Disease management mitigates risk of pathogen transmission from maricultured salmonids

Open marine net pens facilitate virus and sea lice transfer, occasionally leading to infections and outbreaks of disease in farmed salmon. A review of 3 salmon pathogens (infectious salmon anaemia virus [ISAV], salmon alphavirus [SAV] and the salmon louse Lepeophtheirus salmonis) shows that increase...

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Autores principales:	SRM Jones, DW Bruno, L Madsen, EJ Peeler
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2015
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/3224bacda79a4def8fbdaf3768ef1f26
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spelling	oai:doaj.org-article:3224bacda79a4def8fbdaf3768ef1f262021-11-16T10:30:42ZDisease management mitigates risk of pathogen transmission from maricultured salmonids1869-215X1869-753410.3354/aei00121https://doaj.org/article/3224bacda79a4def8fbdaf3768ef1f262015-01-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v6/n2/p119-134/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Open marine net pens facilitate virus and sea lice transfer, occasionally leading to infections and outbreaks of disease in farmed salmon. A review of 3 salmon pathogens (infectious salmon anaemia virus [ISAV], salmon alphavirus [SAV] and the salmon louse Lepeophtheirus salmonis) shows that increased risk of exposure to neighbouring farms is inversely related to distance from and directly related to biomass at the source of infection. Epidemiological techniques integrating data from oceanography, diagnostics and pathogen shedding rates and viability contribute to improved understanding of pathogen transmission pathways among farms and permit the designation of areas of risk associated with sources of infection. Occupation of an area of risk may increase the likelihood of exposure, infection and disease among susceptible fish. Disease mitigation in mariculture occurs at 2 scales: area-based (coordinated stocking, harvesting and fallowing) and farm-based (vaccination, early pathogen detection, veterinary prescribed treatments and depopulation or early harvest in the event of viral disease). Collectively, implementation of mitigation measures results in virus disease outbreaks of shorter duration with lower mortality and therefore reduces the likelihood of pathogen transmission. In contrast, the mitigation of sea lice transmission is less likely to be effective in some areas due to the loss of parasite sensitivity to therapeutants and to dissemination of larval lice when parasites occur below management thresholds. For wild populations, risk of pathogen spillback is estimated from farm-based epidemiological data; however, validation, particularly for ISAV and SAV, is required using direct surveillance.SRM JonesDW BrunoL MadsenEJ PeelerInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 6, Iss 2, Pp 119-134 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
spellingShingle	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 SRM Jones DW Bruno L Madsen EJ Peeler Disease management mitigates risk of pathogen transmission from maricultured salmonids
description	Open marine net pens facilitate virus and sea lice transfer, occasionally leading to infections and outbreaks of disease in farmed salmon. A review of 3 salmon pathogens (infectious salmon anaemia virus [ISAV], salmon alphavirus [SAV] and the salmon louse Lepeophtheirus salmonis) shows that increased risk of exposure to neighbouring farms is inversely related to distance from and directly related to biomass at the source of infection. Epidemiological techniques integrating data from oceanography, diagnostics and pathogen shedding rates and viability contribute to improved understanding of pathogen transmission pathways among farms and permit the designation of areas of risk associated with sources of infection. Occupation of an area of risk may increase the likelihood of exposure, infection and disease among susceptible fish. Disease mitigation in mariculture occurs at 2 scales: area-based (coordinated stocking, harvesting and fallowing) and farm-based (vaccination, early pathogen detection, veterinary prescribed treatments and depopulation or early harvest in the event of viral disease). Collectively, implementation of mitigation measures results in virus disease outbreaks of shorter duration with lower mortality and therefore reduces the likelihood of pathogen transmission. In contrast, the mitigation of sea lice transmission is less likely to be effective in some areas due to the loss of parasite sensitivity to therapeutants and to dissemination of larval lice when parasites occur below management thresholds. For wild populations, risk of pathogen spillback is estimated from farm-based epidemiological data; however, validation, particularly for ISAV and SAV, is required using direct surveillance.
format	article
author	SRM Jones DW Bruno L Madsen EJ Peeler
author_facet	SRM Jones DW Bruno L Madsen EJ Peeler
author_sort	SRM Jones
title	Disease management mitigates risk of pathogen transmission from maricultured salmonids
title_short	Disease management mitigates risk of pathogen transmission from maricultured salmonids
title_full	Disease management mitigates risk of pathogen transmission from maricultured salmonids
title_fullStr	Disease management mitigates risk of pathogen transmission from maricultured salmonids
title_full_unstemmed	Disease management mitigates risk of pathogen transmission from maricultured salmonids
title_sort	disease management mitigates risk of pathogen transmission from maricultured salmonids
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/3224bacda79a4def8fbdaf3768ef1f26
work_keys_str_mv	AT srmjones diseasemanagementmitigatesriskofpathogentransmissionfrommariculturedsalmonids AT dwbruno diseasemanagementmitigatesriskofpathogentransmissionfrommariculturedsalmonids AT lmadsen diseasemanagementmitigatesriskofpathogentransmissionfrommariculturedsalmonids AT ejpeeler diseasemanagementmitigatesriskofpathogentransmissionfrommariculturedsalmonids
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Disease management mitigates risk of pathogen transmission from maricultured salmonids

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