X-ray irradiation: Technology improves safety of live oysters
Various techniques have been proposed to reduce Vibrio bacteria in live and processed oysters. In studies, X-ray treatments successfully reduced Vibrio populations.
Artificial incubation, hormonal sex reversal promoted tilapia boom
The tilapia production boom results from technology that combines artificial egg incubation and monosex fry production using hormonal sex reversal.
Tilapia fingerlings from varied systems deliver similar grow-out performance
Results of a 120-day study showed that Nile tilapia fingerlings produced in incubation units, hapas or ponds exhibited similar grow-out performance.
Greenhouse covers, intensive management enhance tilapia fingerling production
Intensive management of tilapia broodstock and artificial incubation of eggs increase output and cut costs for fingerling production.
Tilapia production in Asia
Tilapia production in Asia focuses on either fresh whole fish or larger frozen whole fish or fillets, depending on farm size, cash flow and other factors.
Organic acids potential replacement for antibiotic treatments of tilapia
Dietary organic acids can exert antimicrobial effects and benefit growth, nutrient utilization and other health parameters in tilapia.
Add value to shrimp harvests: Darken environment to enhance shrimp color
Shrimp color is caused by pigments that play an important role in camouflage for survival. For farmed shrimp, proper coloration is generally achieved via synthetic astaxanthin in feed.
A look at aquaculture in Guyana
With its large quantities of water and little industry to pollute it, Guyana has the potential to become a greater player in global aquaculture.
Antigens provide immunity against ich in channel catfish trials
Vaccination against the Ich parasite is an alternative to chemical treatment. Fish develop a humoral immune response to trophont antigens, with the degree of protection related to the immunizing doses of trophonts used.
Hybrid assay can detect IMNV in resource-poor settings
The method can shorten analysis time and has applications for IMNV diagnosis in resource-poor settings because it does not require specialized equipment.
Rapid test detects NHP in penaeid shrimp
A rapid lateral-flow immunoassay using monoclonal antibody combinations can identify necrotizing hepatopancreatitis (NHP) infection in less than 15 minutes.
Black tiger shrimp domestication advances
The production of early generations of domesticated broodstock in open-environment ponds may have hampered the domestication of black tiger shrimp.
Oysters and the impacts of climate change
In recent decades, mass summer mortality in oyster aquaculture has become widespread, with 50 percent of crops lost in a given year. Losses are often associated with spawning, which is normally seasonal but highly temperature-dependent.
How to prepare and interpret blood smears
A significant part of any hematological evaluation of fish is the preparation, microscopic examination and interpretation of stained blood smears.
Enhancing immunity: Tools for protecting farmed shrimp
Shrimp do not produce antibodies and therefore do not remember prior exposure to pathogens, a critical component of long-term protective immunity.
Wastewater reuse supports paddlefish project
A pilot project in Kentucky that uses wastewater effluent and decommissioned tanks at a water treatment plant has cultured over 70,000 phase II paddlefish.