Aquafeeds
Understanding the oxygen demand of aquafeeds
Manufactured aquafeeds, if improperly managed, can result in undesirable oxygen demand that can reduce dissolved oxygen levels and pollution through effluents, and stress cultured animals.
Fisheries
Study: Pyridine is ‘highly toxic’ to crabs and caused 2021 die-off
A Newcastle University study found that pyridine is 'highly toxic' to crabs and is the chemical responsible for crab and lobster die-offs in the United Kingdom.
Responsibility
Atmospheric pollution affects water quality
Acid rain typically does not heavily affect aquaculture operations, and application of agricultural limestone can buffer water against the impacts of acid rain at facilities that use stream water.
Aquafeeds
Animal byproduct concentrates useful tools in formulation
With the market volatility of fishmeal, as well as rising sustainability concerns, the aquaculture industry is seeking sources of protein, such as animal byproduct concentrates, to substitute for fishmeal.
Responsibility
Trace metals toxic at high concentrations
Excessive concentrations of trace metals, especially copper, are toxic to phytoplankton and other aquatic plants. The ionic forms of trace metals are toxic to fish and other aquatic animals, but soluble, chelated trace metals are relatively non-toxic.
Responsibility
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.