Resumen

GONZALEZ, Ángel; MARQUEZ, Arístide; SENIOR, William  y  MARTINEZ, Gregorio. Constituyentes minerales del Morocoto Piaractus Brachypomus en el Orinoco Medio de Venezuela.. Rev. Cient. (Maracaibo) [online]. 2007, vol.17, n.4, pp.325-329. ISSN 0798-2259.

Mineral Constituents of the Morocoto Piaractus brachypomus in the Middle Orinoco in Venezuela. ABSTRACT An analysis of the concentrations of some mineral as potassium, sodium, calcium, magnesium and iron was made in the muscular tissue of the morocoto Piaractus brachypomus from the middle Orinoco River in Venezuela, captured in some flood lagoons with gillnet. The concentration of these minerals was analyzed by Atomic Absorption with flame of air-acetylene and correction of deuterium, using a team Perkin Elmer 3100 coupled with an autosampler Perkin-Elmer ACE-51. An average of 45.32 ± 0.52 µg/g was determined in the iron concentration, 3497.48 ± 107.06 µg/g in the concentration of calcium, 1528.95 ± 29.25 µg/g in the concentration of magnesium, 3529.66 ± 65.24 µg/g in the concentration of sodium and 16488.90 ± 264.69 µg/g in the concentration of potassium. A variance analysis (ANOVA) and Duncan test later, demonstrated that these concentrations presented significant differences, with a bigger concentration of potassium, followed by the sodium and the calcium, and then the magnesium and the iron. Among these minerals the concentrations of calcium and potassium presented correlation statistically significant. The results constitute a contribution to the knowledge of the chemical composition of P. brachypomus, one of the freshwater fish most important in the country from the commercial point of view and in the aquaculture.

Palabras clave : Fish chemical composition; fish mineral constituents; freshwater fish; Piaractus brachypomus; Orinoco River.