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Abstract
Study on the effect of feeds on metamorphosis time and survival rate of blue swimming crab larvae Portunus pelagicus (Linnaeus 1766) was conducted at Center for Research, Application and Technology Transfer of Fisheries, Faculty of Fisheries, University of Agriculture and Forestry, Hue University. The experiment was arranged with 3 treatments (NT), NT1: 50% Rotifers + 50% Flake industrial feed; NT 2: 50% Atemia larvae + 50% Flake industrial feed; NT3: 50% Rotifers + 50% Artemia larvae with 3 replicates in each treatment. Research results have shown that, using 50% Rotifers + 50% Artemia larvae (NT3), Blue swimming crab larvae had the shortest time to transition from Zoae 1 to fry crabs at 433 hours, while the remaining treatments had a total time of 444.17 (NT2) hours, and the longest transition time was in treatment (NT1) with a total time of 454.17 hours. The results of the study on survival rate also showed that Blue swimming crab larvae had the highest survival rate in treatment 3 (NT3) with the survival rate of 12.11%, the difference was statistically significant compared with the other treatments (p) <0.05).