Mechanical water circulation aids pond water quality
Mechanical water circulation can prevent stratification and provide more dissolved oxygen near pond bottoms. Strong water mixing can also control algae growth.
Simple solution: Turf mats collect soft-shell clam spat
For soft-shell clam spat collection, artificial turf mats laid directly on the substratum can increase settlement of commercial-size clam spat.
Water level management, BMPs cut water use, pond effluents
Pond water level management can reduce overflow volume and ground water use. Implementing BMPs reduces pollutant discharge.
Effluent effects from aquaculture ponds
In general, lower-intensity pond and cage farming tends to discharge higher overall pollution loads in farm effluents than closed aquaculture systems.
Automated temperature-controlled recirculation systems
A temperature-control system with a central chiller was found to enhance chilling and research capacity over a system with multiple unit chillers because replicating experiments in a single process control system minimized variations in the temperatures and chilling rates in the individual tanks. Temperature-holding experiments found slight differences at different temperature levels.
Varied microbes important to recirculating aquaculture systems
Microbes facilitate high-intensity recirculating aquaculture systems. Research indicates that the microbial community changes throughout grow-out.
Integration, modeling key to advancing aquaculture
Careful assessments, modeling and integration of juvenile releases with other fisheries management measures can help restore stocks in objectively planned enhancement programs.
Land use for aquaculture production
Space requirements for aquaculture include the culture water area and associated physical culture facilities as well as the land used to raise plant-based feed ingredients.
Flawed risk assessment of contaminants in salmon
A risk assessment of PCBs and other contaminants in farmed and wild salmon was flawed and did not reflect public health community opinions.
Tractor-powered paddlewheels provide emergency pond aeration
Even with dedicated aerators, aquaculture farms can experience stress and mortality in culture animals due to low dissolved oxygen concentrations in pond water. Simple tractor-powered aerators offer a quick and portable solution to low dissolved oxygen levels that provides strong emergency aeration and water movement.
Pilot system recovers protein, lipids from fish byproducts
It is technologically feasible to recover functional muscle proteins and lipids from fish processing byproducts using isoelectric solubilization/precipitation.
Improved aeration, D.O. management advance catfish production
Emergency aeration with tractor-powered paddlewheels allowed U.S. catfish farmers to increase feeding and stocking rates, and double production.
Limits of catfish production in ponds
The potential yield of catfish from earthen ponds is high, but several factors limit production under commercial conditions.
BMPs proposed for food safety in rainbow trout culture in Mexico
Proposed best management practices for rainbow trout production address eight areas of production covering the entire culture cycle.
Measuring water flow
Water flow within channels can be measured using the float method or calculated using rating curves that project water velocity based on a series of finite measurements.
Tilapia farming in Honduras
Tilapia culture is an important component of local food production in Honduras. Rising exports have raised in-country demand and production.