DOI: 10.2478/cjf-2024-0004
Original scientific paper
RELATIONSHIP BETWEEN ABUNDANCE OF Clamydomonas spp AND Chlorella spp ON CLINICAL PERFORMANCE OF RED TILAPIA (Oreochromis niloticus) IN SILVOFISHERY PONDS
2024, 82 (1) p. 33-42
Linayati Linayati, Nguyen Nhi, Heri Ariadi, Tri Mardiana, Ashari Fahrurrozi, Mohammad Syakirin
Abstract
Chlamydomonas spp and Chlorella spp are plankton genera that can be used to determine the level of balance in the aquatic environment. The purpose of this study was to determine the plankton abundance of Chlamydomonas spp and Chlorella spp and its relation to the clinical performance of red tilapia cultivated in silvofishery ponds. The research method used is an ex-pose facto-causal design with random sampling. The results showed that the water quality conditions in the silvofishery ponds were very good except for the Nitrate parameters of 0.00-1.50 mg/L and Salinity of 2-11 gr/L which exceeded the quality standards. In the silvofishery ponds, 5 plankton classes were found, namely Chlorophyceae, Cyanophyceae, Chrysophyceae, Protozoa, and Dinophysis, consisting of 15 genera. The most dominant class of Chlorophyceae with an abundance of 2.88E+06 cells/ml. The Chlorophyceae class is dominated by Chlorella spp. (2.63E+06 cell/ml) and Chlamydomonas spp. (2.20E+05 cells/ml). The abundance of Chlamydomonas spp. in silvofishery ponds is closely related to phosphate solubility (0.988). Based on observations of clinical symptoms in the eyes, gills, and fins of fish, no disease infections or physical abnormalities were found in fish cultured in silvofishery ponds. Fish tend to live well with a growth rate of 0.44 gr/day. The aquatic ecosystem of the silvofishery pond which is dominated by the plankton Chlorella spp. and Chlamydomonas spp had a good effect on the performance and condition of the fish being cultivated. This study concludes that the abundance of Chlamydomonas spp and Chlorella spp was found to be very dominant compared to other plankton genera. The presence of Chlamydomonas spp and Chlorella spp illustrates good and stable environmental conditions in silvofishery ponds followed by no clinical signs of disease infection in fish reared during the study period..
Keywords
Chlorophyceae, silvofishery, Oreochromis niloticus, plankton, dinophysis