ABSTRACT One hundred and eight juvenile Acanthopagrus latus were transported from their natural habitat and kept in tanks (300 L) with 20 ppt salinity for 14 days. After 24h starvation, the fish were exposed to salinity of 34, 12, and 5 ppt; then, blood samples were taken after 0, 2, 24, and 48h after the exposure. Blood electrolytes did not show significant changes in response to variation in the environmental salinities. Cortisol and ALP increased (not significantly) in all groups after 2h (P<0.05) and returned to the basal value within 24 h. Glucose and lactate levels increased significantly in all experimental groups after 2h (P<0.05) and returned to the basal value within 48 and 24h, respectively. Triglyceride did not show any significant change during the trial. Our findings showed juvenile A. latus could acclimate to a range of salinities from 5% to 35% within 48h. Also, the metabolic changes were more related to the time of sampling than the salinity challenge, suggesting that adaption occurred during the time of the study.

中文翻译：

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黄鳍鲷（Acanthopagrus latus）对急性盐度挑战的生理反应

摘要 将 108 只棘鱼幼鱼从它们的自然栖息地运出，并在 20 ppt 盐度的水箱（300 升）中保存 14 天。饥饿24小时后，鱼暴露于34、12和5 ppt的盐度；然后，在暴露后 0、2、24 和 48 小时后采集血样。血液电解质没有显示出响应环境盐度变化的显着变化。2h后所有组的皮质醇和ALP均增加（不显着）（P<0.05），并在24h内恢复到基础值。所有实验组的葡萄糖和乳酸水平在 2h 后显着增加（P<0.05），并分别在 48 和 24h 内恢复到基础值。试验期间甘油三酯没有显示出任何显着变化。我们的研究结果显示幼年 A. latus 可以在 48 小时内适应 5% 到 35% 的盐度范围。此外，与盐度挑战相比，代谢变化与采样时间的相关性更大，这表明在研究期间发生了适应。