Abstract
Diseases with uncertain or compound aetiology occur in fish farming and defined as those where the aetiology is unknown, or idiopathic. However, this may be difficult to ascertain and furthermore many different conditions may occur concurrently with more well-defined diseases, such as those with an infectious aetiology. It is characteristic for many idiopathic diseases that they may not be lethal themselves, but when they affect an immuno-compromised fish or occur with other agents, they may cause clinical disease and associated mortality. Similarly, the transition between production-related disease and infectious disease can be obscure.
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Further Reading
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Bruno, D.W., Noguera, P.A., Poppe, T.T. (2013). Idiopathic Diseases. In: A Colour Atlas of Salmonid Diseases. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2010-7_11
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DOI: https://doi.org/10.1007/978-94-007-2010-7_11
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Online ISBN: 978-94-007-2010-7
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