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Part of the book series: Advances in Environmental Microbiology ((AEM,volume 3))

Abstract

Fungal and fungal-like opportunistic pathogens are of primary concern in aquaculture, because they affect a wide range of hosts (both vertebrate and invertebrate) and are very difficult to diagnose, control, or treat. One of the reasons for this difficulty is that some diseases caused by fungal and fungal-like pathogens have no clear external symptoms. Furthermore, the increasing emergence of fungal and fungal-like opportunistic pathogens is correlated with modern production cycles, relying on intensive techniques that often lead to poor water quality and high population density. This combination of stress factors is known as a catalyst for opportunistic infections in aquaculture due to the direct and indirect effects on the host immune response. Therefore, those suboptimal rearing conditions may lead to homeostatic imbalance in favor of secondary invaders. We have therefore covered fungal and fungal-like fish pathogens with significant impact in worldwide aquaculture (black yeasts, Oomycetes, and Microsporidia), as well as control and prevention strategies for pathogens belonging to these groups.

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Correspondence to Nicolas Derome .

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© 2016 Springer International Publishing Switzerland

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Derome, N., Gauthier, J., Boutin, S., Llewellyn, M. (2016). Fungal Secondary Invaders of Fish. In: Hurst, C. (eds) The Rasputin Effect: When Commensals and Symbionts Become Parasitic. Advances in Environmental Microbiology, vol 3. Springer, Cham. https://doi.org/10.1007/978-3-319-28170-4_5

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