Development and growth of female spinny lobster Panulirus homarus induced by laserpuncture with different time durations

Abstract

Spiny lobster (P. homarus) cultivation currently has good prospects due to its high economic value. However, there are obstacles to cultivating sand lobsters, such as the difficulty in providing seeds. The way that can be done to overcome this is by engineering lobsters reproduction. Laserpuncture is a method that can be used to engineer reproduction in sand lobsters by utilizing low wave helium-neon light which provides safe stimulation to accelerate the production of developmental and growth hormones in sand lobsters. Laserpuncture induction was carried out on the eye stalk and ventral part of the female sand lobster. This research used the completely randomized design experimental method with female sand lobster weighing 110 ± 5 g. This research was carried out using 4 treatments with 5 replications of each treatment. The treatments in this study were different durations of laserpuncture induction, including A (2 second induction), B (4 second induction), C (6 second induction), and K (no induction). The analysis in this study was carried out qualitatively and quantitatively which included parameters of absolute weight, absolute length, specific growth rate, length-weight relationship, gonad maturity level, and gonadosomatic index. The results showed that treatment A had the most significant effect compared to other treatments on all parameters, so that optimal laserpuncture induction on female sand lobsters could be applied for two seconds.

Keywords: development, growth, induction, laserpuncture, lobster