Effects of rearing density on growth, brain neurotransmitters and liver fatty acid composition of juvenile white sea bream Diplodus sargus L.

dc.contributor.author	Papoutsoglou, SE	en
dc.contributor.author	Karakatsouli, N	en
dc.contributor.author	Pizzonia, G	en
dc.contributor.author	Dalla, C	en
dc.contributor.author	Polissidis, A	en
dc.contributor.author	Papadopoulou-Daifoti, Z	en
dc.date.accessioned	2014-06-06T06:47:05Z
dc.date.available	2014-06-06T06:47:05Z
dc.date.issued	2006	en
dc.identifier.issn	1355557X	en
dc.identifier.uri	http://dx.doi.org/10.1111/j.1365-2109.2005.01401.x	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3382
dc.subject	Brain neurotransmitters	en
dc.subject	Diplodus sargus	en
dc.subject	Growth	en
dc.subject	Liver fatty acids	en
dc.subject	Rearing density	en
dc.subject.other	growth rate	en
dc.subject.other	juvenile	en
dc.subject.other	perciform	en
dc.subject.other	stocking density	en
dc.subject.other	Archosargus rhomboidalis	en
dc.subject.other	Diplodus sargus	en
dc.title	Effects of rearing density on growth, brain neurotransmitters and liver fatty acid composition of juvenile white sea bream Diplodus sargus L.	en
heal.type	journalArticle	en
heal.identifier.primary	10.1111/j.1365-2109.2005.01401.x	en
heal.publicationDate	2006	en
heal.abstract	White sea bream Diplodus sargus L. is a fish species that develops dominance hierarchies and aggressive behaviour against its conspecifics. On the other hand, stocking density is known to affect social interactions, while an appropriate density for D. sargus efficient farming remains to be elucidated. For this purpose, juvenile D. sargus (14.3 g) were reared in 88.4 L tanks, for 10 weeks, under six rearing densities (10, 15, 20, 25, 30 and 35 fish tank -1). Water quality was not affected by rearing density. Best growth, in terms of final weight, specific growth rate, weight variation and food utilization, was achieved at 10 fish tank-1. At this treatment the lowest body water content, hepatosomatic and splenosomatic indices, higher body and liver lipid content were also observed. Brain neurotransmitter results indicated increased dopaminergic activity in populations held at higher rearing densities, while serotonergic activity was not affected. Moreover, no significant differences were detected for liver fatty acids. Results of the present study, compared with previously reported data, suggest that, within the range tested, the lowest realistic rearing density for juvenile white sea bream would be 10 fish tank-1. Higher rearing densities led to decreased growth, which seemed to be related to changes in intraspecific competition and social behaviour. © 2005 Blackwell Publishing Ltd.	en
heal.journalName	Aquaculture Research	en
dc.identifier.issue	1	en
dc.identifier.volume	37	en
dc.identifier.doi	10.1111/j.1365-2109.2005.01401.x	en
dc.identifier.spage	87	en
dc.identifier.epage	95	en