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dc.contributor.authorVera, LMen_UK
dc.contributor.authorMigaud, Herveen_UK
dc.description.abstractRetinal photodamage has previously been studied in teleost fish but very few have been performed on aquaculture species. To study retinal damage, Atlantic cod (Gadus morhua), Atlantic salmon (Salmo salar) and European sea bass (Dicentrarchus labrax) were previously acclimated to a control 12L:12D photoperiod with standard experimental low light intensity (0.1 W/m(2), equivalent to 3.2 x 10(13) photons/s/cm(2)) for at least 4 weeks and then kept under constant darkness (DD) for 3 days. Thereafter, fish were exposed to continuous high intensity light (51-380 W/m(2), equivalent to 1.63 x 10(16)-1.22 x 10(17) photons/s/cm2) for 3, 7, 15 or 25 days before returning to a control 12L:12D photoperiod (same intensity than during acclimation period) to study retinal regeneration over a period of 30 days. Retinal damage was exclusively assessed through the analysis of morphometric parameters. Results showed the presence of light-induced damage in the three species examined, as well as recovery once the control photocycle was restored. Cod was the most light-sensitive species as demonstrated by early signs of retinal damage (from three days of exposure) and reduced photoreceptor layer thickness (PRos/is) (43.1% relative to basal value in comparison to 51.6% and 73.3% respectively in salmon and sea bass). However, once the light-dark cycle was resumed the retina recovered in the three species studied (after 15 days in cod and 30 days in salmon and sea bass). Exposure to continuous high intensity light also resulted in significantly increased plasma cortisol levels in cod at LL15 (13.4 +/- 2.0 ng/ml) and sea bass at LB (120.6 +/- 12.2 ng/ml) and LD15 (54.2 +/- 7.1 ng/ml). These results have important welfare implications with regards to the use of artificial light in culture and should be considered when designing lighting protocols in the aquaculture industryen_UK
dc.relationVera L & Migaud H (2009) Continuous high light intensity can induce retinal degeneration in Atlantic salmon, Atlantic cod and European sea bass. Aquaculture, 296 (1-2), pp. 150-158.
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.subjectRetinal damageen_UK
dc.subjectLight intensityen_UK
dc.subjectSea bassen_UK
dc.titleContinuous high light intensity can induce retinal degeneration in Atlantic salmon, Atlantic cod and European sea bassen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Vera and Migaud_Aquaculture_2009.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.type.statusVoR - Version of Recorden_UK
dc.publisher.addressAmsterdam, Netherlandsen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorVera, LM|0000-0003-0999-055Xen_UK
local.rioxx.authorMigaud, Herve|0000-0002-5404-7512en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameVera and Migaud_Aquaculture_2009.pdfen_UK
Appears in Collections:Aquaculture Journal Articles

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