Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada

The fate of farmed fish after escape from aquaculture operations, and their potential ecosystem impacts, remains a primary concern for the sustainable development of this industry. We simulated small- (<50 fish) and large-scale (500 fish) escape events of rainbow trout Oncorhynchus mykiss from 2...

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Autores principales:	K Patterson, PJ Blanchfield
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2013
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/fb5712977c75406082b6703a048ac117
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spelling	oai:doaj.org-article:fb5712977c75406082b6703a048ac1172021-11-17T10:04:46ZOncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada1869-215X1869-753410.3354/aei00073https://doaj.org/article/fb5712977c75406082b6703a048ac1172013-06-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v4/n1/p53-65/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534The fate of farmed fish after escape from aquaculture operations, and their potential ecosystem impacts, remains a primary concern for the sustainable development of this industry. We simulated small- (<50 fish) and large-scale (500 fish) escape events of rainbow trout Oncorhynchus mykiss from 2 commercial operations in the North Channel of Lake Huron, the site of greatest freshwater production in Canada. Individual fish were either implanted with telemetry transmitters (n = 120) or marked with external tags (n = 1000) to monitor their movements and estimate survival and growth upon recapture. Rainbow trout dispersed quickly from the farms, and overall showed variable levels of site fidelity (2 to 40% after 3 mo), with most fish returning to the farm sites on multiple occasions after departure. Released fish were often detected in near-shore areas or at neighbouring commercial operations, but escapees were capable of long distance movements (>350 km), where they were located in rivers, open waters and in an adjacent Great Lake. Rainbow trout maintained high specific growth rates (average 0.33% d-1) in the wild, both at and away from the farms. Known survival of escaped fish after a 3 mo period following release was ~50%, with some fish recaptured up to ~2.5 yr after release. Angling and avian predation accounted for the majority of mortalities. The ability of farmed fish to survive, successfully forage near and far from aquaculture operations and their preponderance to occupy near-shore habitats provide a strong basis for understanding the potential risks that escaped fish may pose to the fish community of Lake Huron.K PattersonPJ BlanchfieldInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 4, Iss 1, Pp 53-65 (2013)
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 K Patterson PJ Blanchfield Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada
description	The fate of farmed fish after escape from aquaculture operations, and their potential ecosystem impacts, remains a primary concern for the sustainable development of this industry. We simulated small- (<50 fish) and large-scale (500 fish) escape events of rainbow trout Oncorhynchus mykiss from 2 commercial operations in the North Channel of Lake Huron, the site of greatest freshwater production in Canada. Individual fish were either implanted with telemetry transmitters (n = 120) or marked with external tags (n = 1000) to monitor their movements and estimate survival and growth upon recapture. Rainbow trout dispersed quickly from the farms, and overall showed variable levels of site fidelity (2 to 40% after 3 mo), with most fish returning to the farm sites on multiple occasions after departure. Released fish were often detected in near-shore areas or at neighbouring commercial operations, but escapees were capable of long distance movements (>350 km), where they were located in rivers, open waters and in an adjacent Great Lake. Rainbow trout maintained high specific growth rates (average 0.33% d-1) in the wild, both at and away from the farms. Known survival of escaped fish after a 3 mo period following release was ~50%, with some fish recaptured up to ~2.5 yr after release. Angling and avian predation accounted for the majority of mortalities. The ability of farmed fish to survive, successfully forage near and far from aquaculture operations and their preponderance to occupy near-shore habitats provide a strong basis for understanding the potential risks that escaped fish may pose to the fish community of Lake Huron.
format	article
author	K Patterson PJ Blanchfield
author_facet	K Patterson PJ Blanchfield
author_sort	K Patterson
title	Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada
title_short	Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada
title_full	Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada
title_fullStr	Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada
title_full_unstemmed	Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada
title_sort	oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in lake huron, canada
publisher	Inter-Research
publishDate	2013
url	https://doaj.org/article/fb5712977c75406082b6703a048ac117
work_keys_str_mv	AT kpatterson oncorhynchusmykissescapedfromcommercialfreshwateraquaculturepensinlakehuroncanada AT pjblanchfield oncorhynchusmykissescapedfromcommercialfreshwateraquaculturepensinlakehuroncanada
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Oncorhynchus mykiss escaped from commercial freshwater aquaculture pens in Lake Huron, Canada

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