Recent growth trends and challenges in the Norwegian aquaculture industry

Over the last 20 years, the Norwegian production of salmon and rainbow trout has increased by about 10% per year and will exceed 1 million MT in 2010. All on-growing after stocking in sea takes place in open cages in the fjords and along the coast, and the average cage volume has increased by about...

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Autor principal:	Bergheim,Asbjørn
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2012
Materias:	salmon production cage size escape diseases sea lice wild stocks Norway
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300026
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spelling	oai:scielo:S0718-560X20120003000262013-01-03Recent growth trends and challenges in the Norwegian aquaculture industryBergheim,Asbjørn salmon production cage size escape diseases sea lice wild stocks Norway Over the last 20 years, the Norwegian production of salmon and rainbow trout has increased by about 10% per year and will exceed 1 million MT in 2010. All on-growing after stocking in sea takes place in open cages in the fjords and along the coast, and the average cage volume has increased by about 300 times since the 1980's. Out of a total number of 4,000 cages more than 1,200 cages hold 20,000-60,000 m³. In 2005, the term 'maximum allowable biomass (MAB)' was introduced and limits the highest annual production to 65 tons per 1,000 m³ licensed volume. Generally, the increasing volume and deeper cages have made the control of the fish stock more challenging. Sea lice attacks, especially in South Norway, have represented a major problem over the last three years. Reduced growth, increased mortality and lice treatment leads to significant losses and extra costs for the industry. Some recent reports indicate that increased use of wrasses in the cages improved the situation in the summer 2010 compared to the previous year. Extensive vaccinating and strict regulations regarding handling, etc. usually result in effective protection against diseases, but still there may occur regional outbreaks of serious diseases, such as pancreas disease (PD) and infectious salmon anaemia (ISA). Attacks of sea lice and escape of salmon and trout from fish farms are considered to be among the main reasons for the strongly reduced wild stocks of sea trout and a reduced return of salmon spawners in the fjords and along the coast of southwest Norway.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.40 n.SpecIssue 20122012-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300026en103856/vol40-issue3-fulltext-26
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	salmon production cage size escape diseases sea lice wild stocks Norway
spellingShingle	salmon production cage size escape diseases sea lice wild stocks Norway Bergheim,Asbjørn Recent growth trends and challenges in the Norwegian aquaculture industry
description	Over the last 20 years, the Norwegian production of salmon and rainbow trout has increased by about 10% per year and will exceed 1 million MT in 2010. All on-growing after stocking in sea takes place in open cages in the fjords and along the coast, and the average cage volume has increased by about 300 times since the 1980's. Out of a total number of 4,000 cages more than 1,200 cages hold 20,000-60,000 m³. In 2005, the term 'maximum allowable biomass (MAB)' was introduced and limits the highest annual production to 65 tons per 1,000 m³ licensed volume. Generally, the increasing volume and deeper cages have made the control of the fish stock more challenging. Sea lice attacks, especially in South Norway, have represented a major problem over the last three years. Reduced growth, increased mortality and lice treatment leads to significant losses and extra costs for the industry. Some recent reports indicate that increased use of wrasses in the cages improved the situation in the summer 2010 compared to the previous year. Extensive vaccinating and strict regulations regarding handling, etc. usually result in effective protection against diseases, but still there may occur regional outbreaks of serious diseases, such as pancreas disease (PD) and infectious salmon anaemia (ISA). Attacks of sea lice and escape of salmon and trout from fish farms are considered to be among the main reasons for the strongly reduced wild stocks of sea trout and a reduced return of salmon spawners in the fjords and along the coast of southwest Norway.
author	Bergheim,Asbjørn
author_facet	Bergheim,Asbjørn
author_sort	Bergheim,Asbjørn
title	Recent growth trends and challenges in the Norwegian aquaculture industry
title_short	Recent growth trends and challenges in the Norwegian aquaculture industry
title_full	Recent growth trends and challenges in the Norwegian aquaculture industry
title_fullStr	Recent growth trends and challenges in the Norwegian aquaculture industry
title_full_unstemmed	Recent growth trends and challenges in the Norwegian aquaculture industry
title_sort	recent growth trends and challenges in the norwegian aquaculture industry
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300026
work_keys_str_mv	AT bergheimasbjørn recentgrowthtrendsandchallengesinthenorwegianaquacultureindustry
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Recent growth trends and challenges in the Norwegian aquaculture industry

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