Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout

Infestation of sea trout Salmo trutta L. by salmon lice Lepeophtheirus salmonis is associated with increased mortality risk and possible sub-lethal effects. Separating anthropogenic causes of infestation from background ecological variability has proved difficult. A unique 25 yr dataset was collated...

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Autores principales:	S Shephard, C MacIntyre, P Gargan
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2016
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/52e244b61f7b4777bbd9a0d2c32d5cea
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spelling	oai:doaj.org-article:52e244b61f7b4777bbd9a0d2c32d5cea2021-11-11T11:07:00ZAquaculture and environmental drivers of salmon lice infestation and body condition in sea trout1869-215X1869-753410.3354/aei00201https://doaj.org/article/52e244b61f7b4777bbd9a0d2c32d5cea2016-10-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v8/p597-610/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Infestation of sea trout Salmo trutta L. by salmon lice Lepeophtheirus salmonis is associated with increased mortality risk and possible sub-lethal effects. Separating anthropogenic causes of infestation from background ecological variability has proved difficult. A unique 25 yr dataset was collated comprising lice counts from >20000 sea trout sampled from 94 separate river and lake systems in Ireland and Scotland at varying distances from marine salmon farms. Statistical models were developed to explore the potential effects of distance to a salmon farm, rainfall and ambient temperature on sea trout lice infestation and body condition (weight at length). These models indicated that sea trout captured closer to salmon farms had significantly higher levels of lice infestation, and that this effect was exacerbated in warmer years. Sea trout sampled closer to salmon farms also had significantly reduced weight at length (impaired condition), with the strongest impact in dry years. The study dataset covers a broad geographic area over multiple years, and accounts for variability in temperature and rainfall. Our results imply a rather general impact of salmon farming on lice infestation and body condition of sea trout. This finding has implications for current lice control management strategies, coastal zone planning, recovery of sea trout stocks in aquaculture areas and the scale of aquaculture-free zones.S ShephardC MacIntyreP GarganInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 8, Pp 597-610 (2016)
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 S Shephard C MacIntyre P Gargan Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout
description	Infestation of sea trout Salmo trutta L. by salmon lice Lepeophtheirus salmonis is associated with increased mortality risk and possible sub-lethal effects. Separating anthropogenic causes of infestation from background ecological variability has proved difficult. A unique 25 yr dataset was collated comprising lice counts from >20000 sea trout sampled from 94 separate river and lake systems in Ireland and Scotland at varying distances from marine salmon farms. Statistical models were developed to explore the potential effects of distance to a salmon farm, rainfall and ambient temperature on sea trout lice infestation and body condition (weight at length). These models indicated that sea trout captured closer to salmon farms had significantly higher levels of lice infestation, and that this effect was exacerbated in warmer years. Sea trout sampled closer to salmon farms also had significantly reduced weight at length (impaired condition), with the strongest impact in dry years. The study dataset covers a broad geographic area over multiple years, and accounts for variability in temperature and rainfall. Our results imply a rather general impact of salmon farming on lice infestation and body condition of sea trout. This finding has implications for current lice control management strategies, coastal zone planning, recovery of sea trout stocks in aquaculture areas and the scale of aquaculture-free zones.
format	article
author	S Shephard C MacIntyre P Gargan
author_facet	S Shephard C MacIntyre P Gargan
author_sort	S Shephard
title	Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout
title_short	Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout
title_full	Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout
title_fullStr	Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout
title_full_unstemmed	Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout
title_sort	aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout
publisher	Inter-Research
publishDate	2016
url	https://doaj.org/article/52e244b61f7b4777bbd9a0d2c32d5cea
work_keys_str_mv	AT sshephard aquacultureandenvironmentaldriversofsalmonliceinfestationandbodyconditioninseatrout AT cmacintyre aquacultureandenvironmentaldriversofsalmonliceinfestationandbodyconditioninseatrout AT pgargan aquacultureandenvironmentaldriversofsalmonliceinfestationandbodyconditioninseatrout
_version_	1718439123924025344

Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout

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