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United States Department of Agriculture

Agricultural Research Service

Research Project: DEVELOPMENT OF CULTURE TECHNOLOGY FOR PRODUCTION OF MARINE FISH SPECIES IN LOW SALINITY CLOSED SYSTEMS

Location: Harry K. Dupree Stuttgart National Aquaculture Research Center

2009 Annual Report


1a.Objectives (from AD-416)
The objectives of this cooperative research project are to:.
1)develop feeding management strategies and diets for optimal growth, efficiency, and reproductive success of high-value marine finfish reared in low salinity recirculating systems;.
2)develop year-round spawning strategies for captive broodstock and larviculture methods for sustainable seed production of high-value marine finfish species; and.
3)develop engineering processes and sustainable effluent technologies to enhance water and energy utilization and reduce environmental impacts within, and discharged from, low-salinity recirculating aquaculture systems.


1b.Approach (from AD-416)
ARS will conduct cooperative research with Florida Atlantic University at Harbor Branch Oceanographic Institute (HBOI). In consultation with the ADODR, cooperative research will be conducted in efforts to design and evaluate cost-effective recirculating nursery and growout production systems for marine finfish cultured in low-salinity water. Cooperative research will primarily focus on four companion areas of study. Area one will focus on determining nutrient requirements and development of feeding strategies and diets for optimal growth, efficiency, and reproductive success of marine fish reared in low-salinity recirculating systems. Area two will focus on developing year-round spawning strategies for captive broodstock and development of early juvenile rearing methods for sustainable seed production of selected marine finfish species. Area three will focus on developing engineering processes and sustainable effluent technologies that enhance water and energy utilization and reduce environmental impacts in low-salinity environments. Area four will focus on disease management strategies for recirculating aquaculture production systems.


3.Progress Report

Studies were conducted in a cooperative effort between USDA-ARS and HBOI-FAU scientists and staff to address three goals: .
1)develop feeding management strategies and diets for optimal growth, efficiency, and reproductive success of high-value marine finfish reared in low salinity recirculating aquaculture systems (RAS);.
2)develop year-round spawning strategies for captive broodstock and larviculture methods for sustainable seed production of high-value marine finfish species; and.
3)develop engineering processes and sustainable effluent technologies to enhance water and energy utilization and reduce environmental impacts within, and discharged from, low-salinity RAS. A study was conducted in four replicated production-scale RAS investigating the performance characteristics of juvenile cobia fed different commercially available pelletized diets formulated for marine fish. Three "off-the-shelf" diets purchased from commercial manufacturers were fed to juvenile cobia. Analysis of the data from this study is ongoing and includes the growth, survival, and feed conversion efficiency data as well as proximate analysis of samples of the fish and diets. A study in production-scale low-salinity RAS was initiated to determine the optimum feed rates for pompano grown at low-salinity to market size. Juvenile pompano have been stocked in four replicated low-salinity (3 ppt) production scale RAS in the STARR facility at HBOI-FAU. These fish are being fed, using automatic feeders, a commercially available diet at four different feed rates: 2%, 3%, 4%, and 5% of their body weight per day. The four feed rates will be compared based on a variety of measurements of performance and feed assimilation efficiency. This study was initiated on 6/24/2009 and should be complete by November of 2009 depending upon growth rates. The ADODR is in regular contact with the cooperator via email, phone, and face-to-face contact.


Last Modified: 9/22/2014
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