Se estudió la biología reproductiva del Bocachico, Prochilodusmagdalenae, en el río San Jorge, Co... more Se estudió la biología reproductiva del Bocachico, Prochilodusmagdalenae, en el río San Jorge, Colombia. La especie es un pez con proporción sexual hembra: macho de 1,2:1, diferente a lo esperado. Presenta desarrollo ovocitario sincrónico en dos grupos, un desove anual que se extiende de abril a septiembre asociado al ciclo hidrológico del río San Jorge, talla media de madurez sexual estimada en 30,2 cm LT, ovocitos grandes de 950 µm y fecundidad promedio de 109 972 ovocitos, cuya ecuación fue F =7271,6 WO0,60, r =0,93, n =14.
The bocachico (Prochilodus magdalenae) it is the main species of the fishery the basins of the ma... more The bocachico (Prochilodus magdalenae) it is the main species of the fishery the basins of the magdalena and sinú rivers, due to their great acceptance and commercial value in Colombia. Between April and June of 2000, 44 specimens were gathered between Lorica and Tierralta, with sizes between 19.4 and 28.2 cm. of standard longitude (SL) and 24.6 and 35.0 cm. gives overall length (OL), with all up weights between 212.0 and 600.0 g. The were placed in Gilson solution, being applied the gravimetric method for the estimate and the fecundity. The size and weight average were 23.9 cm (± 2.0), 369.0 g (±80.0), respectively. The weight of the ovaries oscillated between 38.9 and 168.8 g, averaging 87.6 g (± 29.6), with high fecundity and fluctuating between 69981 and 357012 eggs with average of 153114 (± 57491). The beginning sizes (BS) and half maturity (HM) were 19.4 and 23.8 cm. Of OL, with significant differences (p=0.01) to those reported by Valderrama & Vejarano (2001). The results of ...
Se estudió la biología reproductiva del Bocachico, Prochilodusmagdalenae, en el río San Jorge, Co... more Se estudió la biología reproductiva del Bocachico, Prochilodusmagdalenae, en el río San Jorge, Colombia. La especie es un pez con proporción sexual hembra: macho de 1,2:1, diferente a lo esperado. Presenta desarrollo ovocitario sincrónico en dos grupos, un desove anual que se extiende de abril a septiembre asociado al ciclo hidrológico del río San Jorge, talla media de madurez sexual estimada en 30,2 cm LT, ovocitos grandes de 950 µm y fecundidad promedio de 109 972 ovocitos, cuya ecuación fue F =7271,6 WO0,60, r =0,93, n =14.
The bocachico (Prochilodus magdalenae) it is the main species of the fishery the basins of the ma... more The bocachico (Prochilodus magdalenae) it is the main species of the fishery the basins of the magdalena and sinú rivers, due to their great acceptance and commercial value in Colombia. Between April and June of 2000, 44 specimens were gathered between Lorica and Tierralta, with sizes between 19.4 and 28.2 cm. of standard longitude (SL) and 24.6 and 35.0 cm. gives overall length (OL), with all up weights between 212.0 and 600.0 g. The were placed in Gilson solution, being applied the gravimetric method for the estimate and the fecundity. The size and weight average were 23.9 cm (± 2.0), 369.0 g (±80.0), respectively. The weight of the ovaries oscillated between 38.9 and 168.8 g, averaging 87.6 g (± 29.6), with high fecundity and fluctuating between 69981 and 357012 eggs with average of 153114 (± 57491). The beginning sizes (BS) and half maturity (HM) were 19.4 and 23.8 cm. Of OL, with significant differences (p=0.01) to those reported by Valderrama & Vejarano (2001). The results of ...
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