The comparative growth and survival of juvnile tropical oyster (Magallana bilineata, Roding, 1798) using different intensive nursery systems

作者：A.T.S. Hwai, Z. Yasin, N. Nilamani, Norhanis M. Razalli, N. Syahira, N. Ilias, Nur Aqilah Muhamad Darif, A. Jaya-Ram, Sau Pinn Woo, W.C. Poh, SeaHarvest Aquamarine (M) Sdn Bhd, 56, 1st Floor, Lebuh Bukit Kecil Satu, Taman Sri Nibong, 11900 Bayan Lepas, Penang, Malaysia · 发表于：International Journal of Environmental Research and Education · 年份：2023 · DOI：10.61186/injoere.3.2.69 · 研究领域：Marine Bivalve and Aquaculture Studies、Cephalopods and Marine Biology

The bottleneck of the oyster industry worldwide is imposed by the limitation in oyster seed supply and long culture cycles. In developing technology seed production for hatchery seed production to the commercial plant scale, the main challenge lies not only in getting the D-hinged larvae to the settling stage (eyed larvae) but also in growth and survival rates of the juvenile oysters to economically viable levels. Subsequently, efforts are concentrated on research designed at defining optimal conditions for growth and survival of the juvenile oysters cultured using different intensive rearing systems. The nursery systems used in this project are modified and refined technologies used by most hatcheries in the world. Attention is focused on developing oyster seeds or juvenile oysters with good growth and survival rate. Different systems of intensive nursery systems to obtain juveniles with regular shape and size were used. The systems applied in this project were the down-welling system, up-welling system, the rain-down system and the "coke-bottle" system. All these four systems produced cultchless spat, which grew into single oysters. The results of the survival of juveniles (from 1 week to 4 weeks) using different nursery systems showed that the best survival and highest growth rate was observed in the up-welling system (89.37.3%), followed by the rain-down system (76.54.1%) and coke-bottle system (72.212.0%). The down-welling system showed the lowest survival rate. This may...