Effects of stocking density on the productivity and nutrient removal of Agarophyton vermiculophyllum in Paralichthys olivaceus biofloc effluent

CULTIVATION OF THE SEAWEED <i>Ulva</i> spp. WITH EFFLUENT FROM A SHRIMP BIOFLOC REARING SYSTEM: DIFFERENT SPECIES AND STOCKING DENSITY

“…Overall, the results obtained in this work add to previous results showing the feasibility of using water from biofloc rearing units as a fertilizer for the culture of macroalgae, in general (Pedra et al, 2017;Shin et al, 2020), and Ulva, in particular (Ge et al, 2018).…”

“…This phenomenon of decreasing growth performance as algae stocking density increases is often observed in the literature For instance, there was a significant decrease in the growth rate of Gracilaria tikvahiae when its stocking density increased from 0.5 g L -1 to 10 g L -1 (Kim and Yarish, 2014). In another study, the algae Agarophyton vermiculophyllum exhibited a significant decrease in its specific growth rate when the stocking density increased from 0.2 g L -1 to 2 g L -1 (Shin et al, 2020). In the case of yield, no significant differences were observed.…”

Seaweed resources of Korea

“…However, biofloc medium has some challenges when growing seaweed, including its high turbidity and a high concentration of microbes in the medium. Shin et al (2020) found that A. vermiculophyllum grew very well and efficiently removed nutrients from the biofloc medium. Cultivating seaweed with shrimp together in a biofloc system also enhanced the growth of the shrimp and reduced cyanobacterial density (Brito et al 2014).…”

“…Although Korea is one of the more advanced countries in seaweed aquaculture, no commercial scale land-based seaweed aquaculture has been developed. Some research has focused on physiological studies and the selection of potential species for use in land based integrated multitrophic aquaculture and nutrient bioextraction systems (Chung et al 2002;Kang et al 2008Kang et al , 2013Kang et al , 2014Shin et al 2020). In the early 2000s, Chung and his colleagues at Busan National University first introduced the IMTA concept to Korea (Chung et al 2002).…”

“…Recently, Kim and his colleagues at Incheon National University and the National Institute of Fisheries Science cultivated a red seaweed, Agarophyton vermiculophyllum (formerly known as Gracilaria vermiculophylla) in biofloc effluent from flounder (Paralichthys olivaceus) (Figure 4; Shin et al 2020). This was one of a few studies of the growth of macroalgae in a biofloc effluent (Brito et al 2014(Brito et al , 2016.…”