Effect of food type and concentration on growth and fatty acid composition of early larvae of the anchovy (Engraulis encrasicolus) reared under laboratory conditions

Handle URI:
http://hdl.handle.net/10754/562429
Title:
Effect of food type and concentration on growth and fatty acid composition of early larvae of the anchovy (Engraulis encrasicolus) reared under laboratory conditions
Authors:
Garrido, Susana; Saiz, Enric; Peters, Janna L.; Ré, Pedrobarcia; Álvarez, Paula; Cotano, Unai; Herrero, D. L.; de Murguía, Amalia Martínez; Irigoien, Xabier ( 0000-0002-5411-6741 )
Abstract:
Experiments were conducted during the summer of 2008 and 2009 to study the growth of early post yolk-sac European anchovy (Engraulis encrasicolus, Linnaeus, 1758) larvae reared under different food regimes. The fatty acid composition was used to assess nutritional condition of the larvae. Prey items used in the experiments were Gymnodinium sanguineum, Brachionus plicatilis and nauplii of the copepods Acartia grani and Euterpina acutifrons. Food type and concentration affected the growth of the larvae. Mixed diets composed of rotifers and copepod nauplii at high concentration resulted in higher anchovy larvae growth rates in comparison with single-prey diets using either rotifers or copepod nauplii. The addition of the dinoflagellate G. sanguineum (25-50cellsml -1) to the prey offered did not enhance significantly larval growth. Highest growth rates of anchovy larvae (0.28mmd -1) were obtained using high concentrations of a mixed diet, particularly the combination of rotifers and A. grani nauplii. Fatty acid composition at hatch was similar to the composition observed in the field, but during larvae ontogeny there was a marked decrease in the contribution of polyunsaturated fatty acids such as EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). Such difference reflects the high requirements of these PUFA for larvae development, and suggests that the food offered failed to fulfill the larvae nutritional requirements. The growth rates obtained in our experiments were, overall, in the lower range of those observed in natural conditions. Taking into considerations the fact that larvae in the field are expected to encounter lower prey concentrations, we discuss the reasons for such disagreement. © 2012 Elsevier B.V.
KAUST Department:
Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program; Plankton ecology Research Group
Publisher:
Elsevier BV
Journal:
Journal of Experimental Marine Biology and Ecology
Issue Date:
Dec-2012
DOI:
10.1016/j.jembe.2012.07.021
Type:
Article
ISSN:
00220981
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Marine Science Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorGarrido, Susanaen
dc.contributor.authorSaiz, Enricen
dc.contributor.authorPeters, Janna L.en
dc.contributor.authorRé, Pedrobarciaen
dc.contributor.authorÁlvarez, Paulaen
dc.contributor.authorCotano, Unaien
dc.contributor.authorHerrero, D. L.en
dc.contributor.authorde Murguía, Amalia Martínezen
dc.contributor.authorIrigoien, Xabieren
dc.date.accessioned2015-08-03T10:37:56Zen
dc.date.available2015-08-03T10:37:56Zen
dc.date.issued2012-12en
dc.identifier.issn00220981en
dc.identifier.doi10.1016/j.jembe.2012.07.021en
dc.identifier.urihttp://hdl.handle.net/10754/562429en
dc.description.abstractExperiments were conducted during the summer of 2008 and 2009 to study the growth of early post yolk-sac European anchovy (Engraulis encrasicolus, Linnaeus, 1758) larvae reared under different food regimes. The fatty acid composition was used to assess nutritional condition of the larvae. Prey items used in the experiments were Gymnodinium sanguineum, Brachionus plicatilis and nauplii of the copepods Acartia grani and Euterpina acutifrons. Food type and concentration affected the growth of the larvae. Mixed diets composed of rotifers and copepod nauplii at high concentration resulted in higher anchovy larvae growth rates in comparison with single-prey diets using either rotifers or copepod nauplii. The addition of the dinoflagellate G. sanguineum (25-50cellsml -1) to the prey offered did not enhance significantly larval growth. Highest growth rates of anchovy larvae (0.28mmd -1) were obtained using high concentrations of a mixed diet, particularly the combination of rotifers and A. grani nauplii. Fatty acid composition at hatch was similar to the composition observed in the field, but during larvae ontogeny there was a marked decrease in the contribution of polyunsaturated fatty acids such as EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). Such difference reflects the high requirements of these PUFA for larvae development, and suggests that the food offered failed to fulfill the larvae nutritional requirements. The growth rates obtained in our experiments were, overall, in the lower range of those observed in natural conditions. Taking into considerations the fact that larvae in the field are expected to encounter lower prey concentrations, we discuss the reasons for such disagreement. © 2012 Elsevier B.V.en
dc.publisherElsevier BVen
dc.subjectAnchovyen
dc.subjectEngraulis encrasicolusen
dc.subjectFatty acidsen
dc.subjectLarval growthen
dc.titleEffect of food type and concentration on growth and fatty acid composition of early larvae of the anchovy (Engraulis encrasicolus) reared under laboratory conditionsen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentMarine Science Programen
dc.contributor.departmentPlankton ecology Research Groupen
dc.identifier.journalJournal of Experimental Marine Biology and Ecologyen
dc.contributor.institutionUniversity of Lisbon, Centre of Oceanography - Guia Marine Laboratory (CO-LMG), Faculty of Sciences, Avenida Nossa Senhora do Cabo, no. 939, 2750-374 Cascais, Portugalen
dc.contributor.institutionInstitut de Ciències del Mar (CSIC), Passeig Marítim de la Barceloneta 37-49, E-08003 Barcelona, Spainen
dc.contributor.institutionHamburg University Institute for Hydrobiology and Fisheries Science, Grosse Elbstrasse 133, 22765 Hamburg, Germanyen
dc.contributor.institutionMarine Research Unit - AZTI Foundation, Herrera Kaia Portualdea z/g, 20110 Pasaia, Basque Country, Spainen
dc.contributor.institutionAquarium of San Sebastian, Plaza de Carlos Blasco de Imaz 1, 20003 San Sebastián, Spainen
kaust.authorIrigoien, Xabieren
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.