The objective of the study was to describe the viability of Orestias luteus Valenciennes, 1846 with food dependence on the yolk sac. The tendency to die of prelarvae during the first seven days was increasing. The study was carried out in theprototype culture laboratory of Fundación Titicaca Perú (FUNTI-PERU), Puno, Perú. As biological material, 100 units of O. luteus prelarvae were used and distributed in two aquariums with 50 specimens each. The environmental quality of the water was controlled by a HANNA HI98194 multiparameter meter (temperature = 12°C-15°C, dissolved oxygen= 6.0 mg·L-1 - 6.3 mg·L-1, pH = 7.0 - 7.5). Water replacement was performed for 15 days five times with a frequency of every three days. O. luteus prelarvae were not fed for the first seven days and from the eighth to the tenth day were fed an exogenous diet of Artemia salina Linnaeus, 1758. However, on the ...

  The aim of the study was to describe the exogenous larval feeding and survival of Orestias luteus (Valenciennes, 1846) under controlled conditions. The study was carried out in the prototype culture laboratory of the Fundación Titicaca Perú (FUNTI-PERU) in the city of Puno, Peru. Biological material was used, 896 units of O. luteus larvae where it was distributed in three treatments and with three repetitions: 1st) T1 = 299 units, 2nd) T2 = 300 units and 3rd) T3 = 297 units. Three replicate treatments were considered: 1st) larvae fed with newly hatched Artemia salina (Linnaeus, 1758) nauplii / artemia, Brand Mackay Marine, 2nd) Artemia salina + Ceriodaphnia dubia (Richard, 1894), and 3rd) C. dubia + Daphnia pulex (Linnaeus, 1758). When comparing survival in O. luteus according to the experimental treatments of exogenous feeding with live foods, there were statistically significa...

The objective of the study was to describe the total postlarval length of Trichomycterus rivulatus Valenciennes, 1846 (suche) under controlled conditions. A total of 887 postlarvae of T. rivalatus after 25 days post-hatching was used as biological material. Water quality (temperature, dissolved oxygen and pH) was controlled. Before each feeding, siphoning was done to remove food debris and 90% of the water volume was replaced in all treatments. Growth (total length) was measured with a millimeter ruler (precision ± 0.01) at the beginning and end of the experimental phase. Survival for each experimental treatment before live feed supply was: T2 = 99.66% > T1 = 98.97% > T3 = 97.63%. At 21 days the postlarvae showed an average total length of 21.6 ± 0.51 mm, while at 45 days the total length was 30.53 ± 0.52 mm. A statistical difference was found between the total length at 21 and ...

La extinción de especies nativas del lago Titicaca resulta uno de los mayores problemas no solo para la salud humana por consumo alimentario, sino además en la subsistencia propia de las especies. El objetivo de esta investigación fue producir alevinos en la especie Orestias luteus mediante reproducción artificial con alimentación natural para su conservación en el lago Titicaca, Puno-Perú. El estudio se realizó durante los meses de febrero hasta noviembre del 2013. Para la conservación, se analizó la fecundación artificial mediante el método seco, así como la producción de cadena alimentaria viva en ambiente controlado. La alimentación consistió en microalgas y microcrustáceos. Las variables controladas fueron la temperatura, pH y oxígeno disuelto. Se obtuvo un porcentaje de fecundación artificial un 92% de ovas fecundadas, 96% de larvas como de alevinos, donde la ali...

El estudio se llevó a cabo con el objetivo de evaluar el efecto de las dietas formuladas con ensilado de residuos industriales pesqueros en la producción de trucha arcoíris (Oncorhynchus mykiss). Se planteó la hipótesis de que el ensilado, elaborado mediante la fermentación de residuos industriales pesqueros utilizando bacterias lácticas, melaza, azúcar y sorbato de potasio, podría sustituir parcialmente la harina de pescado en las dietas de trucha sin afectar negativamente los parámetros productivos. Para la investigación, se seleccionaron truchas en la etapa de engorde y se diseñó un experimento con tres dietas diferentes: una dieta test con 0 % de ensilado y dos dietas experimentales con 20 % y 30 % de ensilado, respectivamente. Durante un período de 72 días, se monitorearon parámetros como ganancia de peso, conversión alimenticia y mortalidad. Los resultados mo...

  The larval stage is a complex phase in aquaculture and living organisms are needed for the survival and development of the fish. The aim of the study was to describe the length of live-feeding suche (Trichomycterus rivalatus Valenciennes, 1846) in Lake Titicaca, Peru. The study was carried out in the prototype culture laboratory of the Fundación Titicaca Perú (FUNTI-PERU), Centro Poblado de Ichu, Puno. 900 pre-larvae of T. rivulatus were used as biological material, distributed in three experimental treatments with three replicates of 100 individuals each. The pre-larvae were obtained after 24 hours post-hatching that belonged to the same spawning. Temperature, dissolved oxygen and pH were measured as physical-chemical parameters of water quality. Survival was evaluated before the consumption of the yolk sac, nauplii of Artemia salina and cladocerans. Total length was measured o...