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    Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12348/2722

    Food consumption/biomass ratios of the pelagic fish community of Lake Malawi/Niassa

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    Abstract
    • An empirical model relating food requirements to morphometric indices of metabolic rate was used to calculate consumption/biomass ratios (Q/B) for 16 species of fish that make the pelagic fish community in Lake Malawi/Niassa. The Q/B/year varied from 3.31 to 9.82, with the large catfish (Dinotopterus nyasensis) having the lowest and a small cyprinid (Engraulicypris sardella) having the highest Q/B ratio. Direct estimates of Q/B for four of the most abundant species, based on analysis of diel feeding patterns, ranged from 4.20 to 24.70; the extreme values in this range representing replicate studies on the same species, the predatory cichlid Rhamphochromis longiceps. Previous studies that indicated exceptionally low Q/B ratios (1.0) in pelagic cichlids from Lake Malawi are not supported by this more recent work.
    Collections
    • Sustainable aquaculture [1840]
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    • na_2123.pdf (722.7Kb)
    Date
    • 1996
    Author
    • Ngatunga, B.P.
    • Allison, E.H.
    Type
    • Journal Article
    Publisher
    • ICLARM
    Metadata
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