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Ortega-Salas, A.A.; Reyes-Bustamante, H.; Reyes B., H. (2013)
Publisher: Universidad Estatal a Distancia
Languages: English
Types: Article
Just like it is important to obtain robust and heavy fish in short periods in aquaculture, in aquariology it is important to efficiently obtain colorful fish, which are usually males, and this makes sex reversal important.  We studied sex reversal and growth for 120 days in 10-gallon tanks, without aeration, with densities of 1 fry per liter. Temperature varied between 28,2 and 28,7°C. The pH was 8,1 to 8,8 and oxygen concentration 6,2 to 6,8mg/l. Aba Api-balanced food with 25% protein was used and three different hormones were added to the treatments: 1) Sten 2) Primoteston and 3) Sostenon 250. Sex reversal in males was 85,0%, 92,5% and 80,0% respectively. Fishes with treatments 1 and 3 gained an average of 0,48g and 4,2cm (with treatment 2: 0,44g and 4cm). Survival was 85%, 92,5% and 80%; however, these differences were not significant. The three treatments gave the expected results of sex reversal, growth and survival.KEY WORDSAnimal feed, population density, hormone supply, aquariums without aeration Así como es importante obtener peces más robustos y con mayor peso en poco tiempo en acuacultura, en acuarología es importante tener peces más vistosos, que generalmente son machos, lo que hace la reversión sexual importante. Estudiamos la reversión sexual y crecimiento durante 120 días en acuarios de 10 galones, sin aireación, las densidades fueron de 1 alevín por litro. La temperatura varió entre 28,2 y 28,7°C. El valor del pH varió de 8,1 a 8,8 y la concentración de oxigeno de 6,2 a 6,8mg/L. Alimento balanceado Api-aba con 25% de proteína se utilizó y se agregaron tres hormonas diferentes a los tratamientos: 1) Sten,  2) Primoteston y 3) Sostenon. La reversión sexual a machos fue de 85,0%, 92,5% y 80,0% respectivamente. A los peces con los tratamientos 1 y 3 ganaron un promedio de 0,48g de peso y longitud total de 4,2cm (con tratamiento 2: 0,44g y 4cm). La sobrevivencia fue de 85%, 92,5% y 80%, sin embargo estas diferencias no fueron significativas.  correspondientemente. Los tres tratamientos ofrecieron los resultados esperados de reversión sexual, crecimiento y supervivencia.PALABRAS CLAVEAlimento balanceado, densidad poblacional, suministro hormonal, acuarios sin aireación
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