The Effect of Different Diet of Phytoplankton Cells on Growth Performance of Copepod, Oithona sp. in Semi-mass Culture

The effect of different diet of phytoplankton Cells on the growth performance of copepod, Oithona sp.in semi mass culture was examined in this research. This research used Chaetoceros calcitrans., Chlorella vulgaris., Nannochloropsis oculata and Isochrysis galbana as diet to known the Oithona sp. growth performance. This research was designed by using Completely Randomized Design (CRD) with four treatments and three replicates. Those treatments were A. the culture was added with Chaetoceros calcitrans cells diet, B. with Chlorella vulgaris.cells diet, C. with Nannochloropsis oculata. cells diet, and D. with Isochrysis galbana. cells diet, respectively. The results showed that the different diet of phytoplankton cells were highly significantly difference (P < 0,01) on Oithona sp. growth performance. The diet of Chaetoceros calcitrans cell gave the best performance of Oithona sp. growth, where reached (6.963 ± 0.38) ind · mL^–1 of total density, (0.121 ± 0.003) ind · d^–1 of specific growth rate, and eggs production of (16.50 ± 2.74) eggs · ind^–1.