Resultados de una campaña de investigación sobre la anchoíta (Engraulis anchoita) del sector bonaerense en el otoño de 1983. Distribución, abundancia y algunos aspectos biológico-pesqueros

Simple item page
dc.bibliographicCitation.endpage68
dc.bibliographicCitation.stpage49
dc.bibliographicCitation.titleRevista de Investigación y Desarrollo Pesqueroes
dc.bibliographicCitation.volume5
dc.contributor.authorHansen, J.E.
dc.contributor.authorGru, D.L.
dc.contributor.authorPerrotta, R.G.
dc.coverage.spatialArgentina
dc.coverage.spatialBuenos Aires
dc.date.accessioned2014-10-03T17:51:58Z
dc.date.available2014-10-03T17:51:58Z
dc.date.issued1986
dc.description.abstractAn extensive area of the continental shelf -between 37°20' and 34°40'S - was reviewed through hidroacoustical methods in order to evaluate the anchovy biomass. Within the area of highest concentration, further data on anchovy abundance were recorded, and fish samples were taken. Large anchovy shoals were located at about 170 nm from Mar del Plata, mainly in zones with sharp changes in oceanographic conditions. The distribution of the species was not uniform, but "contagious", and the log-normal distribution provided the best fit for the echo-integrator recorded data. The biomass was estimated at 1,061,727 tons (Confidence limits in between 921,010 and 1,223,930 tons). Some parameters of the population were estimated, such as: lenght-weight relationship, von Bertalanffy growth curve constants, sex ratio, maturity, and age composition. Taking into account a calculated naturaly mortality rate of M= 0.85, a Maximum Sustainable Yield at about 451,000 tons was estimated (Confidence limits at about 520,000 and 390,000 tons).
dc.description.statusPublisheden
dc.identifier.citationRevista de Investigación y Desarrollo Pesquero, 5. p. 49-68
dc.identifier.issn0325-6375
dc.identifier.urihttps://marabierto.inidep.edu.ar/handle/inidep/229
dc.language.isoes
dc.publisherMar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
dc.subject.asfaLength-weight relationshipsen
dc.subject.asfaSex ratioen
dc.subject.asfaAge compositionen
dc.subject.asfaGrowth curvesen
dc.subject.asfaEcho surveysen
dc.subject.asfaMortalityen
dc.subject.otherClupeiformes
dc.subject.otherEngraulidae
dc.subject.otherrelación de sexos
dc.subject.otherrelaciones largo-peso
dc.subject.otherrelevamientos ecoicos
dc.subject.othercurvas de crecimiento
dc.subject.othercomposición por edad
dc.subject.othermortalidad
dc.titleResultados de una campaña de investigación sobre la anchoíta (Engraulis anchoita) del sector bonaerense en el otoño de 1983. Distribución, abundancia y algunos aspectos biológico-pesqueros
dc.title.alternativeResults from a research cruise on the anchovy (Engraulis anchoita) of Buenos Aires Province conducted in the Autumn of 1983. Distribution, abundance and some fishery-biological aspects
dc.typeJournal Contribution
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
RevINIDEP5_49.pdf
Size:
1.18 MB
Format:
Adobe Portable Document Format
Description:
versión publicada
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Revista de Investigación y Desarrollo Pesquero 1986 Nro 5