The lsraeli Joumal of Aquaculture - Bamidgeh 50(2), 1998, 55-59

GROWTH AND SURVIVAL OF JUVENILE PENAEUS VANNAMEI
IN LOW SALINITY WATER
IN A SEMI-CLOSED RECIRCULATING SYSTEM


Tzachi M. Samocha

Texas Agricultural Experiment Station, Texas A&M University System, Shrimp Mariculture Research, 4301 Waldron Road, Corpus Christi, Texas 78418, USA

Addison L. Lawrence

Texas Agricultural Experiment Station, Texas A&M University System, Shrimp Mariculture Research, 1300 Port St., Port Aransas, Texas 78373, USA

Denise Pooser

Red Ewald Aquaculture, Kames City, Texas 78118, USA

(Received 21.1.98, Accepted 20.4.98)

Abstract

IHHN virus-free Penaeus vannamei juveniles (initial mean weight 2.26 g) were cultured at salinities of 2,4 and 8 ppt for 70 days in an indoor semi-closed recirculating tank system. The stocking density of 27.5 juvenile/m² was maintained in all salinities. High survival rates (98.75-100%) were observed for all treatments. Final mean weights varied 19.0-19.28 g with a weekly growth rate of 1.67-1.7 g. No statistically significant difference in mean final shrimp weights and biomass loads was observed between treatments (p=0.05). The results of this study suggest that P. vannarnei can be cultured in low salinity water with good growth and survival.


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