Show simple item record

dc.contributor.authorPájaro, M.
dc.coverage.spatialArgentina
dc.date.accessioned2007-07-28T15:04:28Z
dc.date.available2007-07-28T15:04:28Z
dc.date.issued2002
dc.identifier.citationRevista de Investigación y Desarrollo Pesquero, 15. p. 111-125
dc.identifier.issn0325-6375
dc.identifier.urihttp://hdl.handle.net/1834/1588
dc.description.abstractNorthern and southern populations of Engraulis anchoita spawn during spring and early summer in the coastal and intermediate shelf regions of the Argentine Sea between 34°S-41°S and 41°S-48°S respectively. Samples were obtained in 8 research surveys carried out during the spawning peak of the species. In both populations, more than 70. of the stomachs analyzed were empty or with scarce food. In plankton samples taken copepods predominated in the whole reproductive area. However, densities (41,000 individuals m-2)were lower than those found on the external shelf. Distribution and number of preys observed in the stomach content were associated to the distribution and abundance of plankton organisms. When comparing coastal and shelf regions it was noted that 77. of the total copepods ingested by both anchovy populations were depredated in the Patagonian area. Time spent on feeding ranged from 11-13 h, from 3.30-6.00 a.m. to 5.00 p.m., with an unclear peak around 4.00-5.00 p.m. This behaviour would be a consequence of the lower food density available in the reproductive habitat and the time schools spend on reproduction. The results imply that schools of E. anchoita are in a continuous search for food in the reproductive area, that they have short feeding migrations offshore and return to the coastal region to continue spawning.en
dc.format.extent774587 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoes
dc.publisherInstituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata
dc.rightsPublisher permission
dc.subject.classificationEngraulidae
dc.subject.classificationConducta alimenticia
dc.subject.classificationContenido estomacal
dc.subject.classificationZooplancton
dc.subject.classificationConducta reproductiva
dc.subject.classificationEstaciones de desove
dc.titleAlimentación de la anchoíta argentina (Engraulis anchoita Hubbs y Marini, 1935)(Pisces: Clupeiformes) durante la época reproductiva.es
dc.title.alternativeFeeding of the Argentine anchovy (Engraulis anchoita Hubbs and Marini, 1935)(Pisces: Clupeiformes)during the spawning seasonen
dc.typeJournal Contribution
dc.bibliographicCitation.endpage125
dc.bibliographicCitation.stpage111
dc.bibliographicCitation.titleRevista de Investigación y Desarrollo Pesqueroes
dc.bibliographicCitation.volume15
dc.description.statusPublisheden
dc.subject.agrovocZooplanktonen
dc.subject.agrovocFeeding behaviouren
dc.subject.agrovocReproductive behaviouren
dc.subject.asfaStomach contenten
dc.subject.asfaZooplanktonen
dc.subject.asfaFeeding behaviouren
dc.subject.asfaReproductive behaviouren
dc.subject.asfaSpawning seasonsen
refterms.dateFOA2021-01-30T18:47:51Z


Files in this item

Thumbnail
Name:
Rev. Invest. Desarr. Pesq. Nº ...
Size:
756.4Kb
Format:
PDF
Description:
Published version

This item appears in the following Collection(s)

Show simple item record