Observaciones ecológicas sobre los peces Bocachico real (Prochilodus mariae eigenmann 1922) y el Bocachico cardumero (Suprasinelepichthys laticeps valenciennes 1849) del sistema del rio metica y algunos datos comparativos del Bocachico (Prochilodus r

• Main Author: Fabio Flórez A.
• Format: Article
• Language: English
• Published: Universidad Nacional de Colombia 1986-01-01
• Series: Acta Biológica Colombiana
• Subjects: peces; bocachico; prochilodus; real; cardumero
• Online Access: https://revistas.unal.edu.co/index.php/actabiol/article/view/20743
• ISSN: 0120-548X; 1900-1649

In this investigation, comparative ecological data of three species of freshwater fish is presented. Two of them belong to the Metica river system, the Bocachico Real (Prochilodus mariae Eigenmann 1922) and the Bocachico Cardumero (Suprasinelepichthys laticeps Valenciennes 1849). The Prochilodus reticulatus magdalenae Steindachner 1818, Bocachico to the Magdalena river system. lt was observed that the spawning period coincides with periud of greatest rainfall. A decrease of the water superficial temperature is produced when the Metica's river meanders rains increase, such as it is sustained by Geisler, et al. (1973), for the genus Prochllodus in the Amazon river system. Differential distribution is given for species of Prochilodus as observed by Dahl, et al. (1963;, for Prochilodus r. magdalenae, and by Goulding, (1979)for Prochilodus nigricans in Brazil. Induced reproduction of Prochilodus mariae was obtained, and its reproductive behaviour very similar ro the Prochllodus r. magdalenae (Solano, 1973). The ratios of lenght and weight of the two Metica river species are compared, and there is a significant correlation in the ratio of the gonad's weight to the lenght, weight of the gonad and rnaturlty index of Supraslnelepichthys latlceps. The greatest fertility average corresponds to Prochilodus r. magdalenae with 355.535 ovum, followed by Prochilodus mariae with 215.111 and Suprasinelepichlhys laticeps with 158.667. The condition factor was determined for males and females, as well as the gonad index, maturity index and ovum diameter for the female.