Effects of light spectrum on growth and physiological status of gilthead seabream Sparus aurata and rainbow trout Oncorhynchus mykiss reared under recirculating system conditions

dc.contributor.author	Karakatsouli, N	en
dc.contributor.author	Papoutsoglou, SE	en
dc.contributor.author	Pizzonia, G	en
dc.contributor.author	Tsatsos, G	en
dc.contributor.author	Tsopelakos, A	en
dc.contributor.author	Chadio, S	en
dc.contributor.author	Kalogiannis, D	en
dc.contributor.author	Dalla, C	en
dc.contributor.author	Polissidis, A	en
dc.contributor.author	Papadopoulou-Daifoti, Z	en
dc.date.accessioned	2014-06-06T06:47:43Z
dc.date.available	2014-06-06T06:47:43Z
dc.date.issued	2007	en
dc.identifier.issn	01448609	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.aquaeng.2007.01.005	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3768
dc.subject	Brain neurotransmitters	en
dc.subject	Growth	en
dc.subject	Light spectrum	en
dc.subject	Oncorhynchus mykiss	en
dc.subject	Physiology	en
dc.subject	Sparus aurata	en
dc.subject.other	Data acquisition	en
dc.subject.other	Growth rate	en
dc.subject.other	Physiology	en
dc.subject.other	Spectrum analysis	en
dc.subject.other	Fish farming	en
dc.subject.other	Light spectrum	en
dc.subject.other	Recirculating system conditions	en
dc.subject.other	Fisheries	en
dc.subject.other	cyprinid	en
dc.subject.other	fish culture	en
dc.subject.other	glucose	en
dc.subject.other	growth response	en
dc.subject.other	light effect	en
dc.subject.other	lipid	en
dc.subject.other	perciform	en
dc.subject.other	physiological response	en
dc.subject.other	rearing	en
dc.subject.other	recirculating system	en
dc.subject.other	spectrum	en
dc.subject.other	Oncorhynchus mykiss	en
dc.subject.other	Sparus aurata	en
dc.title	Effects of light spectrum on growth and physiological status of gilthead seabream Sparus aurata and rainbow trout Oncorhynchus mykiss reared under recirculating system conditions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.aquaeng.2007.01.005	en
heal.publicationDate	2007	en
heal.abstract	Previously reported data clearly indicate that depending on species, ambient light spectrum can affect fish growth, physiology, behaviour, reproduction, etc. Since light spectrum can be easily controlled in intensive indoor fish farming facilities, the present study aimed to investigate the effects of coloured light on growth performance (body weight, growth rate, food utilization, carcass composition, etc.) and physiological status (blood and plasma parameters, brain neurotransmitters, tissue fatty acid composition, etc.) of two widely reared fish species, gilthead seabream Sparus aurata and rainbow trout Oncorhynchus mykiss. For this purpose, 240 specimens of S. aurata (29.8 ± 0.13 g) and 60 specimens of O. mykiss (71.4 ± 0.30 g) were exposed to white (full-spectrum, fluorescent lamps), red (605 nm) and blue (480 nm) light (lamps covered with appropriate filters) for 11 weeks under recirculating water systems. Blue light had a significantly negative impact on O. mykiss growth performance accompanied with reduced liver total lipids and plasma glucose and increased brain serotonergic and dopaminergic activity. In the case of S. aurata, red light significantly increased brain dopaminergic activity, while a tendency towards reduced growth was also observed. Since these results indicated the establishment of stressful conditions, O. mykiss and S. aurata should not be reared under blue and red light, respectively. For each species, the effect of the remaining light colours tested, was not clearly differentiated so that an appropriate light spectrum for the most efficient farming of O. mykiss and S. aurata could not be suggested, at least for the time period examined. Nevertheless, present results suggest that light colour should be regarded as a rearing factor worth to be further investigated, especially when recirculating systems are concerned. © 2007 Elsevier B.V. All rights reserved.	en
heal.journalName	Aquacultural Engineering	en
dc.identifier.issue	3	en
dc.identifier.volume	36	en
dc.identifier.doi	10.1016/j.aquaeng.2007.01.005	en
dc.identifier.spage	302	en
dc.identifier.epage	309	en