THE EFFECT OF IMMERSION LENGTH IN PAPAYA LEAF SOLUTION (CARICA PAPAYA L.) TOWARD FERTILIZATION AND HATCHING OF IRIDESCENT SHARKS (PANGASIANODON HYPOPHTHALMUS S.)

Abstract

Iridescent sharks is one kind of freshwater fish that is quite economical. However, the availability of the fish eggs is rather problematic due to the hatcheries, i.e. the adhesive nature of the eggs. Papaya leaves contain papain enzymes that can reduce the adhesive nature of eggs. The purpose of this study was to determine the effect of papaya leaf solution with different immersion period on the successful hatching of the iridescent sharks (P. hypophthalmus). This study was conducted experimentally using a complete randomized design. There were five treatments, i.e. (K) 0 seconds, (A) 30 seconds, (B) 60 seconds, (C) 90 seconds, (D) 120 seconds, and (E) 150 seconds with three-time repetition. The result of this study shows that the best hatching (80.31%) happens to the eggs immersed in papaya leaf solution for 60 seconds (treatment B).

Keywords

• Carica papaya
• leaves
• hatching
• egss
• Pangasianodon hypophthalmus