Effects of high salinity on the larviculture of snubnose pompano (Trachinotus blochii) in outdoor systems

Benjamin C. Young ； Riyadh Hussain Alfaggeh ； Pai-Po Lee

《臺灣水產學會刊》 48卷1期 (2021/03) Pp. 41-45

https://doi.org/10.29822/JFST.202103_48(1).0005

摘要

Snubnose pompano (Trachinotus blochii) is a new potential aquaculture species in Saudi Arabia and, as such, is of economic importance in the Red Sea region. However, there is a lack of information on the larviculture of the snubnose pompano in high salinity conditions outdoors. This study estimated the survival rate, growth performance, and cost of the larviculture of snubnose pompano outdoors at different levels of salinity ((33 per mille), (36 per mille), (39 per mille), and (42 per mille)) at 32.3°C-36.0°C. Experiments were conducted in triplicates with 1000 larvae per outdoor tank. The control group was maintained at salinity level of (42 per mille) indoors. Eighteen hours after hatching, the larvae were transferred outdoors and maintained at different salinity levels ((33 per mille), (36 per mille), (39 per mille), and (42 per mille)). The survival rate, growth performance, and the cost of raising larvae were monitored from day 1 to day 45. Our results indicated that the best salinity level for larval survival outdoors is (33 per mille)-(39 per mille). There were significant differences between the indoor and outdoor systems in terms of survival rate, growth performance, and costs. Overall, outdoor larviculture of snubnose pompano is feasible at (33 per mille)-(39 per mille) salinity levels.

關鍵字

Snubnose pompano ； larviculture ； salinity ； growth performance