Application of a dynamic energy budget model to the blood clam, Tegillarca granosa, reared in culture pond

Abstract

Dynamic Energy Budget (DEB) theory seeks to quantify the energetic framework of individual organisms through a dynamic model that encompasses food uptake and its subsequent utilization in metabolic processes. This paper aims to extend the existing DEB model for Tegillarca granosa in pond culture. The model is influenced by water temperature and food density, which serve as key forcing variables throughout larval development. We calculated DEB parameter values for larvae through laboratory experiments specifically designed to gather datasets on ingestion and growth under varying phytoplankton densities and temperatures. Sensitivity analysis indicated that Arrhenius temperature (T_A) exerted the most significant impact on growth, with a 10 % increase in T_A resulting in an 11.6 % increase in dry tissue weight. Insufficient energy allocated to storage during January and February hindered the growth of T. granosa, leading to reduced dry tissue weight, structural damage, and decreased survival rates during winter. This study provides theoretical insights into assessing the carrying capacity and implementing scientifically informed aquaculture management practices for T. granosa in pond systems.