Nucleic acids and fatty acids of the common octopus, Octopus vulgaris, in relation to the growth rate

dc.contributor.author	Miliou, H	en
dc.contributor.author	Fintikaki, M	en
dc.contributor.author	Kountouris, T	en
dc.contributor.author	Tzitzinakis, M	en
dc.contributor.author	Verriopoulos, G	en
dc.date.accessioned	2014-06-06T06:47:54Z
dc.date.available	2014-06-06T06:47:54Z
dc.date.issued	2007	en
dc.identifier.issn	1355557X	en
dc.identifier.uri	http://dx.doi.org/10.1111/j.1365-2109.2006.01613.x	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3846
dc.subject	DNA	en
dc.subject	Fatty acid composition	en
dc.subject	Growth rate	en
dc.subject	Octopus vulgaris	en
dc.subject	RNA	en
dc.subject.other	cephalopod	en
dc.subject.other	cephalopod culture	en
dc.subject.other	fatty acid	en
dc.subject.other	growth rate	en
dc.subject.other	nucleic acid	en
dc.subject.other	rearing	en
dc.subject.other	Aegean Sea	en
dc.subject.other	Mediterranean Sea	en
dc.subject.other	Animalia	en
dc.subject.other	Cephalopoda	en
dc.subject.other	Loligo vulgaris	en
dc.subject.other	Octopus	en
dc.subject.other	Octopus vulgaris	en
dc.title	Nucleic acids and fatty acids of the common octopus, Octopus vulgaris, in relation to the growth rate	en
heal.type	journalArticle	en
heal.identifier.primary	10.1111/j.1365-2109.2006.01613.x	en
heal.publicationDate	2007	en
heal.abstract	The aim of this study was to investigate changes in the ribonucleic acid (RNA)/deoxyribonucleic acid (DNA) ratio and the fatty acid composition of cultured Octopus vulgaris (50-750 g) in relation to recent (last 30 days) specific growth rate (SGR). Wild animals (80-500 g), collected in the field throughout the year (Aegean Sea, Mediterranean), were also examined for the aforementioned biochemical parameters. Octopuses were reared in a closed seawater system at three different temperatures (15, 20 and 25°C). The octopuses were fed on squid (Loligo vulgaris). The cultured animals showed a high n-3 (33-52.9%) and n-6 (3.3-13.7%) polyunsaturated fatty acid content, but with a high variation for 22:6n-3 [docosahexaenoic acid (DHA)], 20:5n-3 [eicosapentaenoic acid (EPA)] and 20:4n-6 [arachidonic acid (AA)]. The proportion of these fatty acids (% total fatty acids) and the RNA/DNA ratio were linearly (P<0.0001) related to SGR. Specifically, RNA/DNA (0.5-1.9) and AA (2.7-10.7%) increased, while EPA (10.4-19.7%) and DHA (20.8-31.9%) decreased, with increasing SGR (0.4-1.7% day-1). The highest levels of SGR, RNA/DNA and AA were detected in small (50-150 g) octopuses reared at 20 and 25°C and in large (500-750 g) animals reared at 15°C. Similar RNA/DNA levels and fatty acid percentages were found in wild octopuses. It is concluded that RNA/DNA, DHA, EPA and AA could be used as biochemical indices for predicting the growth rate of O. vulgaris. © 2006 Blackwell Publishing Ltd.	en
heal.journalName	Aquaculture Research	en
dc.identifier.issue	16	en
dc.identifier.volume	38	en
dc.identifier.doi	10.1111/j.1365-2109.2006.01613.x	en
dc.identifier.spage	1693	en
dc.identifier.epage	1701	en