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Please use this identifier to cite or link to this item: http://hdl.handle.net/1834/1588

Title: Alimentación de la anchoíta argentina (Engraulis anchoita Hubbs y Marini, 1935)(Pisces: Clupeiformes) durante la época reproductiva
Other Titles: Feeding of the Argentine anchovy (Engraulis anchoita Hubbs and Marini, 1935)(Pisces: Clupeiformes)during the spawning season
Authors: Pájaro, M.
ASFA Terms: Stomach content
Zooplankton
Feeding behaviour
Reproductive behaviour
Spawning seasons
Issue Date: 2002
Publisher: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata
Citation: Revista de Investigación y Desarrollo Pesquero, 15. p. 111-125
Abstract: Northern 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.
URI: http://hdl.handle.net/1834/1588
ISSN: 0325-6375
Appears in Collections:1. Revista de Investigación y Desarrollo Pesquero

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