| dc.description.abstract | Snubnose pompano (Trachinotus blochii, Lacepede 1801) is a new potential
species in the Vietnam aquaculture. However, the preliminary study on the
biology and seed production of this species have not study yet, especially
hatching process. In this study, the effects of salinity, water exchange rate and
incubation density on embryonic development and hatching rate of snubnose
pompano are carried out in replicated experiment. Salinity experiment has 5
treatments (20 ‰, 25‰, 30‰, 35‰, 40 ‰). Water exchange rate experiment has
5 treatments (0%, 25%, 50%, 75% and 100%). Incubation density experiment
has 5 treatments (1500 eggs/L, 3000 eggs/L, 4500 eggs/L, 6000 eggs/L and
7500 eggs/L). The analytical methods in this experiment are hatching rate and
deformity rate. The salinity, water exchange rate and incubation density have
the differences statically significant in enhancing hatching rate (p<0.05). The
deformity rates of all treatments in each experiments have the differences not
statistically significant (p>0.05). The experiment was successful to combined 3
optimal conditions in increasing hatching rate and decreasing deformity rate.
This study reports an incubation system of the combined trial that has the result
of hatching rate more than 80% of snubnose pompano eggs. Beside, this study
does the embryonic development of snubnose pompano, small aspect of
histology. These findings are expected to improve hatching process of snubnose
pompano and other commercial species.
Keywords: pompano, Trachinotus blochii, salinity, water exchange, density | en_US |
