The salmon aquaculture industry is a highly profitable industry, known to contribute significantly to the Canadian economy. During this time an ectoparasite called the sea louse may infect the salmon leading to animal welfare concerns a significant economic loss. Lumpfish are a species of cleaner fish used as a biological control for sea lice and offer a more sustainable and ecologically friendly option for sea lice management than previous chemical controls. They are a recent addition to Canadian aquaculture, and their cleaning efficacy must be well understood under Canadian conditions.
The aim of this project is to determine which families are resistant to bacterial kidney disease, a bacterial infection that affects both wild and farmed Atlantic salmon. To do this many families of Atlantic salmon from a commercial aquaculture company are to be purposefully infected with the bacteria that causes the disease to establish which families have a high rate of survival and which have a low rate of survival.
Recirculating aquaculture systems (RAS) are land based fish farms that recycle the water from the fish tanks using multiple water treatment processes. Fish produce large amounts of carbon dioxide, through respiration, that needs to be removed during the water treatment process since high levels of carbon dioxide are hazardous to fish. Currently the most common method of removing carbon dioxide from recirculating water is with degassing towers. Moving bed biofilters and sidewall-box airlift pumps could also be used as a method of carbon dioxide control.
Recirculating aquaculture systems are indoor, tank-based systems which allow aquaculturalists to raise fish in controlled environmental conditions through the use of several water treatment processes. Research related to the aquaculture industry is important, as it is currently one of the fastest growing food industries. This research aims to improve the operation of these systems by reducing the amount of organic waste in the recirculated water through the use of ozone.
This research project is intended to take the first steps forward in breeding hardier, disease resistant Atlantic salmon. Infectious salmon anemia is a disease of Atlantic salmon that has led to millions of dollars of losses within the aquaculture industry yearly on a global scale. Through a combination of genomic data and disease trial data, the intern will be able to determine which genes confer a measurable resistance to Infectious salmon anemia. The partner organization (Cooke Aquaculture) will potentially be able to use the data generated by the intern in future breeding schemes.
The objective of the project is to test and optimize a novel stationary bed filter for removing fine waste solids from the water of recirculating aquaculture systems. The filter uses plastic media to intercept the waste solids. Beta prototypes of the filter have been installed at four hatcheries owned by Cooke Aquaculture Inc. in the provinces of New Brunswick and Newfoundland. The four prototypes operate at different water superficial velocities and use different plastic media. A major issue with all prototypes is a pulse of dirty water after each cleaning of the filter.