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Volume 9
Issue 12
10.3390/fishes9120474
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Article

Effects of Transport Stress (Duration and Density) on the Physiological Conditions of Marbled Rockfish (Sebastiscus marmoratus, Cuvier 1829) Juveniles and Water Quality

by
Jiahao Wang
1,2,
Kaida Xu
1,2,*,
Xinyi Chen
1,2,
Haoxue Wang
1,2 and
Zhe Li
1,2
1
Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China
2
Key Laboratory of Sustainable Utilization Research for Fishery Resources of Zhejiang Province, Zhoushan 316021, China
*
Author to whom correspondence should be addressed.
Fishes 2024, 9(12), 474; https://doi.org/10.3390/fishes9120474
Submission received: 2 November 2024 / Revised: 20 November 2024 / Accepted: 20 November 2024 / Published: 22 November 2024
(This article belongs to the Special Issue Biodiversity and Spatial Distribution of Fishes, Second Edition)
Versions Notes

Abstract

Live transportation is a critical component of fish farming and hatchery release. To optimize hatchery-release techniques and improve the survival rate of marbled rockfish (Sebastiscus marmoratus, Cuvier 1829) juveniles, the effects of varying transport durations (2, 4, 6, and 8 h) and densities (60, 90, 120, and 150 kg m−3) on the physiological indicators of the fish and water quality were investigated under controlled laboratory conditions. We found that as transport duration and density increased, water quality significantly deteriorated, with ammonia nitrogen levels rising and dissolved oxygen content and pH levels decreasing. Physiological indicators including levels of lactate, cortisol, and malondialdehyde and activities of superoxide dismutase, alkaline phosphatase, and glutamate oxaloacetate transaminase notably increased, indicating that the fish experienced heightened stress during transport. Additionally, the mortality rate of juveniles increased significantly with increasing density and transport duration. The high mortality rate might be associated with sustained elevated cortisol levels and liver damage. Our results are helpful for determining the optimal transport conditions for S. marmoratus juveniles and also provide valuable insights for improving transport techniques for other aquatic animal species.
Keywords: Sebastiscus marmoratus; live transportation; time duration; oscillation; mortality rate Sebastiscus marmoratus; live transportation; time duration; oscillation; mortality rate

Share and Cite

MDPI and ACS Style

Wang, J.; Xu, K.; Chen, X.; Wang, H.; Li, Z. Effects of Transport Stress (Duration and Density) on the Physiological Conditions of Marbled Rockfish (Sebastiscus marmoratus, Cuvier 1829) Juveniles and Water Quality. Fishes 2024, 9, 474. https://doi.org/10.3390/fishes9120474

AMA Style

Wang J, Xu K, Chen X, Wang H, Li Z. Effects of Transport Stress (Duration and Density) on the Physiological Conditions of Marbled Rockfish (Sebastiscus marmoratus, Cuvier 1829) Juveniles and Water Quality. Fishes. 2024; 9(12):474. https://doi.org/10.3390/fishes9120474

Chicago/Turabian Style

Wang, Jiahao, Kaida Xu, Xinyi Chen, Haoxue Wang, and Zhe Li. 2024. "Effects of Transport Stress (Duration and Density) on the Physiological Conditions of Marbled Rockfish (Sebastiscus marmoratus, Cuvier 1829) Juveniles and Water Quality" Fishes 9, no. 12: 474. https://doi.org/10.3390/fishes9120474

APA Style

Wang, J., Xu, K., Chen, X., Wang, H., & Li, Z. (2024). Effects of Transport Stress (Duration and Density) on the Physiological Conditions of Marbled Rockfish (Sebastiscus marmoratus, Cuvier 1829) Juveniles and Water Quality. Fishes, 9(12), 474. https://doi.org/10.3390/fishes9120474

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