Herno Minjoyo, M.Sc is a senior researcher at the Research Center for Fishery, BRIN, with expertise in marine aquaculture. He holds a Master’s degree in Marine Biology from the University of the Philippines and a Bachelor's in Fish Cultivation from the Academy of Fisheries, Jakarta. Since 1985, he has led numerous national projects focused on the cultivation technologies of marine species, including red snapper, shrimp, pompano, and lobsters. He has authored over 30 scientific publications in accredited journals and continues to contribute significantly to aquaculture innovation in Indonesia.
Badan Riset dan Inovasi Nasional (National Research and Innovation Agency), Indonesia. Fish breeding and seed production techniques
Effect of stocking density on survival and growth of spiny lobster (Panulirus homarus) in cages at 7m depth1.
Spiny Lobster (Panulirus homarus) is one of the lobster species that has a high price in the local and international market and is economically valuable. The objective of this study is to know the effect of stocking density and growth of spiny lobster which is kept in cylinder cages (1 m in high and 1.15 m in diameter) at a depth of 7 m below sea level with average ambient temperature of 29 - 32oC. The study was completely randomized design, done for 3 months. The treatment divides into three groups and each have three replications. Treatment groups namely low stocking density (LSD): 10 lobsters/m² (10 lobsters/cage); medium stocking density (MSD): 15 lobsters/m² (15 lobsters/cage) and high stocking density (HSD): 20 lobsters/m² (20 lobsters/cage) where the initial average body weight is 75 g/lobster. The results showed that there was not significant in terms of survival rate between LSD (91.50 ±0.25 %) and MSD (93.30 ± 0.51 %) but both LSD and MSD were significant with HSD (86.05±0.45 %). The specific daily growth rate and feed conversion ratio between treatments were not significant. Total Hemocyte Count of hemolymph between LSD and MSD was not significant however both LSD and MSD were significantly lower than HSD. In terms of glucose hemolymph, LSD was significantly lower than HSD but not MSD.