PENGARUH SALINITAS TERHADAP PERKEMBANGAN PARASIT PADA BENIH GURAMI, Osphronemus goramy = THE EFFECT OF SALINITY ON DECREASING PARASITES ON GOURAMY, Osphronemus goramy

Abstract

Research was conducted to determine the effect of salinity on the reduction of parasites in Gouramy (Osphronemus goramy). The Research was performed using completely Randomized design with 5 salinity treatments (water pond, water with salt concentration 0, 2, 4 dan 6 g/I) with 4 replications. The 5-7 cm of gouramy fingerling were reared as on treatments and the parasites were counted using skin scrapping dan wet mount methods. Observation was performed every 3 day for 15 days on parasite intensity, prevalence, mortality, symptoms and water quality. . . The result showed that several parasites including Trichodina sp., Apiosoma sp., Ichthyophthirius sp., Oodinium sp., dan Henneguya sp were observed. The highest intensity and prevalence were found in Trichodina sp. The salinity and length of administration were significantly decrease number parasites. Salinity treatments (2, 4 dan 6 g/I) for 3 days could totally remove Trichodinasp. from fishes. Meanwhile the data of other parasite species were insignificant due to the low level of its intensity and prevalence. Salinity. administration at level 6 g/l could reduce mortality