RENDIMIENTO POBLACIONAL DEL ROTÍFERO NATIVO Brachionus sp. “Cayman”, UTILIZANDO DIFERENTES ENRIQUECEDORES

Abstract

ResumenLos rotíferos Brachionus spp. son cultivados y utilizados como alimento vivo para larvas de peces y crustáceos en todo el mundo. Con el objetivo de evaluar el rendimiento poblacional del rotífero nativo Brachionus sp."Cayman", cepa Chilca, Perú, se realizó una prueba de enriquecimiento largo, utilizando cuatro enriquecedores/suplementos alimenticios comerciales, Marol-E, Protein Hufa, Selcon e Easy Super Selco, así como la microalga Nannochloropsis oculata sin suplemento, como control. Cada tratamiento se realizó por triplicado en tanques de 180 litros. Se determinó la fecundidad (F), tasa de crecimiento poblacional (TC) y productividad (R) obtenida con cada tratamiento. El ANOVA mostró diferencias estadísticas entre los tratamientos, el enriquecedor Protein Hufa presento mejores resultados en cuanto a F (0.65±0.03 huevos.indiv AbstractThe rotifer Brachionus spp. is the most important live food for fish and crustacean cultures throughout the world. In order to improve the growth performance of native Brachionus sp."Cayman," Chilca strain, Perú, we performed an experimental study of long-term enrichment with four commercial supplements, Marol-E, Protein Hufa, Selcon, Easy Super Selco and the microalgae Nannochloropsis oculata as control. The experiment was carried out in 180 liter tanks with three replicates per treatment. We determined the egg ratio (F), population growth rate (TC) and productivity (R). ANOVA showed significant differences among treatments, Protein Hufa supplementation showed better results in terms of egg ratio (0.65±0.03 eggs.ind -1 ), final density (149±0.58 indiv.mL -1 ), population growth rate (0.38±0.02 día -1 ) and productivity (29250±0.66 rot.L -1 . day -1 ) .

Technical and economic feasibility of adding pure oxygen for rotifer production (Brachionus plicatilis) spotted snapper (Lutjanus guttatus) larvae feeding

“…The doubling times of both systems match the reported (2 to 3.3 day -1 ) range by Vallejo et al, (1993) in his study of B. plicatilis. Population yields of both crops are considered high compared to that reported by Abu-Rezq and James (2005) of 12.130+1,89 rot • l -1 • day -1 and that of Cisneros (2011) ranging from 1.330+0,33 a 13.580+0,02 rot • l -1 • day -1 . The yields of rotifers improve the more HUFA's and proteins their feeds contain Cisneros, 2011), adding to the success of using microalgae on such cultures (Suantika et al, 2003, Aragão et al, 2004, Benetti et al, 2008, Ferreira et al, 2008.…”

“…According to Alvarez-Lajonchere and Álvarez et.al, (2013) results in rotifer cultures depend on the correct technology developed in the laboratory. Additionally, high temperatures (Yin and Zhao, 2008) and proper nutrition (Dhert et al, 2002;Cabrera, 2008;Cisneros, 2011;. Rojo-Cebrero et al, 2012) allowed the control culture to achieve similar densities (ANOVA p> 0.05) that that of the oxygen added culture.…”

Evaluación del efecto de Bacillus firmus C101 en el crecimiento de poslarvas de Litopenaeus vannamei Boone (camarón blanco) y Brachionus plicatilis s.s. Müller (rotífero)

“…-1 ) = (# Huevos/# Hembras) y Productividad (R) (indiv. mL -1 * día) = (Nt-No/t * 100); en donde Nt es la densidad de rotíferos en el tiempo t, No es la densidad inicial y t es el tiempo de suministro en el cultivo (Cisneros, 2011(Cisneros, , 2012.…”

“…-1 ) = (# Eggs/# Females) and Productivity (R) (indiv. ML -1 * day) = (Nt -No/t * 100); where Nt is the density of rotifers at time t, No is the initial density and t is the supply time in the crop (Cisneros, 2011(Cisneros, , 2012.…”

Integrative Taxonomy of Two Peruvian Strains of Brachionus plicatilis Complex with Potential in Aquaculture

“…are scarce. Species records, ecological and morphological descriptions [6,7], as well as applied aspects [8][9][10][11][12] have been reported. Although there are important efforts to begin formal descriptions and to provide useful information for those wishing to experiment with multidisciplinary research with local strains, especially considering their high utility in the local aquaculture [13][14][15][16], the current taxonomic status of Peruvian strains of B. plicatilis is still unclear.…”