Modelling disease in aquatic systems that are spread by processes operating at different temporal and spatial scales: examples from salmon aquaculture.
2017
Murray, A. G. | Salama, N. K. G.
Disease is an important limitation on aquatic production, particularly for intensified aquaculture. Disease spread depends on behaviour of the pathogens on local scales and over short periods, their interaction with currents operating over many kilometres and days and the build-up of infection in populations over months and large geographical areas often spread by anthropogenic processes. Models are able to identify critical factors operating at different time and space scales in the spread of disease and use these to identify disease control measure. Models incorporating different levels of complexity are appropriate for simulating different diseases and for application for different purposes. Simple transmission models can be useful for high-level disease control policy but more complexity incorporating details of anthropogenic and hydrodynamic contacts may be required to inform management of specific groups and clusters of farms. Diseases affecting salmon aquaculture are used to explore application of modelling as this industry is relatively a well-documented and, for reasons of familiarity, examples tend to be taken from Scotland.
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