Abstract

EGGS EFFECTIVENESS LEAVES EXTRACT PIPER BETLE TO ATTACK PREVENTION FUNGUS SAPROLIGNIA SP IN OSTEOCHILUS HASSELTI

*Kasprijo, Nuni Aisah Dan and Rudi Wijaya

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Abstract

Betle leaf (Piper betle) is one of the traditional native plant to Indonesia that known to contain antifungal substances. The betle leaves contained essential oils, tannins, phenoids, saponnis that able to inhibit the growth of fungi. This study aims to determine the optimal extract concentration of betle leaf on egg hatchability and survival of nilem larvae. This study used an experimental method with a completely randomized design consisting of 5 preparations and 3 replications. The treatment given is soaking nilem fish eggs for 20 minutes into the media with betle leaf extract contents namely P1: 0 ppm (control), P2: 20 ppm, P3: 40 ppm, P4: 60 ppm, and P5: 80 ppm. Test parameters that observed including egg hatchability, larval survival, prevalence of fungal infection and water quality. The results of egg immersion in betle leaf extract at a concentration of 80 ppm (P4) showed the best results with 95 ±3,36% hetching rate off eggs. The prevalence of fungal infection on P5 was 3.67 ± 2.46%, and the larval spreading on P4 was 87.34 ± 3.17%. Water quality in the study showed a pH value of 7, temperatures between 21 - 23oC, and dissolved oxygen of 6.06 - 7 mg / L.

Keywords: Osteochilus hasselti egg, Betle Leaf Extract, prevalence fungus Hatching Rate, Intensity of Fungal Infection.