Physiological Responses of Juvenile Bullfrogs (Aquarana catesbeiana) to Salinity Stress

文献类型： 外文期刊

第一作者： Zheng, Xiaoting

作者： Zheng, Xiaoting;Liang, Xueying;Chen, Qiuyu;Xie, Jingyi;Dong, Hongbiao;Zhang, Jiasong;Zheng, Xiaoting;Yang, Jinlong;Zhang, Jiasong;Dong, Hongbiao

作者机构：

关键词： bullfrog; salinity stress; survival rate; digestive enzyme; antioxidant enzyme

期刊名称：ANIMALS （ 影响因子：2.7； 五年影响因子：3.2 ）

ISSN： 2076-2615

年卷期： 2024 年 14 卷 23 期

页码：

收录情况： SCI

摘要： Bullfrogs (Aquarana catesbeiana) are increasingly farmed for their high nutritional value and adaptability to intensive aquaculture systems. However, salinity stress due to environmental changes and habitat salinization poses a significant challenge for both wild and farmed bullfrogs. This study examines the physiological responses of juvenile bullfrogs to varying salinity levels (0, 2, 4, 6 ppt) to better understand their capacity for osmoregulation and adaptation to salinization. Juvenile bullfrogs underwent salinity treatments for one week, and various physiological parameters, including digestive enzyme activity, antioxidant enzyme activity, and serum biochemical indicators, were measured. The study revealed that moderate salinity (2-4 ppt) enhanced pepsin and amylase activity while maintaining high survival rates. However, higher salinity levels (6 ppt) impaired antioxidant defense mechanisms and liver tissue, increasing oxidative stress markers such as malondialdehyde (MDA). The results suggest that bullfrogs possess a degree of salt tolerance, which may predict their resilience to future landscape salinization driven by environmental changes. This research provides valuable insights into the osmoregulatory mechanisms of amphibians under salinity stress, addressing a critical gap in knowledge essential for both conservation and aquaculture management.

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