Mass culture of the rotifer Brachionus plicatilis and its evaluation as a food for larval anchovies

Theilacker, Gail H.; McMaster, M. F.

doi:10.1007/bf00354834

Cited by 134 publications

(53 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, aside from this observation, seasonality was also a major influence on rotifer species structure in this zone, since most individuals were collected during the rainy season. However, B. plicatilis, a known brackish-tolerant species (Theilacker and McMaster, 1971;Epp and Winston, 1977;Thomaz et al, 2004;Fontaneto et al, 2006), accounted for 70% of the individuals found in this zone in both dry and Table 2. Results of stepwise multiple regression analyses for nine rotifer species and environmental predictors from an annual sampling effort at three estuarine zones at the Mossoró River Estuary.…”

Section: Discussionmentioning

confidence: 97%

Salinity and freshwater discharge determine rotifer distribution at the Mossoró River Estuary (Semiarid Region of Brazil)

et al. 2010

View full text Add to dashboard Cite

The present study aimed at evaluating differences in rotifer distribution in three estuarine zones in an inverse estuary located in the Semiarid Region of Brazil. Zones were chosen based on their proximity to the ocean and river border as a means of reflecting a horizontal salinity gradient. High freshwater discharge during the rainy season was the major determinant of rotifer composition. On the other hand, due to higher salinity values during the dry season, very low values of species richness and abundance were observed in all zones. Therefore, the study highlights the constraints of salinity and the positive influence of seasonality and river proximity on rotifer species in a semiarid estuarine environment.Keywords: rotifera, zooplankton, salinity, tropical inverse estuary, Semiarid Brazil. Salinidade e descarga de água doce determinam a distribuição de rotíferos no estuário do Rio Mossoró (região semiárida do Brasil)Resumo O presente estudo objetivou avaliar diferenças na distribuição de rotíferos em três zonas estuarinas em um estuário inverso localizado na região semiárida do Brasil. As zonas foram escolhidas com base em suas proximidades com o oceano e a margem do rio de forma a representar um gradiente de salinidade horizontal. A forte entrada de água doce durante o período chuvoso foi o maior determinante da composição de rotíferos. Do outro lado, devido aos maiores valores de salinidade durante o período seco, valores muito baixos de riqueza de espécies e abundância foram observados em todas as zonas. Dessa forma, o estudo demonstra as restrições da salinidade e a influência positiva da sazonalidade e da proximidade com o rio sobre as espécies de rotíferos em um ambiente estuarino do semiárido.Palavras-chave: rotífera, zooplâncton, salinidade, estuário inverso tropical, semiárido do Brasil.

show abstract

Section: Discussionmentioning

confidence: 97%

Salinity and freshwater discharge determine rotifer distribution at the Mossoró River Estuary (Semiarid Region of Brazil)

et al. 2010

View full text Add to dashboard Cite

show abstract

“…As in Houde's experiments, effects of initial stocking density on larval survival of B. pave were not well defined but existent, and optimum stocking density of 15 larvae per litre are in good agreement with the findings of other authors working with various marine fish species (Okamoto, 1969;Olesen & Minck, 1983;Lasker et. al., 1970;Theilacker & McMaster, 1971;Saksena & Houde, 1972}. In older larvae, the bottom stages of B. pavo might have developed some sort of territorial behaviour which might have caused casualties through biting; this is of particular interest while it would occur only in demersal fish species with pelagic larvae, since the relative stocking density of the larvae had gone up while the larvae were changing from the threedimensional space of the total water volume to a two-dimensional distribution in the bottom of the rearing jars.…”

Section: Larval Survivalmentioning

confidence: 99%

Observations on the reproductive and larval biology ofBlennius pavo (Pisces: Teleostei)

Westernhagen

1983

Helgolander Meeresunters

View full text Add to dashboard Cite

Social behaviour and spawning of adult Blennius pavo kept in the laboratory are described. Eggs are deposited in batches on the walls of artificial spawning places (PVC pipes). One male guards and tends the eggs of different females in one spawning place. Larval hatching occurs in groups according to oviposition. Minimum incubation temperature is around 14-15 °C. Larval survival in 1-1 rearing jars is not related to larval total length but to density of larval stock. An experimental population of laboratory reared juvenile and adolescent B. pavo displays a male to female ratio of 1:1.4. Factors possibly influencing the sex ratio of this littoral fish are discussed in view of the situation in its natural environment.

show abstract

“…Los resultados muestran que la composición proximal de los rotíferos estudiados se encontró en el intervalo descrito en la literatura. La variabilidad observada apoya la conclusión de que las proporciones de estos nutrientes cambian cuando los rotíferos son alimentados con diferentes especies de microalgas o dietas enriquecidas artificialmente (Sayegh et al, 2007); mientras que el contenido energético estuvo comprendido en el intervalo de 16 a 27 J mg -1 de biomasa seca, reportados por Theilacker & McMaster (1971) y Yúfera et al (1997.…”

Section: Discussionunclassified

“…Suantika et al (2003) mencionan que (r) es un buen indicador de la dinámica poblacional de rotíferos, así como para la evaluación de la producción de rotíferos en los sistemas de cultivo; incluso se utiliza para estimar el tiempo de duplicación de la población (Theilacker & McMaster, 1971). En este estudio, (r) fue sensible como un índice central para evaluar la conveniencia relativa de diferentes dietas experimentales, los valores promedio obtenidos fluctuaron entre 0,20 y 0,27, con las mayores tasas de crecimiento en los rotíferos alimentados con Nanno 3600 y RotiGrow.…”

Section: Discussionunclassified

“…En el presente estudio, los valores de (r) para la especie analizada se encontraron en el límite inferior del intervalo reportado en la literatura, pero la comparación es complicada debido a las diferentes condiciones experimentales en que fueron determinadas y a que algunos valores de (r) son reportados sólo en la fase de crecimiento exponencial. Algunos estudios comparables, fueron los realizados por Theilacker & McMaster (1971) . Yin & Zhao (2008) mencionan que la salinidad tiene un efecto notable sobre la tasa de crecimiento de los rotíferos, y que además el efecto es clon-específico.…”

Section: Discussionunclassified

See 1 more Smart Citation

Dinamica poblacional del rotifero Brachionus ibericus aislado de estanques para camaron, alimentado con diferentes dietas

Román‐Reyes¹,

Castañeda-Rodríguez²,

Castillo-Ureta³

et al. 2014

lajar

View full text Add to dashboard Cite

RESUMEN. La producción de microalgas vivas para cultivar rotíferos constituye uno de los mayores costos de operación en la larvicultura de peces, por lo que se están desarrollando sustitutos comerciales de microalgas para la alimentación y producción de rotíferos. Se desconoce el efecto que tienen las formulaciones comerciales sobre la dinámica poblacional de rotíferos nativos del noroeste de México y en este estudio se evaluó el efecto de cuatro dietas comerciales (Espirulina, RotiMac®, Nanno 3600®, RotiGrow-Plus®) y la microalga viva Nannochloropsis sp., sobre el crecimiento poblacional y fecundidad del rotífero Brachionus ibericus (GenBank KJ949043), aislado de una granja de camarón blanco (Litopenaeus vannamei). Se realizaron cinco réplicas por tratamiento alimenticio utilizando recipientes con volumen de 12 L de agua, con temperatura de 29 ± 1°C y salinidad de 35 ± 1, respectivamente. Los resultados mostraron que durante los periodos experimentales, las dietas probadas resultaron adecuadas para alimentar a B. ibericus, con tasas de crecimiento, tiempos de duplicación, densidades máximas y fecundidades que fluctuaron entre 0.20 a 0.27 rotíferos día , respectivamente. Las diferencias entre tratamientos fueron significativas (P < 0.05); los menores tiempos de duplicación y las mayores tasas de crecimiento, fecundidad y densidad poblacional fueron obtenidas con RotiGrow-Plus ® , pero el tiempo de duplicación y la tasa de crecimiento con RotiGrow-Plus ® no fueron significativamente diferentes (P > 0.05) a las obtenidas con Nanno 3600 ® .Palabras clave: Brachionus ibericus, Nannochloropsis, rotíferos, dinámica poblacional, dietas comerciales. Population dynamics of rotifer Brachionus ibericus isolated from shrimp ponds, fed with different dietsABSTRACT. The production of live microalgae to cultivate rotifers is one of the largest operating costs in fish hatcheries. Commercial substitutes of microalgae are being developed to feed and produce rotifers. The effect of commercial formulations on the population dynamics of native rotifers of northwestern Mexico is unknown, so in this study the effect of four commercial diets (Spirulina, RotiMac®, Nanno 3600®, RotiGrow-Plus®) was evaluated as well as the live macroalgae Nannochloropsis sp., on the population growth and fecundity of the rotifer Brachionus ibericus (GenBank KJ949043), isolated from a white shrimp farm (Litopenaeus vannamei). Five replicates per dietary treatment were performed using 12 L containers with temperature of 29 ± 1°C and salinity of 35 ± 1 respectively. The results showed that during the experimental period, the diets tested were suitable to feed B. ibericus, with mean growth rates, duplication times, maximum densities and fecundities that ranged from 0.20 to 0.27 rotifers day-1, 2.60 to 3.42 days, 0.16 to 0.39 eggs per female and 215.4 to 357.0 rotifers mL -1 , respectively. Differences between treatments were significant (P < 0.05); lower doubling times and higher growth rates, fecundities and population densities were obtained with RotiGrow-P...

show abstract

Mass culture of the rotifer Brachionus plicatilis and its evaluation as a food for larval anchovies

Cited by 134 publications

References 6 publications

Salinity and freshwater discharge determine rotifer distribution at the Mossoró River Estuary (Semiarid Region of Brazil)

Salinity and freshwater discharge determine rotifer distribution at the Mossoró River Estuary (Semiarid Region of Brazil)

Observations on the reproductive and larval biology ofBlennius pavo (Pisces: Teleostei)

Dinamica poblacional del rotifero Brachionus ibericus aislado de estanques para camaron, alimentado con diferentes dietas

Contact Info

Product

Resources

About