Will Typhoon Cause Great Damage to Juvenile Hybrid Grouper (Epinephelus lanceolatus & MALE; x Epinephelus fuscoguttatus & FEMALE;) under Indoor Flowing Seawater Aquaculture Model?

文献类型： 外文期刊

第一作者： Hu, Jing

作者： Hu, Jing;Ma, Zhenhua;Hu, Jing;Ma, Zhenhua;Hu, Jing;Ma, Zhenhua;Hu, Jing;Ma, Zhenhua

作者机构：

关键词： Tropical cyclone; Salinity; Gill damage; Head kidneydamage; Serum users; Renal function metabolites

期刊名称：PAKISTAN JOURNAL OF ZOOLOGY （ 影响因子：0.6； 五年影响因子：0.7 ）

ISSN： 0030-9923

年卷期： 2023 年 55 卷 4 期

页码：

收录情况： SCI

摘要： Typhoons can hit the aquaculture industry. In this study, the water quality during typhoon was simulated under indoor water flowing seawater aquaculture model (C: salinity 32.5%, ammonia nitrogen 0.01mg/L; T1: salinity 30.0%, ammonia nitrogen 0.04mg/L, T2: salinity 27.5%, ammonia nitrogen 0.10mg/L; T3: salinity 25.0%, ammonia nitrogen 0.18mg/L) to investigate the tissue damage of gills and head kidneys and the changes of serum indicators of hybrid grouper (Epinephelus lanceolatus & MALE; x Epinephelus fuscoguttatus & FEMALE;) in 96 h. The results showed that the survival rate of each group was 100%, and no abnormal behavior was observed in juvenile fish. The damage performance in gill generally deepened over time. Lamellar fusion and curling of secondary lamellae also deepened from C group to T3 group. The proportion of interrenal tissue and hematopoietic tissue was moderate in all head kidney. Tissue vacuoles, ambiguous cell boundaries and necrotic cells deepened over time within 96h and also deepened from C group to T3 group. In all groups, triglyceride increased with time. In the treatment groups, the cholesterol was higher than that in C group at 6 h. The high-density lipoprotein cholesterol of C group remained stable at a higher level than the treatment groups. The low-density lipoprotein cholesterol of C group remained stable at a lower level than the treatment groups. The changes of serum ion concentration in hybrid grouper over time can be divided into three categories: change near the level of the C group (Na+, K+), roughly higher than the C group (Cl-, Fe3+, P5+) and roughly lower than the C group (Ca2+, Mg2+, Zn2+). The serum urea nitrogen showed an increasing trend, while serum creatinine and uric acid showed a decreasing trend. In conclusion, the simulated typhoon seawater can damage the gills and head kidney tissues of juvenile hybrid grouper, and obviously affect the serum indicators, but some indicators can be restored to normal by adaptation. From the perspective of this study, indoor flowing seawater system can be properly opened during typhoons, but attention should be paid to water quality monitoring and to observe whether juvenile hybrid grouper has abnormal behavior.

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