Influence of Salinity Gradient on Shell Thickness and Growth Rate in Estuarine Oyster Farming

Abstract

Salinity is a critical environmental factor influencing physiological processes, shell formation, and growth performance in estuarine oyster farming systems. This study investigates the influence of salinity gradient on shell thickness and growth rate in estuarine oysters to identify optimal salinity conditions for sustainable aquaculture production. The proposed methodology involves controlled field and laboratory experiments across different salinity levels representative of estuarine environments. Key parameters, including shell thickness, growth rate, survival percentage, filtration activity, and physiological responses, are measured using standard aquaculture and biomineralization assessment techniques. Water quality parameters such as salinity, temperature, pH, and dissolved oxygen are continuously monitored. The collected data are preprocessed through cleaning, normalization, and statistical validation to ensure consistency and reliability. Advanced analytical and machine learning models, including regression analysis, Random Forest, and Artificial Neural Networks, are employed to evaluate the relationship between salinity gradients and oyster growth dynamics. Experimental results indicate that moderate salinity levels promote optimal shell thickness and growth rate by supporting efficient calcium carbonate deposition and metabolic activity. In contrast, extreme low or high salinity conditions negatively affect shell formation, reduce growth rates, and increase physiological stress. The study identifies an optimal salinity range that maximizes growth performance and shell integrity. The findings highlight the importance of maintaining stable salinity conditions in estuarine aquaculture systems. The study concludes that precise salinity management, supported by data-driven analysis, provides a sustainable and efficient approach for enhancing oyster growth, improving shell quality, and ensuring long-term aquaculture productivity.