Growth, filtration and ingestion rate of the rotifer Brachionus plicatilis
 fed with large (Asteromonas gracilis
) and small (Chlorella
 sp.) celled algal species

Hotos, George N.

doi:10.1046/j.1365-2109.2003.00868.x

Cited by 27 publications

(32 citation statements)

References 32 publications

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“…Yufera and Pascual (1985) recorded maximum filtration rates of B. plicatilis of 1-2x10 -4 cells ml -1 ind -1 min -1 for the smallest cells and 0.8-1x10 -5 cells ml -1 ind -1 min -1 for the largest. Variations in the filtration and ingestion rates of rotifers observed could be attributed to the physiological differences in the organisms fed with different sizes of microalgal diets as well as gut passage time and speed of ingestion (Hotos, 2003). Pourriot (1977) observed decreased filtration rate in rotifers with increase in cell concentration.…”

Section: Discussionmentioning

confidence: 95%

“…But filtration rates for rotifer fed with Nanno+Iso, were high at concentrations of 2x10 6 cells ml -1 , 8x10 6 cells ml -1 and 12x10 6 cells ml -1 and the rates declined at cell concentrations of 22x10 6 cells ml -1 and 32x10 6 cells ml -1 . Hotos (2003) reported an abrupt drop in filtration and ingestion rates with increase in cell density of Chlorella sp.…”

Section: Discussionmentioning

confidence: 99%

“…Several reports are available on the efficacy of different microalgae as feed for rotifer culture (Gopakumar, 1998;Hotos, 2002;Okauchi, 2004;Chew and Lim, 2005;Kostopoulou and Vadstein, 2007;Molly Varghese and Krishnan, 2010;Campana-Torres et al, 2012). Few reports are also there on filtration and ingestion rates of rotifers (Schlosser and Anger, 1982;Yufera and Pascual, 1985;Navarro, 1999;Hotos, 2003;Sevgi and Zekiye, 2006) and the studies state that the stocking density significantly impacts the filtration and ingestion rates of rotifers fed with different microalgal diets. Studies on the influence of different microalgal diets in different combinations on filtration and ingestion rates are meagre in India.…”

Section: Introductionmentioning

confidence: 99%

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Effect of microalgal diets on filtration and ingestion rates of the rotifer Brachionus plicatilis

Loka

Philipose²,

Sonali³

2016

Indian J. Fish.

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Effect of marine microalgal diet on filtration and ingestion rates of Brachionus plicatilis was studied. Marine microalgae viz., Nannochloropsis oculata, Isochrysis galbana, Chaetoceros calcitrans and a combination of N. oculata and I. galbana (Nanno+Iso) at different cell concentrations were selected for the experiment and triplicates were maintained for each feed. Significant difference (p<0.05) was observed in the filtration and ingestion rates of B. plicatilis, between the treatments. Peak filtration rate of 12.2x10-5 cells ml -1 ind -1 min -1 was recorded in B. plicatilis fed with Nanno+Iso, followed by I. galbana. Ingestion rate was found to be significantly high (p<0.05) for those fed with C. calcitrans, followed by Nanno+Iso. Filtration rate was significantly high (p<0.05) in rotifers stocked at an initial density of 50 nos. ml -1 fed with Nanno+Iso. The results indicated that a combination of Nanno and Iso is the best suitable microalgal diet for rotifer with peak filtration (12.2x10 -5 cells ml -1 ind -1 min -1 ) and ingestion (5.4x10 -3 cells ml -1 ind -1 min -1 ) rates during the first 60 min.

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of microalgal diets on filtration and ingestion rates of the rotifer Brachionus plicatilis

Loka

Philipose²,

Sonali³

2016

Indian J. Fish.

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“…Diversos autores já demonstraram experimentalmente que, acima de uma concentração limite, denominada concentração limiar ou "incipient limiting level" (Rigler, 1961), a taxa de filtração é uma função negativa da concentração de alimento (Mullin, 1963;Richman, 1966;Hotos, 2003). Assim, Porter et al (1982) encontraram uma concentração incipiente limitante de 0,2 mg C L -1…”

Section: Discussionunclassified

TAXAS DE FILTRAÇÃO E INGESTÃO DE UMA MICROALGA POR Philodina roseola (Rotifera: Bdelloidea)

Moreira

Mansano

2016

Acta biol. Colomb.

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RESUMORotíferos possuem um importante papel nos ciclos biogeoquímicos e na produtividade orgânica dos ecossistemas de água doce em decorrência de suas elevadas taxas metabólicas. Informações sobre a filtração, seu principal processo de aquisição de energia, são relevantes e ainda escassos para a região tropical. Os rotíferos da Subclasse Bdelloidea alimentam-se por filtração ou raspagem consumindo pequenos itens alimentares, como bactérias, algas, leveduras ou matéria orgânica particulada. Sabemos pouco sobre o papel que desempenham na dinâmica trófica dos habitats que ocupam e por isso o objetivo deste estudo foi quantificar em laboratório as taxas de filtração e ingestão do rotífero Philodina roseola, alimentado com Raphidocelis subcapitata. O delineamento experimental consistiu na exposição de 10 rotíferos adultos por tratamento, em cinco concentrações que variaram entre 10 4 e 10 7 cels mL -1, mantidos sob temperatura de 25 ± 1 °C. Os experimentos tiveram a duração de 1 hora e as concentrações iniciais e finais da suspensão algal foram quantificadas por contagem numérica das células em câmara de Neubauer. Não foram encontradas diferenças significativas entre as concentrações iniciais e finais de células nos controles indicando não ter ocorrido crescimento algal. As taxas de filtração de P. roseola variaram entre 0,09 e 0,25 mL ind -1 h -1. Tendo em vista que a filtração é o principal processo de aquisição de energia de Philodina roseola, assim como dos demais rotíferos, e que está relacionada a questões importantes da dinâmica trófica dos ecossistemas aquáticos, informações adicionais são desejáveis mas necessitam, no entanto, ser ampliadas para outros tipos de alimento e para diferentes combinações de condições experimentais.Palavras-Chave: filtração, interações tróficas, Raphidocelis subcapitata, rotífero, taxas de alimentação. ABSTRACTRotifers play an important role in biogeochemical cycles and organic productivity of freshwater ecosystems due to their high metabolic rates. Information on filter feeding, their main process of energy acquisition, are relevant and still scarce for tropical regions. The rotifers of the class Bdelloidea feed by filtration or scraping consuming small food items, such as bacteria, algae, yeasts or particulate organic matter. We know little of their role in the trophic dynamics in the habitats they occupy and so the aim of this study was to quantify laboratory filtration and ingestion rates of the rotifer Philodina roseola, fed with Raphidocelis subcapitata. The experiment consisted of 10 adult exposure treatment at five concentrations approximately in the range between 10 4 and 10 7 cells mL -1 , at the temperature of 25 ± 1 °C. The experiments lasted one hour and initial and final concentrations of the algal suspensions were determined by counting the number of cells in a Neubauer chamber. There were no significant differences between the initial and final concentrations of cells in the control group indicating that algal growth did not occur. Philodina roseola filtration rate...

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“…Many studies were carried out on the mass culture of rotifers with different microalgal diets and at different temperatures and salinity conditions (Fielder et al, 2000;Hotos, 2002Hotos, , 2003Savas and Guclu, 2006;Kostopoulou and Vadstein, 2007;Jabeur et al, 2013;Abou-Shanab et al, 2016) in the rotifer tanks. Several researchers reported variations in rotifer density due to Vibrio infections which is a major constraint for high density production of rotifers (Skjermo and Vadstein, 1993;Verdonck et al, 1994Verdonck et al, , 1997Gomez-Gil et al, 2000;Rombaut et al, 2001;Prol-Garcia et al, 2010, Jayasree et al, 2016.…”

mentioning

confidence: 99%

Use of commercial probiotics for the improvement of water quality and rotifer density in outdoor mass culture tanks

Loka

Sonali²,

Saha³

et al. 2016

Indian J. Fish.

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An experimental study was carried out to evaluate the efficacy of three commercially available probiotics P1, P2 and P3 consisting of mainly Bacillus spp. and nitrifying bacteria against Vibrio loads in mass culture tanks of the rotifer Brachionus plicatilis. Triplicate tanks were maintained for each of the probiotic treatment as well as for control group. All the tanks were inoculated with 50 rotifers ml -1 and were fed with Nannochloropsis oculata at a density of 1 x 10 7 cells ml -1 . Every alternate day, all the experimental tanks were treated with probiotics at a concentration of 1 x 10 4 cfu ml -1 and the experiment was carried out for one week. The study showed a significant increase in rotifer density (p<0.05) in all the tanks treated with the probiotics and a maximum density of 400 nos. ml -1 was observed in the tanks treated with P3. After 5 th and 6 th day of culture, total elimination of Vibrios was also recorded in the tanks treated with P3 and P2 respectively. The study revealed that P3, with a combination of Bacillus, Thiobacillus, Acetobacter and Paracoccus supplemented with enzymes, was found to be most effective in the enhancement of rotifer density and also in the elimination of Vibrios in rotifer mass culture tanks.

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Growth, filtration and ingestion rate of the rotifer Brachionus plicatilis fed with large (Asteromonas gracilis ) and small (Chlorella sp.) celled algal species

Cited by 27 publications

References 32 publications

Effect of microalgal diets on filtration and ingestion rates of the rotifer Brachionus plicatilis

Effect of microalgal diets on filtration and ingestion rates of the rotifer Brachionus plicatilis

TAXAS DE FILTRAÇÃO E INGESTÃO DE UMA MICROALGA POR Philodina roseola (Rotifera: Bdelloidea)

Use of commercial probiotics for the improvement of water quality and rotifer density in outdoor mass culture tanks

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