https://www.socictopen.socict.org/files/original/d94ea55750f7c4648dbae6dae16c3633.pdf 8d67a8907fc939825307a3bc3dba6266 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Agricultura sostenible Description An account of the resource Dominio científico: Agricultura sostenible Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Importance of the Río de la Plata estuarine front (southwestern Atlantic Ocean) in the feeding ecology of Argentine anchovy, Engraulis anchoita (Clupeiformes, Clupeidae) Importancia del frente estuarial del Río de la Plata (Océano Atlántico sudoccidental) en la ecología trófica de la anchoíta argentina, Engraulis anchoita (Clupeiformes, Clupeidae) Creator An entity primarily responsible for making the resource María D Viñas, Luciano N Padovani, Marcelo Pájaro Description An account of the resource The feeding of Engraulis anchoita was studied in the coastal reproductive habitat of the northern population during the spawning period. Stomach contents of anchovy adults and plankton samples taken during a research cruise were examined. The highest stomach fullness values were found in the Rio de la Plata estuary, particularly at stations close to the surface salinity front. Copepods, particularly those < 1 mm total length, represented by Paracalanus spp. and Oithona spp., were the most abundant prey. The dominance of small copepods in the Argentine anchovy diet is noted for the first time. Ecological implications of this fact are discussed. Other abundant preys were appendicularians, cladocerans, and fish eggs. The species composition of the zooplankton samples coincided roughly with that found in the stomach contents. However, selective feeding was observed on preys > 1 mm total length. This might be explained by a low gill rakers efficiency of adult anchovies to retain small prey. In the Rio de la Plata front, both the reported large biomasses of zooplankton and the observed intense anchovy feeding revealed the ecological significance of this front, especially when compared with the contiguous 'poor in food' coastal areas.Se estudió la alimentación de la población norteña de Engraulis anchoita en el hábitat reproductivo costero durante su periodo de desove. Se analizaron los contenidos estomacales de adultos de anchoíta y muestras de zooplancton tomados durante un crucero de investigación. Los mayores valores de repleción estomacal se encontraron en el estuario del Río de la Plata, particularmente en estaciones cercanas al frente salino de superficie. Los copépodos fueron las presas más abundantes, particularmente especímenes < 1 mm de longitud total, representados por Paracalanus spp. y Oithona spp. Este dominio de pequeños copépodos en la dieta de la anchoíta argentina se destaca por primera vez. Se discutieron las implicancias ecológicas de este hecho. Otras presas abundantes fueron: apendicularias, cladóceros y huevos de peces. La composición de especies en las muestras de zooplancton coincidió a grandes rasgos con las encontradas en los contenidos estomacales. Sin embargo, se observó selección sobre presas > 1 mm de longitud total. Esto se puede explicar por la baja eficiencia del aparato branquial de anchoítas adultas para retener pequeñas presas. En el frente del Río de la Plata, las altas biomasas de zooplancton reportadas y la intensa alimentación observada, evidencian su significancia ecológica, especialmente cuando se compara con aguas costeras adyacentes pobres en alimento. Date A point or period of time associated with an event in the lifecycle of the resource 2011 Subject The topic of the resource Alimentación, Argentina, Atlántico sudoccidental, Copepods, Copépodos, Engraulis anchoita, Southwestern Atlantic, Stomach content, contenido estomacal, estuarine front, feeding, frente estuarial Source A related resource from which the described resource is derived Latin American Journal of Aquatic Research Publisher An entity responsible for making the resource available Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Biology (General), Oceanography, Aquaculture. Fisheries. Angling Relation A related resource <a href="http://www.scielo.cl/scielo.php?script=sci_arttext&amp;pid=S0718-560X2011000200002" target="_blank" rel="noreferrer noopener">http://www.scielo.cl/scielo.php?script=sci_arttext&amp;pid=S0718-560X2011000200002</a>