Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages

Atlantic salmon in marine farming environments are exposed to potentially detrimental conditions through space and time. For instance, the vertical distribution of parasitic salmon lice larvae shifts in response to changing salinity conditions. We examined whether stock can be moved away from harmfu...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	DW Wright, A Glaropoulos, D Solstorm, LH Stien, F Oppedal
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/bdd4695646ca484aac4b1018d621d2df
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:bdd4695646ca484aac4b1018d621d2df
record_format	dspace
spelling	oai:doaj.org-article:bdd4695646ca484aac4b1018d621d2df2021-11-16T09:41:10ZAtlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages1869-215X1869-753410.3354/aei00136https://doaj.org/article/bdd4695646ca484aac4b1018d621d2df2015-07-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v7/n1/p61-65/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Atlantic salmon in marine farming environments are exposed to potentially detrimental conditions through space and time. For instance, the vertical distribution of parasitic salmon lice larvae shifts in response to changing salinity conditions. We examined whether stock can be moved away from harmful depths using constant-rate vertical movements of lights at night over short periods. Salmon held in research-scale sea cages were exposed to light movements between depths of 0-12 m and at 5 different speeds (1, 2, 4, 8 and 16 m min-1) on 3 nights. Fish were acclimated to lights fixed at 8 m depth in a temperature- and salinity-stratified cage environment, partitioning salmon into surface-positioned (47%) and light-positioned subgroups (53% of the population). A high proportion (50-65%) of the light-positioned group followed lights between upper and lower cage sections when moved up to a critical speed of 4 m min-1. However, the surface-positioned group always persisted. Following decreased when lights were moved at higher speeds, equivalent to or faster than fish swimming speeds measured under fixed lighting. Instantaneous vertical light movements at night may effectively move salmon away from fluctuating unsuitable depths (e.g. lice-rich depths), into temporary favourable depths (e.g. surface brackish waters to treat against stenohaline parasites), and throughout cages to avoid crowding in narrow depth ranges.DW WrightA GlaropoulosD SolstormLH StienF OppedalInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 7, Iss 1, Pp 61-65 (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 DW Wright A Glaropoulos D Solstorm LH Stien F Oppedal Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages
description	Atlantic salmon in marine farming environments are exposed to potentially detrimental conditions through space and time. For instance, the vertical distribution of parasitic salmon lice larvae shifts in response to changing salinity conditions. We examined whether stock can be moved away from harmful depths using constant-rate vertical movements of lights at night over short periods. Salmon held in research-scale sea cages were exposed to light movements between depths of 0-12 m and at 5 different speeds (1, 2, 4, 8 and 16 m min-1) on 3 nights. Fish were acclimated to lights fixed at 8 m depth in a temperature- and salinity-stratified cage environment, partitioning salmon into surface-positioned (47%) and light-positioned subgroups (53% of the population). A high proportion (50-65%) of the light-positioned group followed lights between upper and lower cage sections when moved up to a critical speed of 4 m min-1. However, the surface-positioned group always persisted. Following decreased when lights were moved at higher speeds, equivalent to or faster than fish swimming speeds measured under fixed lighting. Instantaneous vertical light movements at night may effectively move salmon away from fluctuating unsuitable depths (e.g. lice-rich depths), into temporary favourable depths (e.g. surface brackish waters to treat against stenohaline parasites), and throughout cages to avoid crowding in narrow depth ranges.
format	article
author	DW Wright A Glaropoulos D Solstorm LH Stien F Oppedal
author_facet	DW Wright A Glaropoulos D Solstorm LH Stien F Oppedal
author_sort	DW Wright
title	Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages
title_short	Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages
title_full	Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages
title_fullStr	Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages
title_full_unstemmed	Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages
title_sort	atlantic salmon salmo salar instantaneously follow vertical light movements in sea cages
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/bdd4695646ca484aac4b1018d621d2df
work_keys_str_mv	AT dwwright atlanticsalmonsalmosalarinstantaneouslyfollowverticallightmovementsinseacages AT aglaropoulos atlanticsalmonsalmosalarinstantaneouslyfollowverticallightmovementsinseacages AT dsolstorm atlanticsalmonsalmosalarinstantaneouslyfollowverticallightmovementsinseacages AT lhstien atlanticsalmonsalmosalarinstantaneouslyfollowverticallightmovementsinseacages AT foppedal atlanticsalmonsalmosalarinstantaneouslyfollowverticallightmovementsinseacages
_version_	1718426628826071040

Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages

Ejemplares similares