Analysis of the Main Factors Inducing Mortality in Artificial Ponds for Australian Freshwater Lobsters

With rising demand for Cherax quadricarinatus due to advancing aquaculture technology and consumer preference, this imported species faces strict environmental needs and technical challenges. Poor water quality and temperature extremes during breeding often cause mortality and yield losses, impacting farmers economically. This study analyzes primary mortality causes in artificial ponds through breeding experiments, collecting data on temperature, dissolved oxygen, ammonia nitrogen, nitrate nitrogen, and Vibrio infection. Key factors identified include temperatures ≤10°C or ≥31°C, dissolved oxygen ≤1.0 mg/L, and ammonia nitrogen or nitrate nitrogen ≥0.5 mg/L. These findings enhance understanding of artificial pond conditions affecting C. quadricarinatus, offering a reference for improving aquaculture practices.