Masculinization of guppies (Poecilia reticulata) using water of coconut hybrid variety with the immersion method of pregnant female

Abstract

This encourages monosex male guppies cultivation which can be done through sex reversal techniques, namely masculinization by adding safer natural ingredients. The purpose of this study was to determine the effect of immersion of pregnant guppies fish using water of coconut hybrid on the percentage of male larvae and determine the dose of coconut water and the duration of immersion. The research method used was the experimental method with Factorial Completely Randomized Design continued with DMRT. The results of immersion of pregnant guppies fish in a solution of water coconut hybrid with different dosages and the duration of immersion had a significant effect (P <0.05) on the percentage of male larvae. The dosage of 15 ml coconut water for 10 hours produced 66.90% male guppies fish larvae. Supporting parameters showed results at a dose of 15 ml with the duration immersion of 10 hours obtained survival of 100%. Water quality during immersion and maintenance of larvae, namely temperatures of 26-28 oC, pH 6.6-8.0 and DO 6.4-6.8 mg/L.