Building adjustment capacity to cope with running water in cultured grass carp through flow stimulation conditions.
Sci Rep
; 14(1): 8618, 2024 04 14.
Article
in En
| MEDLINE
| ID: mdl-38616216
ABSTRACT
The adaptability of cultured fish to complex flow conditions is crucial for their survival after being released into the wild. Running water in natural environments poses significant challenges for the proliferation and release of cultured fish. This study aimed to investigate the effects of flow stimulation on the adjustment capacity of cultured fish to cope with running water. The target fish were cultured grass carp. An annular flume was used to conduct tests on training and control groups. The results demonstrated an enhancement in the adjustment capacity of cultured fish following appropriate flow stimulation training. (1) The trained fish exhibited a heightened preference for low-velocity areas. (2) The trained fish displayed the ability to select a route characterized by low energy consumption, predominantly following the periphery of the low-velocity area. This suggested that an appropriate flow velocity could improve the sensitivity of training fish to water flow information, and their adjustment capacity to cope with running water improved to a certain extent. A higher adjustment capacity allowed them to process flow rate information rapidly and identify a migration strategy with lower energy consumption. This study provides a useful reference for enhancing the survival rate of grass carp through stock enhancement initiatives and contributes to the sustainability of freshwater ecosystems.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carps
/
Ecosystem
Limits:
Animals
Language:
En
Journal:
Sci Rep
Year:
2024
Document type:
Article
Affiliation country:
China