The larval stage of marine fish is the bottleneck in the development of mariculture. In this study, the effects of
microalgae and live food density on feeding rate, feeding intensity, growth, survival and starvation tolerance of
miiuy croaker Miichthys miiuy larvae during early development were studied under controlled conditions.
When microalgae Nannochloropsis oculata were added to the experimental tanks, all of the above-mentioned indexes
increased, independently of the live food density. The feeding rate, feeding intensity, growth and survival
of miiuy croaker increased with rotifer density, and the highest values of these parameters were attained when
rotifer density was 10 ind/ml; however, these indexes were lower at rotifer density of 25 ind/ml than at 10 and
15 ind/ml. More importantly, the best starvation tolerance was observed when rotifer density was 5 ind/ml,
followed (in decreasing levels of tolerance) by 10, 15 and 1 ind/ml. The results demonstrated that the feeding
rate, feeding intensity, growth and survival of miiuy croaker in practical production benefited from increased
rotifer density (with an optimum density at 10 ind/ml) and the addition of algae to the culture water.
The larval stage of marine fish is the bottleneck in the development of mariculture. In this study, the effects ofmicroalgae and live food density on feeding rate, feeding intensity, growth, survival and starvation tolerance ofmiiuy croaker Miichthys miiuy larvae during early development were studied under controlled conditions.When microalgae Nannochloropsis oculata were added to the experimental tanks, all of the above-mentioned indexesincreased, independently of the live food density. The feeding rate, feeding intensity, growth and survivalof miiuy croaker increased with rotifer density, and the highest values of these parameters were attained whenrotifer density was 10 ind/ml; however, these indexes were lower at rotifer density of 25 ind/ml than at 10 and15 ind/ml. More importantly, the best starvation tolerance was observed when rotifer density was 5 ind/ml,followed (in decreasing levels of tolerance) by 10, 15 and 1 ind/ml. The results demonstrated that the feedingrate, feeding intensity, growth and survival of miiuy croaker in practical production benefited from increasedrotifer density (with an optimum density at 10 ind/ml) and the addition of algae to the culture water.
การแปล กรุณารอสักครู่..
