期刊
AQUACULTURE RESEARCH
卷 41, 期 6, 页码 878-883出版社
WILEY
DOI: 10.1111/j.1365-2109.2009.02367.x
关键词
growth; performance; Penaeus vannamei (Boone; 1931); acclimation; low-salinity water
类别
资金
- Consejo Estatal de Ciencia y Tecnologia de Sinaloa (CECYT-Sinaloa)
- Instituto Politecnico Nacional [CGPI-20050235, 20050472]
We evaluated the performance of whiteleg shrimp Penaeus vannamei (Boone, 1931) in response to different stocking densities and acclimation periods. Shrimp postlarvae were acclimated from seawater (30 g L-1) to low-salinity well water (< 1.0 g L-1) at a constant hourly reduction rate of 40, 60, 80 and 100 h. After acclimation to low-salinity well water, postlarvae from each acclimation time treatment were stocked in three replicate tanks at densities of 50, 100, 150 or 200 shrimps m-2 for 12 weeks of growth. Salinity averaged < 1.0 g L-1 for each growth study. The different treatments resulted in significant differences in both the final body weight and the survival rate (SR). Shrimp acclimated for 100 h showed substantially improved survival (83%) relative to shrimp acclimated for shorter periods. Shrimp yields for all cultured periods ranged from 0.32 kg m-2 in tanks stocked at 50 m-2 to 1.14 kg m-2 in tanks stocked at 200 m-2. We conclude that whiteleg shrimp can be successfully grown in low-salinity well water, and that the growth, production output and SRs are significantly higher when shrimp are acclimated for longer periods.
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