Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar

In the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast currents affect fish health and welfare. We used raceways to expose Atlantic salmo...

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Autores principales:	F Solstorm, D Solstorm, F Oppedal, A Fernö, TWK Fraser, RE Olsen
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/b92cfd8501784e1284a05cca1d9d126a
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spelling	oai:doaj.org-article:b92cfd8501784e1284a05cca1d9d126a2021-11-16T09:43:01ZFast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar1869-215X1869-753410.3354/aei00143https://doaj.org/article/b92cfd8501784e1284a05cca1d9d126a2015-09-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v7/n2/p125-134/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534In the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast currents affect fish health and welfare. We used raceways to expose Atlantic salmon post-smolts (98.6 g, 22.3 cm) to homogeneous water velocities corresponding to 0.2, 0.8 and 1.5 body lengths s-1 (slow, moderate and fast, respectively) over 6 wk. Fish at fast velocity had a 5% lower weight gain compared to fish at moderate and slow velocities, with a corresponding reduction in length. Fish at moderate and fast velocities had lower lipid content in the muscle compared to fish at slow velocity. Hence, fish at slow and moderate velocities had the same weight gain, but fish at slow velocity gained more fat and fish at moderate velocity more muscle protein. Fish at fast velocity had a higher relative ventricular mass, indicating an increased cardiac workload. At slow velocity, individual fish displayed elevated plasma levels of lactate, osmolality and potassium. Our results suggest that post-smolts had the best growth and welfare at moderate velocity and that a current velocity of 1.5 body lengths s-1 could compromise production performance.F SolstormD SolstormF OppedalA FernöTWK FraserRE OlsenInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 7, Iss 2, Pp 125-134 (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 F Solstorm D Solstorm F Oppedal A Fernö TWK Fraser RE Olsen Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar
description	In the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast currents affect fish health and welfare. We used raceways to expose Atlantic salmon post-smolts (98.6 g, 22.3 cm) to homogeneous water velocities corresponding to 0.2, 0.8 and 1.5 body lengths s-1 (slow, moderate and fast, respectively) over 6 wk. Fish at fast velocity had a 5% lower weight gain compared to fish at moderate and slow velocities, with a corresponding reduction in length. Fish at moderate and fast velocities had lower lipid content in the muscle compared to fish at slow velocity. Hence, fish at slow and moderate velocities had the same weight gain, but fish at slow velocity gained more fat and fish at moderate velocity more muscle protein. Fish at fast velocity had a higher relative ventricular mass, indicating an increased cardiac workload. At slow velocity, individual fish displayed elevated plasma levels of lactate, osmolality and potassium. Our results suggest that post-smolts had the best growth and welfare at moderate velocity and that a current velocity of 1.5 body lengths s-1 could compromise production performance.
format	article
author	F Solstorm D Solstorm F Oppedal A Fernö TWK Fraser RE Olsen
author_facet	F Solstorm D Solstorm F Oppedal A Fernö TWK Fraser RE Olsen
author_sort	F Solstorm
title	Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar
title_short	Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar
title_full	Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar
title_fullStr	Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar
title_full_unstemmed	Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar
title_sort	fast water currents reduce production performance of post-smolt atlantic salmon salmo salar
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/b92cfd8501784e1284a05cca1d9d126a
work_keys_str_mv	AT fsolstorm fastwatercurrentsreduceproductionperformanceofpostsmoltatlanticsalmonsalmosalar AT dsolstorm fastwatercurrentsreduceproductionperformanceofpostsmoltatlanticsalmonsalmosalar AT foppedal fastwatercurrentsreduceproductionperformanceofpostsmoltatlanticsalmonsalmosalar AT aferno fastwatercurrentsreduceproductionperformanceofpostsmoltatlanticsalmonsalmosalar AT twkfraser fastwatercurrentsreduceproductionperformanceofpostsmoltatlanticsalmonsalmosalar AT reolsen fastwatercurrentsreduceproductionperformanceofpostsmoltatlanticsalmonsalmosalar
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Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar

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