Efek Waktu Radiasi Sinar Ultraviolet (UV) terhadap Morfologi Ikan Cupang (Betta splendens Regan) dan Gambaran Kariotipe

Abstract

The effects of ultraviolet radiation to morphology of Betta splendensRegan and karyotype description has been studied. The objectives of study are to determine the time length of exposure to ultraviolet radiation can cause mutagenesis on Betta splendens, to determine the phenotype changes, to determine find out the fertization and survival rate of larvae up to days 14 after exposure to ultraviolet radiation and to know the Betta splendens Regan karyotype. Researchis design according to Completely Randomized Design (RAL) with the treatments are untreated control (no radiation), radiation for 5 minutes, 10 minutes and 15 minutes by using light intensity of 30 watts and 254 nm wavelength. The results of the study showed the highest fertization rate is find in control with the number 100%, while the lowest fertilization rate is find in radiation for 15 minutes with the number 62,7%. The highest survival rate of larvae up to days 14 is find in control with the number 100%, while the lowest survival rate of larvae up to days 14 is find in radiation 15 minuteswith the number 39,2%. The colour performance of Betta splendensRegan body of this research are red , blue, light blue, blue and yellow combination albino. Fin color of Betta splendensRegan are red, red and white combination, bluish red, light blue, blue, and white. The shape off fin of Betta splendensRegan are halfmoon, butterfly, and beams. While Betta splendensRegan karyotype has not changed.