Año 1996, Número 10 – 45-55

Año 1996, Número 10 – 45-55

Fabré, N.N.; Díaz de Astarloa, J.M. 1996.  Pleuronectiformes de importancia comercial del Atlántico Sudoccidental, entre los 34°30′ y 55°S. Distribución y consideraciones sobre su pesca.
Rev. Invest. Desarr. Pesq., 10: 45-55.
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Catch records of flatfishes obtained in exploratory cruises and in the existing literature in the geographical area between 34°S and 55°S in the Western South Atlantic were analyzed to elaborate maps of the distribution of the most common flatfish species in this area. Data from commercial fleet landings at Mar del Plata Harbor were used to analyze the distribution and areas of resource concentration. The flatfish most frequently found in this study area belong to three families: 1. Paralichthidae, with the species: Thysanopsetta naresi, Paralichthys orbignyanus, Paralichthys patagonicus, Paralichthys isosceles, Xystreurys rasile. 2.-Pleuronectidae, with the species: Oncopterus darwini. 3. Achiropsettidae with: Mancopsetta maculata, Mancopsetta milfordi, Achiropsetta tricholepsis. Flatfish landings in the Mar del Plata Harbor vary seasonally according to the catches of hake, mackerel or anchovy and depend upon the strata of the fleet analysed. CPUE (t/HP/hours) data indicate two large areas of concentration in the bonaerense continental shelf, one between 35° -38°S and the other between 39° -40°S. The former attains higher relative abundance but higher densities are observed at higher latitudes and longitudes. In the geographic sector analyzed, the flatfishes are distributed according to a latitudinal and depth pattern. The same occurs to Pleuronectiformes of other seas.