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Behavioral responses to different sensory stimuli in larval Grass Carp Ctenopharyngodon idella

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2024-09-26T00:00:00Z
Sensory input and systems are critical for organisms to respond to their environment, allowing movement to suitable habitat and potential escape from predators. While many stages of grass carp ontogeny have been described, neurosensory development remains unclear. Using behavioral tests, we looked at phonotaxis and chemotaxis from initial gas bladder inflation to the development of the second gas bladder chamber (the period during which larvae leave the drift and move into nursery areas). Rheotaxis was examined from hatch through gas bladder inflation by quantifying orientation in a laboratory flume.

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