Growth performance of cultivated spiny lobster (Panulirus homarus, linnaeus 1758) in tuban, east java, Indonesia

Spiny lobster is one of the potential and important economic fishery commodities. The demand for spiny lobster consumption continues to increase from year to year. Therefore, it is necessary to develop aquaculture efforts to fulfill the demand for lobster. The aim of this research is to observe the growth performance of cultivated spiny lobsters. The working method used in this study was data collection methods, consisting of primary data obtained from direct observations and secondary data obtained from interviews and literature study. The primary data included measurement of water quality, carapace length, Specific Growth Rate (SGR), absolute length growth, and Survival Rate (SR). Secondary data included spiny lobster aquaculture activity obtained from the literature and journal from the previous study. There are several technical activities of spiny lobster (Panulirus homarus) grow-out, which include pond preparation, fry supply, lobster stocking, feeding, measuring water quality, siphoning, and sampling to measure the growth of spiny lobster. The grow-out process of spiny lobster in this study is started from the average length of 10-20 cm, carapace length of 4.05, and weight size of 145.69 gram. The feed that given to the grow-out activity is trash fish and green clams. The parameters of growth measurement include total length, carapace length, and body weight. After reaching harvest size (one-month) of the rearing process, the value of SGR reached 0.15%, 0.5 cm in absolute length growth and 97% in survival rate.