Effect of stocking density on the growth and survival of anomalocardia brasiliana (Gmelin, 1791) (bivalvia: Veneridae) post-larvae

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Abstract

Anomalocardia brasiliana post-larvae were cultured for 28 days to evaluate the effect of stocking density on their growth and survival rate. Three stocking densities were tested 40, 80 and 160 post-larvae cm-2, in experimental units (2-L) with static cultivation system and total water renewal at each 48 hours. The experimental design was completely randomized with three treatments and three repetitions each. Stocking density of 40 post-larvae cm-2 reached 1 mm length within 24 days, while only 18% of the post-larvae at density of 80 postlarvae cm-2 reached 1 mm length in the same time. The density of 40 post-larvae cm-2 had the highest specific growth rate, 4.98±0.08% day-1. The survival rates of post-larvae at lower densities were significantly higher (53.24±4.60% and 52.95±3.32%, on 40 and 80 post-larvae cm-2, respectively) compared to higher stocking density (31.54±0.70%). In the cultivation of A. brasiliana post-larvae, stocking density must be managed during growth. The density of 160 post-larvae cm-2 can only be used until the post-larvae reach 600μm in length, then they should be at 40 post-larvae cm-2 density to keep the maximum daily growth rate.

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De Oliveira, I. B., Lavander, H. D., De Lima, P. C. M., De Oliveira, C. Y. B., Dantas, D. M. D. M., & Gálvez, A. O. (2019). Effect of stocking density on the growth and survival of anomalocardia brasiliana (Gmelin, 1791) (bivalvia: Veneridae) post-larvae. Ciencia Rural, 49(12). https://doi.org/10.1590/0103-8478cr20190420

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