Crecimiento de Arius kekkleri y Sciadeops troschelli (Pises: Ariidae) en jaulas flotantes en zonas estuarinas de la bahía de Buenaventura
Arius kesslerl & Sciadeops troschelii (Pisces: Ariidae) growth in floating net cages in estuarine waters of Buenventura Bay-Colombia
Keywords:
Arius Kessleri, Sciadeops Troschelii, Crecimiento, Jaula, Flotante (es)Arius Kessleri, Sciadeops Troschelii, Growth, Net Cage, Floating (en)
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Dos especies de Bagres estuarinos Arius kessleri (CoCoCo) y Sciadeops troschelii (Nato) fueron criados en jaulas flotantes a densidades variables en zonas estuarinas de la bahía de Buenaventura. Después de 120 días, para el Cococo se obtuvieron pesos de 84.1 y 64 g a densidades de 5-30 individuos/rrr' con tasas de crecimiento de 0.58 a 0.39 g/día; las producciones netas obtenidas fluctúan entre 0.35-1.16 Kg/m', la supervivencia fluctúa entre 86-100% y las tasas de conversión de alimento f1uctuaron entre 3.3 y 5.0. El Nato alcanza pesos de 164 y 184 g a partir de pesos iniciales de 41 y 108 g; sus tasas de crecimiento f1uctuaron entre 0.50 y 0.82 g/día; las producciones netas obtenidas f1uctuaron entre 0.58 y 0.75 Kg/m', y sus supervivencias fluctuaron entre 83 y 100%. Se concluye que a pesar de su gran rusticidad y supervivencia, estas dos especies ofrecen poco potencial para ser criadas en jaulas en zonas estuarinas.
Two species of estuary catfish the Arius kessleri (CoCoCo) and the Sciadeops troschelii (Nato) were held in floating net cages at varying densities in estuarine waters of Buenventura Bay-Colombia. After 120 days for the Cococo had weights of 84.1 g Y64 g with densities of 5 and 30 specimen/rn'. The growth average was 0.58-0.39 g/day; the net yield obtained vary from 0.35 to 1.16 Kg/m', the food conversion ratio vary from 3.3 to 5.0 and de survival rate vary from 86% to 100%. With the Nato we obtained weights of 164 and 184 g, beginning with weights of 41 and 108 g their growth average vary from 0.50 to 0.82 g/day. The net yield obtained vary from 0.58 to 0.75 Kg/m' and the survival rate vary from 83% to 100%. From these results we conclude that the two species of catfish studied are strong species but they do not offer good possibilities for fish farming in estuarine waters.
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