FISHERIES RESEARCH INSTITUTE,MOA,TAIWAN

The objective of this study was to develop techniques for artificially propagating fire shrimp (Lysmata debelius Bruce, 1983). The effects of feeding concentration, feeding strategy, temperature, and salinity on growth and survival were examined. The larvae feeding on Artemia salina nauplii at a density of 2 individuals/ml had the highest survival rate, while the larvae feeding on less than 1 individual/ml of nauplii grew significantly slower than the other groups (p < 0.05). Two-day delays in feeding were detrimental to the survival rate and growth. The survival rate improved as the water temperature rose to 24°C, 27°C, and 30°C . There was no significant difference between the three temperatures, and growth was greatest at 30°C. Survival and growth rates were better in the 24-39 psu salinity group than in the other groups, and there was no significant difference between the four groups. Overall, survival rate and growth would be improved at 27-30°C, 24-39 psu, and 1-2 individuals/ml A. salina nauplii feeding. In addition, postlarval development occurred between 62 and 122 dph (days post hatch).