Effect of betel leaf extract (Piper Betle L.) toward hatching and survival rate of sea bass (Lates calcarifer) larvae

Abstract

One of the factors that causes the hatchability of sea bass (Lates calcarifer) eggs to be low is fungal attack. One natural ingredient that can prevent fungal attacks on fish eggs is betel leaves (Piper betle L.) because they have antifungal compounds. The aim of this research was to determine the effect of giving betel leaf extract on the hatchability of eggs and the survival of sea bass larvae. This research was carried out from 21 February to 3 March 2024 at the Ujung Batee Brackish Water Aquaculture Fisheries Center. The method used in this research was a Complete Random Design (CRD) with 5 treatment levels and 4 replications. The concentrations of betle leaf extract used included treatment A (control), treatment B (1.40 ml/L), treatment C (1.50 ml/L), treatment D (1.60 ml/L) and treatment E (1.70 ml/L). Based on the ANOVA test that has been carried out, it can be concluded that the addition of betel leaf extract has a significant effect on the hatchability of sea bass eggs and the survival of sea bass larvae. Treatment C (1.50 ml/L) was the best treatment in this study, which resulted in a hatchability percentage of 89.50%, with a survival rate of 84.50%.