Pizzolon, Lino creator Quirós, Rolando text ag 2007 continuing spa eng 18 páginas Gross and net primary productivity, respiration and related parameters were estimated in an experimental fish pond where silverside (Basilichthys bonariensis) were bred, using the oxygen light-dark bottle method. The results obtained showed a positive correlation (r = 0.83, p < 0.005) with temperature. The chlorophyll a concentration, the number of phytoplankton cells and the Secchi disk showed no correlation with primary productivity. The mean gross primary productivity on sunny days was 2022 g C m -2 day -1 in the deepest zone, with a 47% variation. For the whole pond the results was 538.7 kgC ha-1 year -1 considering a correction for statistical average of sunny days. The respiration/gross primary relation was 0.50 for the whole pond. With comparative purposes the primary productivity was estimated with the simplified method of daily curves and by the method of oxygen changes in open waters Disponible en estante de INICNE Primary productivity in a fish pond (31° 12´ S; 57° 55´ W) Peces de Agua Dulce Estanques Piscicolas Productividad Argentina Freshwater Fish Inland Waters Breeding Biological Production 0325-108X 234603 v. 11 n. 21-22 (1984) AR-ReUNN 260630 20260702003100.0 234804 spa