INFLUENCE OF LONG TIME IMMERSION BETTA FISH LARVAE ON THE PERCENTAGE OF SEXUAL DIFFERENCE

Abstract

Sex Reversal is one way to produce male monosex fish populations, a technology that is applied when the fish gonads have not differentiated so that the genitals are male. Honey is one of the ingredients used for sex reversal containing chrysin which functions as an aromatase inhibitor so that it directs the sex of the fish to become male. This research was conducted from May 30 to July 13, 2019, where the research was Wet Laboratory Aquaculture Study Program, Faculty of Agriculture, University of Mataram. The method used in this study was Completely Randomized Design (CRD) consisting of 4 treatments 3 replications, namely P1 honey concentration 5 ml.l^-1 + 8 hours immersion, P2 honey concentration 5 ml.l^-1 + 10 hours immersion , P3 honey concentration 5 ml.l^-1 + 12 hours immersion, P1 honey concentration 5 ml.l^-1 + 14 hours immersion. The data obtained were analyzed using ANOVA at 95% confidence level through the SPSS program and further tests using Duncan to find out the best treatment. The parameters observed were the percentage of the number of males and the survival rate. The results showed that the effect of differences in length of time gave significantly different results for the percentage of males produced but did not affect the survival rate of betta fish that were maintained. The best immersion time was obtained from P2 treatment with the percentage of males as much as 77.18%.

Keywords: masculinitation, survival rate, sex reversal, Betta sp., honey.