, LAKES, SHALLOW WATER, FLOW FIELDS, TEST METHODS, TEST EQUIPMENT, FREQUENCY

Subject Categories : Anatomy and Physiology
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE