LAUSR

Abstract To examine the effects of stocking density on growth, food intake, and expression levels of related genes of Haliotis discus hannai Ino in recirculating aquaculture systems, abalones (shell length: 38.42 ± 2.31 mm, weight: 7.04 ± 0.89 g) were cultured at three different stocking densities (high [1500/m 2 ], medium [1000/m 2 ], and low [600/m 2 ], 4 replicates each) for 90 d. At the end of the experiment, the survival rate and specific growth rate of weight of abalones in the high-density group were 86.5% and 0.14 mg d − 1 , respectively, which were significantly lower than those in the low- and medium-density groups ( P P P P P P Hdaly and Hdamyl in the low-density group had increased and were significantly higher than those in the medium- and high-density groups ( P Hdlam in the high-density group was significantly lower than that in the medium-density group ( P Hdcel in the medium-density group was significantly lower than that in the low-density group ( P P