Ảnh hưởng của mật độ copepoda (Cyclops vicinus) lên sự phát triển Artemia franciscana ở các độ mặn khác nhau

Abstract

This study was performed to evaluate the influence of copepod densities on the survival and growth of Artemia at different salinities. Two studies were carried out on Artemia franciscana and copepoda (Cyclops vicinus) including a mono-culture at salinities (30‰, 50‰ and 70‰) used as control and a combine-culture with three factors: factor 1 with three stages of Artemia at day after hatching (DAH)1, DAH2 and DAH3, factor 2 with copepod densities at 50, 100 and 200 ind./L, and factor 3 with two salinities at 30‰, 50‰. Artemia were reared in 1.5 L conical plastic bottle containing 1 L of sea-water and 150 Artemia nauplii. The result at day 5th of culturing showed that three factors (salinity, age and density of copepod) affected on survival of both Artemia and copepoda population. The survival of Artemia was zero in the the combine-culture at 30 ‰ despite of copepod densities, but at salinity of 50 ‰, the lower copepoda presence, the higher survival of Artemia was obtained in the culture