An aquaculture risk model to understand the causes and consequences of Atlantic Salmon mass mortality events: A review

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dc.contributor.authorSajid, Zaman
dc.contributor.authorGamperl, A. Kurt
dc.contributor.authorParrish, Christopher C.
dc.contributor.authorColombo, Stefanie M.
dc.contributor.authorSantander, Javier
dc.contributor.authorMather, Charles
dc.contributor.authorNeis, Barbara
dc.contributor.authorHolmen, Ingunn Marie
dc.contributor.authorFilgueira, Ramón
dc.contributor.authorMcKenzie, Cynthia H.
dc.contributor.authorSouto Cavalli, Lissandra
dc.contributor.authorJeebhay, Mohamed
dc.contributor.authorGao, Wenzhao
dc.contributor.authorLópez Gómez, María A.
dc.contributor.authorOchs, Cory
dc.contributor.authorLehnert, Sarah
dc.contributor.authorCouturier, Cyr
dc.contributor.authorKnott, Christine
dc.contributor.authorRomero, João F.
dc.contributor.authorCaballero-Solares, Albert
dc.contributor.authorCembella, Allan
dc.contributor.authorMurray, Harry M.
dc.contributor.authorFleming, Ian A.
dc.contributor.authorFinnis, Joel
dc.contributor.authorFast, Mark D.
dc.contributor.authorWells, Mark
dc.contributor.authorSingh, Gerald
dc.date.accessioned2025-05-23T15:55:41Z
dc.date.available2025-05-23T15:55:41Z
dc.date.issued2024
dc.description.abstractMass mortality events (MMEs) are defined as the death of large numbers of fish over a short period of time. These events can result in catastrophic losses to the Atlantic salmon aquaculture industry and the local economy. However, they are challenging to understand because of their relative infrequency and the high number of potential factors involved. As a result, the causes and consequences of MMEs in Atlantic salmon aquaculture are not well understood. In this study, we developed a structural network of causal risk factors for MMEs for aquaculture and the communities that depend on Atlantic salmon aquaculture. Using the Interpretive Structural Modeling (ISM) technique, we analysed the causes of Atlantic salmon mass mortalities due to environmental (abiotic), biological (biotic) and nutritional risk factors. The consequences of MMEs were also assessed for the occupational health and safety of aquaculture workers and their implications for the livelihoods of local communities. This structural network deepens our understanding of MMEs and points to management actions and interventions that can help mitigate mass mortalities. MMEs are typically not the result of a single risk factor but are caused by the systematic interaction of risk factors related to the environment, fish diseases, feeding/nutrition and cage-site management. Results also indicate that considerations of health and safety risk, through pre- and post-event risk assessments, may help to minimize workplace injuries and eliminate potential risks of human fatalities. Company and government-assisted socio-economic measures could help mitigate post-mass mortality impacts. Appropriate and timely management actions may help reduce MMEs at Atlantic salmon cage sites and minimize the physical and social vulnerabilities of workers and local communities.
dc.description.reviewstatusReviewed
dc.description.scholarlevelFaculty
dc.description.sponsorshipThe authors gratefully acknowledge the financial support from the Government of Newfoundland and Labrador's Department of Industry, Energy and Technology, Canada (grant number 20210487) and the Ocean Frontier Institute, Memorial University of Newfoundland, Canada through an award from the Canada First Research Excellence Fund. GGS acknowledges support from the Nippon Foundation Ocean Nexus Center at EarthLab, University of Washington.
dc.identifier.citationSajid, Z., Gamperl, A. K., Parrish, C. C., Colombo, S. M., Santander, J., Mather, C., Neis, B., Holmen, I. M., Filgueira, R., McKenzie, C. H., Cavalli, L. S., Jeebhay, M., Gao, W., Gómez, M. a. L., Ochs, C., Lehnert, S., Couturier, C., Knott, C., Romero, J. F., . . . Singh, G. G. (2024). An aquaculture risk model to understand the causes and consequences of Atlantic Salmon mass mortality events: A review. Reviews in Aquaculture, 16(4), 1674–1695. https://doi.org/10.1111/raq.12917
dc.identifier.urihttps://doi.org/10.1111/raq.12917
dc.identifier.urihttps://hdl.handle.net/1828/22303
dc.language.isoen
dc.publisherReviews in Aquaculture
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectaquaculture
dc.subjectaquaculture system designing
dc.subjectenvironmental stressors
dc.subjectmass mortality event (MME)
dc.subjectrisk assessment
dc.subjectsalmon disease
dc.subject.departmentSchool of Environmental Studies
dc.titleAn aquaculture risk model to understand the causes and consequences of Atlantic Salmon mass mortality events: A review
dc.typeArticle

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