Journal
AQUACULTURE ENVIRONMENT INTERACTIONS
Volume 2, Issue 1, Pages 61-74Publisher
INTER-RESEARCH
DOI: 10.3354/aei00030
Keywords
Farm size; Pathogen transmission; Hydrodynamics
Categories
Funding
- Scottish Government [FC11103]
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Global aquaculture production has rapidly increased over recent decades, primarily through the increase in production per farm unit. However, size (biomass) may be a factor in the transmission of infectious diseases between hydrodynamically linked fish farms. A combined epidemiological-simplified hydrodynamic model is used to demonstrate that as farm units increase they experience higher numbers of infections caused by a range of pathogen characteristics. The model demonstrates that as farm size increases in areas where faster currents prevail, there is a need to increase the separation distance between farms to prevent pathogen transmission. A comparison of production regimes demonstrates, however, that fewer, highly separated, larger farms reduce overall losses compared to numerous smaller farms in close proximity to each other.
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