PH value is a key parameter in water, which has an important influence on the physiological activities of aquatic organisms. Water quality is one of the important factors affecting the survival and reproduction of aquatic animals. This study examined the effect of pH stress on mortality of Australian blue lobster. The pH value are recorded and measured when the death occurs during the different stages of breeding from young to adult Australian blue lobster. Thus, the optimum pH of each culture stage can be obtained, and the culture technology of lobster can be improved. This provides valuable information for understanding the importance of water pH to the survival of Australian blue lobster, and has certain guiding significance for aquaculture and ecological conservation.

Yongbo Li, Hailan Yang, Jie Zhan. A Study on the Effects of pH Variation on the Mortality Rate of the Australian Blue Lobster. Academic Journal of Agriculture & Life Sciences(2025), Vol. 6, Issue 1: 41-46. https://doi.org/10.25236/AJALS.2025.060106.

[1] Huang Z., Han S. “Disease Prevention and Control Techniques for Australian Freshwater Lobster.” Rural New Technology, 2022(07): pp. 39-40.

[2] Wang Z. “Australian Freshwater Lobster.” Hunan Agriculture, 2019(11): p. 27.

[3] Hong P. “Aquaculture Techniques for Australian Freshwater Lobster.” Agricultural Technology and Equipment, 2022(12): pp. 133-135.

[4] Yuan Y. “Biological Characteristics and Artificial Breeding Techniques of Australian Freshwater Lobster.” Henan Aquaculture, 2017(04): pp. 6-8.

[5] Li M. et al. “Trial of Healthy Aquaculture of Australian Freshwater Lobster.” Aquaculture and Feed, 2019(10): pp. 56-57.

[6] Lin B. & Fang L. “Study on Common Water Quality Problems in Aquaculture.” Jiangxi Aquaculture Science and Technology, 2020(06): pp. 32-33.

[7] Tao Y., Qiang J., Wang H., et al. “Effects of Low pH Stress on the Gill and Hepatopancreas Enzyme Activities and Tissue Structure of Procambarus clarkii.” Chinese Journal of Fisheries Science, 2016, 23(06): pp. 1279-1289.

[8] Wang Q., Wang J., Chen H., et al. “Histopathology of Procambarus clarkii under Chronic Zinc Sulfate Stress.” Chinese Journal of Fisheries Science, 2012, 19(01): pp. 126-137.

[9] Zhao H., Zhang Y., Huang L., et al. “The Immune System and Immune Prevention in Crustaceans.” Chinese Veterinary Journal, 2003(01): pp. 41-44.

[10] Wang M. & Meng L. “Progress in the Research on Australian Freshwater Lobster Aquaculture.” Aquaculture, 2021, 42(06): pp. 35-38.

[11] Chen W. & Jin S. “Selection and Temporary Rearing of High-Quality Postlarvae of Blue-Cheeked Shrimp in Shanghai.” Shanghai Agricultural Science and Technology, 2016(05): pp. 62-63.

[12] Zheng G., Liang S., Qin Z., et al. “Aquaculture Techniques for Redclaw Crayfish.” Agricultural Engineering Technology, 2023, 43(34): pp. 112-114.

[13] Budong M. “Causes and Prevention of Water Pollution in Aquaculture.” China Science and Technology Information, 2020(11): pp. 60-61.

[14] Ren M., Wei S., He L., et al. “Effects of Four Different Feed Formulations on the Growth, Survival, and Body Color of Redclaw Crayfish.” Journal of Hainan Tropical Ocean University, 2020, 27(05): pp. 11-16+68.

[15] Zhou H. “Effects of Water Quality and Feed on the Respiratory Metabolism of Philippine Clams.” Dalian Ocean University, 2024.

[16] Qiu J. “Study on the Effects of Seawater pH Changes on the Photosynthetic Physiology and Feed Value of Typical Diatoms.” Jiangsu Ocean University, 2022.

[17] Zhang X., Xie R., Zhang H. “Effects of Salinity on the Growth, Antioxidant Enzyme Activity, Oxygen Consumption, and Ammonia Excretion Rates in Tiger Puffer.” Contemporary Fisheries, 2023, 48(11): pp. 73-76.

[18] Gu N. “Effects of Ammonia Nitrogen Stress on the Growth, Physiological Indicators, Gill and Hepatopancreas Microstructure, and Related Gene Expression of Fenneropenaeus chinensis.” Shanghai Ocean University, 2021.

[19] Wu L., Li J., Zhou W., et al. “Effects of Short-Term Ammonia Nitrogen Stress and Recovery on Procambarus clarkii.” Aquatic Sciences: pp. 1-14 [2024-04-10].

[20] Cui G. “Stress Responses of Eriocheir sinensis to pH and Ammonia, and the Mitigative Effects of Dietary Phospholipids and Astaxanthin.” Soochow University, 2021.

[21] Yu T., et al. “Effects of pH Stress on the Antioxidant Enzyme Activity of Penaeus vannamei.” Marine Science, 2015, 39(05): pp. 47-53.

[22] Zhang Y., Niu Y., Li Z., et al. “Why Should Aquaculture Pay Attention to ‘C/N’?” Contemporary Fisheries, 2024, 49(01): pp. 81+83.