Nursery of sand lobster, Panulirus homarus (Linnaeus 1758) in rearing tanks with some shelter combinations

National Research and Innovation Agency

^* Corresponding author: bedjoselamet@yahoo.co.id

Abstract

The addition of the right combination of shelters to lobster farming can reduce cannibalism and increase survival rates. This study aims to find a suitable shelter combination for Scalloped spiny lobster reared in a fiberglass tank. The study was conducted in 12 fiberglass tanks 1 m³ in volume, with an initial lobster puerulus weight of 0.26 ± 0.024 g and a density of 100 /tanks. The combination of shelters tested is roster brick (A); shading net (B); roster brick and seaweed Gracillaria sp. (C); and shading net and seaweed (D). The parameters observed were survival rate, body length, body weight and hemocytes. Results showed that the best survival rate at treatment C (36.3 ± 10.54%), followed by A (33.3 ± 5.77%), D (25.0 ± 5.57), and lowest at B (14,3 ± 4,04%) (P<0.05). The final body weight and total length did not significantly different (p>0.05). The highest total hemocytes at treatment C (616.5±67.254 cell/ml), followed by A (583.4± 59.434 cell/ml), D (572.6±56.324 cell/ml), and lowest at B (459.6±45.344 cell/ml). The shelter combination of roster brick and seaweed (Gracillaria sp.) is better than another treatment because it can produce a better survival rate.