Evaluation of Growth and Survival of Artemia franciscana fed with Nannochloropsis oculata and Chlorella capsulata
Artemia franciscana was fed for seven days with 11.7, 23.4 and 46.8 mg l-1. d-1 (ash-free dry weight) of Nannochloropsis oculata and Chlorella capsulata, to evaluate the food value of these two microalgae. Survival was similar, close to or greater than 90% in all cases, but there were significant differences in growth beginning on the third day. The final ash-free dry weight of A. franciscana fed with N. oculata was seven times greater than with C. capsulata and the respective developmental stages were between instar 14 and 16 and from 8 to 9. Food ingestion was similar with the two diets, but the mean gross growth efficiencies were 80% with N. oculata and 7% with C. capsulata, indicating a poor assimilation of C. capsulata. Therefore, C. capsulata cannot be considered as a suitable diet for A. franciscana, because the amount of energy obtained is not sufficient to sustain normal growth.
International Journal of Life Sciences 10 (1) : 2016; 35-39