Cordiviola de Yuan, Elly
  Edad y crecimiento del dorado - Salminus maxillosus cuv. y val. - en el Paraná medio / Elly Cordiviola Yuan
  En: Physis. Revista de la Asociación Argentina de Ciencias Naturales / Cordiviola de Yuan, Elly. -- Vol. 26, no. 72 (1966). -- Buenos Aires : CONICET, 1966

  Abstract:
The studied individuals have been captured in the Coastiné River, which is the river defining the right margin of the middle Paraná, to the north of Santa Fe City. The whole number of individuals (N=584) has been grouped in classes pf fork lengh with 2 cm intervals. It has then been possible to appreciate a different distribution according to sexes, the males showing lower maximum frecuencies than the females, and conversely. The length-weight relationship (found by the method of minimum squares) showed the following values.
As it can be seen, there is a difference in growth between both sexes, shown by the exponent n of the length-weight relationship. This is also shown by the coefficient of condition, obtained separately for sexes and for fork length, corroborating what was said above inthe sense that, a they grow, the females show the tendency to a progessive broadening. The determination of age, based on the study of scales and vertebrae, would show that, in the concentrations existing in the middle Parana River, females reach higher sizes and ages than the males in the same captures, revealing a different integration of these according to sexes.

  1. ICTIOLOGIA; 2. ICHTHYOLOGY; 3. PECES DE AGUA DULCE; 4. FRESHWATER FISH; 5. INLAND WATERS; 6. ARGENTINA

  (61) Inv.: 01-R03266 S.T.: 27 [09] COR ej.2 ; (61) Inv.: 01-R03267 S.T.: 27 [06] COR ej.1

2 Ejemplares

U. Info.	Inventario	S.T. / Ubicación
ICTIO	01-R03266	27 [09] COR ej.2
ICTIO	01-R03267	27 [06] COR ej.1