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Recording the Motor Activity of Aquatic Animals by Ultrasound
Author(s) -
Rosenfeld Eike,
Millner Rudolph,
Grosse WolfRödiger,
Schuh Joseph
Publication year - 1985
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19850700218
Subject(s) - motor activity , doppler effect , carassius auratus , fishery , ultrasonic sensor , ultrasound , circadian rhythm , biology , environmental science , acoustics , zoology , fish <actinopterygii> , neuroscience , physics , endocrinology , astronomy
An ultrasonic technique based on the Doppler effect is presented to allow the registration of aquatic animal movements. The method was tested on crucians (Carassius carassius) in an aquarium as part of chronobiological investigations. Comparison with light barrier measurements shows that the Doppler technique is suitable for detecting typical circadian and seasonal changes in the motor activity of the fishes. The features of the ultrasonic method are discussed.