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Effects of saline immersion on the physiological alterations of grass goldfish (Carassius auratus) during subsequent recovery in freshwater

文献类型： 外文期刊

作者： Wang, Xiaowen 1 ; Li, Huijuan 1 ; Zhang, Rong 1 ; Liu, Lili 1 ; Zhu, Hua 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Key Lab Fishery Biotechnol, Beijing 100068, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Fisheries Res Inst, Beijing 100068, Peoples R China

3.Natl Freshwater Fisheries Engn Technol Res Ctr, Beijing, Peoples R China

关键词： saline immersion; freshwater recovery; Na+; K+-ATPase; physiological response; grass goldfish (Carassius auratus)

期刊名称：FISH PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：2.9； 五年影响因子：3.1 ）

ISSN： 0920-1742

年卷期： 2023 年 49 卷 3 期

页码：

收录情况： SCI

摘要： The present work aims to evaluate the tolerance, osmoregulation, metabolism, and antioxidant ability of saline water immersed grass goldfish (Carassius auratus) during the recovery in freshwater. Grass goldfish (38.15 +/- 5.48g) acclimated in freshwater were immersed by salinities (0 parts per thousand, 20 parts per thousand and 30 parts per thousand) for different time durations (10, 20, 30 and 60 min); and the physiological responses were measured during freshwater recovery. The blood osmolalities were not significantly different at any group fish, while whereas the decline of Na+ concentration and the ratio of Na+/Cl- as well as the rise of Cl- concentration was observed in saline treated fish. Soon after freshwater recovery, the transcription of NKA-alpha and NKA-beta mRNA in gills of salinity 20 immersed fish elevated significantly and then decreased, whereas no obvious changes were detected in salinity 30 treated fish. Till 24h post freshwater recovery, gill Na+/K+-ATPase activities in saline treated fish were lower than control group except for the fish immersed by salinity 20 for 10-30 min. At 24h of recovery, cortisol levels in salinity 20 immersed fish were lower than salinity 30 treated fish, but remained higher than control. As for serum lactic acid, fish treated by salinity 20 for 10 or 20 min did not show any fluctuation. However, higher lactic acid contents were detected in all other five salinity treated groups during recovery. Generally, at 24 h of recovery, salinity 20 treated fish exhibited higher SOD and CAT activities than fish immersed by salinity 30. In summary, grass goldfish could survive by immersion in salinity 20 less than 60 min or salinity 30 less than 30min, even though immersion by salinity 20 could minimize the negative effects.

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