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

Loka, Jayasree and Philipose, K K and Sonali, S M (2016) Effect of microalgal diets on filtration and ingestion rates of the rotifer Brachionus plicatilis. Indian Journal of Fisheries, 61 (3). pp. 76-80.

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    Abstract

    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 (12.2x10-5cells ml-1 ind-1 min-1) and ingestion (5.4x10-3 cells ml-1 ind-1 min-1) rates during the first 60 min.

    Item Type: Article
    Uncontrolled Keywords: Brachionus plicatilis, Feeding behaviour, Filtration rate, Ingestion rate, Microalgae, Rotifer
    Subjects: Food and Feeding
    Invertebrata > Rotifer
    Aquaculture
    Aquaculture > Aquafeed
    Divisions: CMFRI-Karwar
    Depositing User: Arun Surendran
    Date Deposited: 22 Oct 2016 10:37
    Last Modified: 02 Jan 2017 08:45
    URI: http://eprints.cmfri.org.in/id/eprint/11218

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