A5047081764- Aquaculture Nutrition and Growth
- Fish Ecology and Management Studies
- Reproductive biology and impacts on aquatic species
- Fish Biology and Ecology Studies
- Aquaculture disease management and microbiota
- Fish biology, ecology, and behavior
- Water Quality Monitoring Technologies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Physiological and biochemical adaptations
- Marine Bivalve and Aquaculture Studies
- Aquatic Ecosystems and Biodiversity
- Water Quality and Pollution Assessment
- Crustacean biology and ecology
- Water-Energy-Food Nexus Studies
- Water Resource Management and Quality
- Food Industry and Aquatic Biology
- Water resources management and optimization
- Aquatic life and conservation
- Livestock and Poultry Management
- Business, Innovation, and Economy
- Odor and Emission Control Technologies
- Assembly Line Balancing Optimization
- Environmental and Ecological Studies
- Water Quality Monitoring and Analysis
- Cancer, Hypoxia, and Metabolism
Agricultural Research Service
2016-2025
Harry K. Dupree Stuttgart National Aquaculture Research Center
2016-2025
United States Department of Agriculture
2015-2024
Auburn University
1984-2016
University of Arkansas at Pine Bluff
2004-2016
University of Alabama
1991-2000
Abstract Chemical budgets were determined for nitrogen, phosphorns, dissolved oxygen and chemical demand three 0.1‐ha earthen ponds stocked with Onwchrornis nilotieus at the El Carao National Fish Culture Research Center, Comayagna, Honduras, two 150‐d culture periods, corresponding to rainy dry seasons. Layer chicken litter was added weekly 500 kg matter/ha. Concentrations of nitrogen (N), phosphorus (P), (COD) in pond water increased during each season. No significant seasonal differencea...
ABSTRACT Objective The objective of these two studies was to quantify the comparative performances yearling and 2-year-old reciprocal cross hybrid Striped Bass (White Morone chrysops ♀ × M. saxatilis ♂), also called sunshine bass, water quality in traditional split ponds an outdoor mixotrophic biofloc technology production system. Methods In study 1, two-year-old fish (247.9 g/fish) were stocked at 7,410 fish/ha (0.86 fish/m3) 6.3 fish/m2 (7.1 system tanks grown for 151–153 d. 2, (147.0...
The effect of initial channel catfish (Ictalurus punctatus, Rafinesque, 1818) fingerling biomass (1.4, 1.8, or 2.3 kg m−3) on phytoplankton communities, common off-flavours and stocker production parameters was evaluated in biofloc technology tanks. Stocker size (145.5–172.6 g fish−1) at harvest did not differ among treatments, but net yield increased linearly as (R2 = 0.633). Mean total feed consumption with 0.656) ranged from 10.7 to 15.8 m−3. Total suspended solids (TSS) all treatments...
Abstract Striped bass, Morone saxatilis , is an anadromous fish native to the North American Atlantic Coast and well recognized as one of most important highly regarded recreational fisheries in United States. Decades research have been conducted on striped bass its hybrid (striped × white chrysops ) culture methods established, particularly for fourth largest finfish aquaculture industry States (US $50 million). Domesticated developed since 1990s broodstock are available from government...
The performance of the Pacific white shrimp Litopenaeus vannamei (Boone) under various stocking strategies was evaluated in earthen ponds filled with freshwater amended major ions. Six 0.1-ha located Pine Bluff, AR, USA, were 2003 and 2004, potassium magnesium sulphate added to provide 50 mg K+ L−1 stock salt 0.5 g salinity. In 2003, three either stocked PL15 (39 PL m−2) for 125 days grow out or PL25 55 (23 followed by a 65-day (28 grow-out period. 7, 13 30 m−2 134 out. Salinity averaged 0.7...
Growth and yield (kg ha−1) of the channel catfish (Ictalurus punctatus, Rafinesque, 1818) × blue hybrid [I. punctatus female ×I. furcatus (Lesueur, 1840) male], which shared Jubilee strain as maternal parent, were compared in sixteen 0.1 ha earthen ponds (14 852 fish during April to November growing season. Each genetic group was fed a commercially formulated 32% protein feed daily apparent satiation or at 80% mean ration. Net individual weight higher for with full ration restricted When...
Abstract Sex reversal of early life stage tilapia (approximately 7–12 d post‐hatch, total length averaging 9–11 mm, and weight 10–15 mg) is used commonly to produce populations fish comprised > 5% phenotypic females. The synthetic androgen, 17α‐methyl testosterone (MT), effect sex in tilapia. This paper evaluates environmental impact human food safety aspects MT use for based on a review the scientific literature dilution models farm discharge. Effect treatment was evaluated by regression...
Performance traits and body composition of juvenile hybrid striped bass (Morone chrysops × M. saxatilis) in response to hypoxia were evaluated replicate tanks maintained at constant dissolved oxygen concentrations that averaged 23.0 ± 2.3%, 39.7 3.0% 105.5 9.5% saturation. Fish fed a commercially formulated feed daily apparent satiation. Total intake fish growth yield increased linearly concentration. Nutrient utilization was reduced significantly only the greatest level hypoxia. With...
Abstract Catfish farmers increasingly are producing fish larger than the traditional size of 0.45‐0.57 kg/fish in order to meet processing plant requirements for fish. Production channel catfish Ictalurus punctatus multiple‐batch culture has been investigated a few studies, but impact understocked fingerlings on growth carry‐over is unknown. The present study was conducted quantify growth, feed conversion ratio, net daily yield, and total yield stocker grown single‐batch, one‐season mean...
Abstract This study was conducted to determine the effect of stocking rate on yield channel catfish Ictalurus punctatus and water quality in a mixed suspended-growth (biofloc) production system with zero exchange. Channel (National Warmwater Aquaculture Center 103 strain; average fish weight = 13 g) were stocked into nine 35-m2 tanks (28 m3/tank) at 2.9, 5.7, or 8.5 fish/m2 for 238-d grow-out period. One 1.865-kW blower every three supplied air continuously through diffuser grid (constructed...
This 210-day study compared variation in water quality and fish growth for channel catfish (Ictalurus punctatus; 47 g/fish) stocked earthen ponds (1.5 fish/m2, 14,820/ha) a biofloc technology (BFT) production system with high-density polyethylene-lined rectangular tanks (12.6 126,000/ha). Feed input culture environment affected water-quality dynamics. In ponds, phytoplankton uptake predominated little nitrification occurred, whereas the BFT maintained low ammonia-nitrogen concentrations....