Improving Sustainability & Mitigating the Challenges of Aquaculture

Lay Summary 

By studying the effects of infectious diseases and developing effective treatments, by producing novel and sustainable fish diets, by improving environmental sustainability, and by determining the effects of climate change on fish health, this research will improve the resilience and global competitiveness of the Canadian aquaculture industry.


The goal of aquaculture in the marine environment is to add farmed animals to a natural ecosystem, while maintaining ecosystem health. To achieve this, management of aquaculture requires sustainable practices that are effective in a dynamic and challenging ocean environment where water quality, climate effects and the risk of disease are not completely controlled.


In this program, researchers will work with industry partners to improve practices and examine fish health and resiliency. New approaches to enhance productivity will also be developed.


This research is divided into five components, which aim to:


1. Develop sustainable and therapeutic diets for Atlantic salmon, including plant-based sources of feed that will enable the industry to reduce its reliance on fish meal and oil.


2. Understand and mitigate the effects of pathogens and climate change on fish health. This research will examine the capacity of Atlantic salmon to tolerate low oxygen and higher than normal temperatures, and to identify how their physiology, immunology and disease resistance are affected.


3. Develop sustainable control measures for pathogens of cultured fishes. This research includes the development of efficient and sustainable methods to control parasites and pathogens.


4. Lessen the impact of aquaculture on the environment and on wild fish populations. Key aspects to be investigated include aquaculture escapes, the response of wild fish communities to cage sites, impacts of aquaculture on the seafloor ecosystem, and waste management/bioprocessing (primarily shell and fish carcasses).


5. Identify alternative aquaculture species to diversify Canada’s already strong aquaculture industry. This research will initially examine two candidate species that have been identified as having significant market potential: sablefish and sea cucumber.


Losses to the global aquaculture industry due to infectious diseases are estimated by the United Nation's Food and Agriculture Organization at approximately US$6 billion annually. This research will help improve the productivity and global competitiveness of Canada’s aquaculture industry, particularly the production of Atlantic salmon, Canada’s main aquaculture species.


More information about this project can be found here.


Adapted from




Ocean Sciences
School of Fisheries
Faculty of Engineering & Applied Science
Newfoundland and Labrador
Cold Ocean and Arctic, Science, Technology and Society
Climate Change
Sea cucumber
Start date 
1 Jan 2020
Lead Organization 
Ocean Frontier Institute (OFI)
Partner Organization 
Department of Fisheries and Oceans
University of Guelph
Center for Aquaculture Technologies Canada
Elanco Canada Ltd.
EWOS Chile
Golden Eagle Sable Fish
Newfoundland Cod Broodstock Company
Icey Waters Arctic Charr
Cargill Innovation
EWOS Canada
National Research Council
Alfred Wagner Institute of Germany
University of Waterloo
LabexMER of France
HIOA of Norway
Institut de Ciències del Mar, CSIC of Spain
Cooke Aquaculture