Controlling total ammonia-nitrogen (TAN) concentrations is the primary concern when sizing a biofilter for use in a recirculating aquaculture system. Sizing decisions are best based on previous experience with a given biofilter media in a specific biofilter configuration.
Fenneropenaeus chinensis was the most important farmed shrimp species in China until 1995. Lessons learned from its development made China a pioneer, especially in shrimp larval production. Shrimp farmers must enhance their understanding of the interactions of farming activities with
Strategies to control Vibrio bacteria at aquaculture farms must revolve around limiting inputs, including those from postlarvae suppliers, those that come in with the water, those that remain in the soil between crops and those in the feed and accumulated
Control of Vibrio bacteria should focus on minimizing overall bacterial loads and the potential for horizontal transmission. The challenge for hatchery managers is identifying gaps in biosecurity and plugging them without creating niches for other potential pathogens.
Incorporating feed manufacturing into an aquaculture business offers greater and more efficient product access, control and logistics, as well as additional profit potential. A feasibility study that plans for growth and includes both a business plan and economic analysis is
A feeding demonstration in Costa Rica evaluated the partial replacement of fishmeal in diets for spotted rose snappers with soy protein concentrate (SPC). It found no significant difference between the performance of fish fed an SPC-based diet and those that
A deficiency of cholesterol in shrimp diets can result in slower growth and higher mortality rates. A study by the authors investigated krill meal as a partial replacement for a cholesterol supplement in diets for juvenile Litopenaeus vannamei shrimp.
A project in Florida is studying the feasibility of a marine aquaponic system containing red drum and two native saltwater species. Water that exits the plant raceways is filtered and recirculated to the fish tanks. In tests, sea purslane grew
Environmental lighting, which synchronizes all stages of aquatic life, is an important consideration as more aquatic animals are produced indoors in highly controlled environments. Artificial lighting should deliver uniform light across the water’s surface in rearing tanks and mimic not
Interest in the aquaculture of stalked barnacles has risen in recent years as a response to increasing market demand and concern over the conservation of natural stocks. Is there enough knowledge, however, to establish the culture of stalked barnacles?
Anecdotal information has suggested that pond-reared hybrid striped bass are more vulnerable to transportation-related stressors than cage-reared fish. Study results suggested that accumulation of carbon dioxide and decreasing pH levels may contribute to this phenomenon. Agitation during simulated transport mitigated