Growth of juveniles of (Striostrea prismatica G.) (Ostreida: Ostreidae) under two feeding regimes in a semi-closed circulation system

Abstract

Objective: The effect of two diets on the growth of juveniles of  Striostrea prismatica was studied.

Design/Methodology/Approach: The experiment consisted of tasting two diets, each with two replicates of 70 organisms. The experiments were carried out during 45 days in seawater recirculation systems. These two diets consisted of 1) 50% Chaetoceros muelleri B. and 50% Tetraselmis tetrathele, both grown in the laboratory, and 2) Shellfish Diet1800® pasta.

Results: The results did not show differences between both treatments. The organisms’ height of those fed with the pasta was 24.7±6.42mm, and that of those fed with the live food was 24.7±7.87mm.

Limitations on study/implications: Ignorance of the species' biology can limit our understanding of growth and its impact on the crop. Since the duration of the experiment, a more significant increase has been observed in the left valve, which may be due to the absence of currents or waves as occurs in natural conditions.

Conclusions: Therefore, it is concluded that using both diets is indistinct to cultivate S. prismatica juvenile in semi-closed systems.