Embriogenesis dan Perkembangan Larva Ikan Mas (Cyprinus carpio) Strain Cangkringan

JOSEP SIREGAR, Susilo Budi Priyono, S.Pi., M.Si.

2014 | Skripsi | BUDIDAYA PERIKANAN

Tujuan penelitian ini adalah mengetahui karakteristik reproduksi induk, embriogenesis, perkembangan morfologi larva, tingkat kelulushidupan dan bukaan mulut larva serta pertumbuhan panjang dan berat larva. Karakteristik reproduksi meliputi fekunditas, diameter telur sebelum dan setelah dibuahi serta derajat pembuahan dan penetasan. Perkembangan embrio diamati dengan mikroskop dengan perbesaran 40x dan dianalisis secara deskriptif. Karakteristik reproduksi menunjukkan fekunditas 34.886+11.652 butir/kg, diameter telur sebelum dan setelah dibuahi 1,28+0,12 mm dan 1,66+0,08 mm, derajat pembuahan 66+9%, derajat penetasan 96+3%. Tahap perkembangan embrio menunjukkan stadia cleavage terjadi 35 menit, stadia blastula terjadi 5 jam 4 menit, stadia gastrula terjadi 6 jam 47 menit dan stadia organogenesis terjadi 8 jam 1 menit. Penetasan terjadi 44 jam 30 menit dan kuning telur habis 60 jam setelah penetasan. Tingkat kelulushidupan larva sebesar 86+14% dan bukaan mulut sebesar 0,70+0,19 mm. Panjang larva setelah menetas 4,94 mm, sedangkan pada umur 60 jam 6,88 mm. Berat larva setelah menetas 1,53 mg, sedangkan pada umur 60 jam 2,01 mg.

The aim of this research was to observe broodstock reproductive characteristic, embryogenesis, morphology development, survival rate and mouth width of larva also the growth of larva based on the length and weight. Reproductive characteristic consist of fecundity, diameter of egg before and after fertilization, fertilization rate and hatching rate. Embryo development was observed by microscop with 40x magnification. The research method used a descriptive analysis. Reproductive characteristic showed that fecundity was 34.886+11.652 eggs/kg, the diameter of egg before and after fertilization were 1,28+0,12 mm and 1,66+0,08 mm, the fertilization rate was 66+9% and hatching rate was 96+3%. Embryo development showed that cleavage stadia occured in thirtyfive minutes, blastula stadia occured in five hours and four minutes, gastrula stadia occured in six hours fourty-seven minutes, organogenesis stadia occured in eight hours and one minute. Incubation period was about fourty-four hours and egg yolk out in sixty hours after hatched. Survival rate of larva was 86+14% and the mouth width was 0,70+0,19 mm. The length of larva after hatched was 4,94 mm, whereas after sixty hours was 6,88 mm. The weight of larva after hatched was 1,53 mg, whereas after sixty hours was 2,01 mg.

Kata Kunci : Strain Cangkringan, ikan mas, larva, telur