The Effects of Water Flow on the Swimming Behavior of the Large Yellow Croaker (<i>Larimichthys crocea</i>) in a Large Sea Cage
This study aims to clarify the influence of water flow on the behavior of the large yellow croaker (<i>Larimichthys crocea</i>). Although <i>L. crocea</i> is a key species in marine cage aquaculture, and the industry is increasingly adopting large-scale sea cages, the behavio...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
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| Series: | Fishes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2410-3888/10/6/250 |
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| Summary: | This study aims to clarify the influence of water flow on the behavior of the large yellow croaker (<i>Larimichthys crocea</i>). Although <i>L. crocea</i> is a key species in marine cage aquaculture, and the industry is increasingly adopting large-scale sea cages, the behavioral adaptations of this species under such conditions remain insufficiently characterized. To solve this problem, the study implemented an ultrasonic biotelemetry system to monitor the in situ swimming behavior of <i>L. crocea</i> across varying current velocities and tidal phases. The results indicated that the tagged fish predominantly occupied water depths of 1 to 2.6 m, with no observable circular swimming behavior along the cage periphery. Additionally, the spatial distribution of <i>L. crocea</i> within the large-scale cage seemed to correlate with the direction of the current. Furthermore, both the frequency of appearance and swimming speed of <i>L. crocea</i> were higher in the center of the cage compared to the peripheral regions during flood and ebb tides, whereas the opposite trend was observed during slack water. This study provides novel insights into the behavioral ecology of <i>L. crocea</i> in large-scale aquaculture systems. |
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| ISSN: | 2410-3888 |