Using residual water from a marine shrimp farming BFT system. Part II: Artemia franciscana biomass production fed microalgae grown in reused BFT water

Abstract

The residual water from intensive aquaculture production systems can be utilized in integrated multitrophic cultivations. In this work, Artemia franciscana received daily feedings of 10 mg L À1 of Tetraselmis chuii, Nannochloropsis oculata and Chaetoceros muelleri, which were grown using residual water from an intensive biofloc Litopenaeus vannamei cultivation system. The goal of this study was to verify which species provide the best zootechnical performance and best crustacean biomass production efficiency. After 12 days of cultivation, A. franciscana wet biomass was 815.64 AE 18.74, 650.81 AE 83.98 and 40.76 AE 4.08 mg L À1 with C. muelleri, T. chuii and N. oculata (P < 0.05), with significant differences in dried biomass as well. As for the microalgae cultivation in the alternative culture medium, T. chuii had higher dry biomass gain, requiring less culture volume to achieve 10 mg L À1 and become ready to feed Artemia. Thus, T. chuii was the most efficient in Artemia biomass production with 0.83 L compared to 1.54 L g art À1 in C. muelleri. C. muelleri is recommended for feeding A. franciscana for biomass production purposes. However, due to its better efficiency, T. chuii can be selected to be part of a multitrophic system.

Tolerance of Tetraselmis tetrathele to High Ammonium Nitrogen and Its Effect on Growth Rate, Carotenoid, and Fatty Acids Productivity

“…Tetraselmis tetrathele , which belong to the Chlorophyta phylum, is a green marine microalga widely used in aquaculture as feeds for marine lives, such as molluscs (Blanchard et al, 2008 ; Lu et al, 2017 ), crustacean larvae (Magnotti et al, 2016 ) and as a probiotic in fish (Grotkjær et al, 2016 ; Dittmann et al, 2020 ). The wide application of T. tetrathele could be attributed to the presence of numerous bioactive, biochemical compounds, such as polyunsaturated fatty acids (PUFA), polysaccharides, lipids, protein, enzymes and carotenoids in the microalgae cells (Tsai et al, 2016 ; Di Lena et al, 2019 ; Farahin et al, 2019 ; Schüler et al, 2020 ).…”

Diatomaceous earth application to improve shrimp aquaculture: growth performance and proximate composition of Penaeus vannamei juveniles reared in biofloc at two salinities

“…Siliceous compounds such as diatomite and zeolites have been extensively used to remove dissolved PO4 through adsorption and ion exchange (Xie et al, 2014). Also, the decrease in PO4 levels observed in the bioassay with biofloc in seawater may be related to the effect of diatomite on the growth of microalgae, which are effective in removing and recycling nitrogen and PO4 compounds P. vannamei cultures (Magnotti et al, 2016;Marinho et al, 2017). This is because microalgae are the second major group Figure 2.…”